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OM-Power 4001A Fully Automatic HF Amplifier

Sun, 09/23/2018 - 14:17
OM-Power 4001A Fully Automatic HF Amplifier

New OM 4001A product will soon be available in the market, let’s wait

 

Our website will be updated soon with more details

(adsbygoogle = window.adsbygoogle || []).push({}); Review Custom Coax Cables for Your Station September 22, 2018 No comments

Custom Coax Cables “Mark, W8BBQ shows how easy it is to use the DX Engineering Custom Cable Builder. Just four easy steps! The builder lets you... Read more

Review Palstar LA-1K – 1 kW Solid-State LDMOS HF amplifier September 22, 2018 No comments

“Here’s a full review of the Palstar LA-1K, it’s a 1 kW dual LDMOS solid-state HF linear. It covers from 6 to 160 meters. The LA-1K as RF sensin... Read more

Retevis Ailunce HD1 GPS dual band 2m 70cm DMR [ Review and Teardown ] September 21, 2018 No comments

  Ailunce HD1 Dual Band DMR Amateur Digital Radio Almost all the operations can be done via radio keypad.  Dual Band DMR Radio,Analog and Digital Comb... Read more

VHF Chance to win a brand new Boxchip S700A ! September 19, 2018 No comments

Network-radios.com and Boxchip created this amazing campaign! The S700A is a hybrid android radio that allows 100% coverage: via 3G/4G/LTE/WiFi/VHF or... Read more

Introduction to APRS- the Automated Packet Reporting System September 17, 2018 No comments

“The Automated Packet Reporting Service is a digital real-time communications system to share tactical information and messages. The most common... Read more

Digital Mobile Radio Hotspots May Be Interfering with Satellite Uplinks, AMSAT Reports September 05, 2018 No comments

This week, AMSAT News Service (ANS) cited an August 27 report from AMSAT Vice President-Operations Drew Glasbrenner, KO4MA, saying that a digital mobi... Read more

News ARRL Handbook 2019 September 21, 2018 No comments

ARRL Handbook 2019  Limited Edition! Six-Volume Ultimate Boxed Set For the first time, The ARRL Handbook has been divided into multiple volumes. All s... Read more

ARISS Radio Upgrade on ISS for student outreach September 20, 2018 No comments

AMSAT and ARISS are currently supporting a FundRazr campaign to raise $150,000 for critical radio infrastructure upgrade on ISS to enable students to... Read more

Celebrating 25 Years of QRZ.com – Ham Nation 368 September 20, 2018 No comments

Ham Radio call sign lookup Fred Lloyd AA7BQ and QRZ.com’s big 25th birthday celebration! Fred Lloyd AA7BQ talks with Bob Heil about QRZ.com... Read more

Digital Modes FT8 Roundup contest to test WSJT-X (v2) September 21, 2018 No comments

Photo:EA2CCG “A one-hour “practice contest” will be held next week using the FT8 mode  and the ARRL RTTY Roundup rules. Thursday, 27... Read more

WSJT-X 2.0 – New 77-bit messages information update September 18, 2018 No comments

“Hi all, Many of us have made many QSOs using the new 77-bit messages on 7.078 and 14.078 MHz. Overall the results have been good — but no... Read more

WSJT-X Version 2.0.0-rc1 Released – Download FT8 September 17, 2018 No comments

Go to New Features in WSJT-X 2.0 for a detailed description of its new features.  Further technical information (primarily of interest to programmers)... Read more

Contesting CQ WW RTTY DX Contest September 23, 2018 No comments

CQ WW RTTY Held each year on the last full weekend of September, the contest draws over 15,000 participants and over 3300 log submittals from around t... Read more

FT8 Roundup contest to test WSJT-X (v2) September 21, 2018 No comments

Photo:EA2CCG “A one-hour “practice contest” will be held next week using the FT8 mode  and the ARRL RTTY Roundup rules. Thursday, 27... Read more

LY7Z op. Rokas 5 years old – All Asia 2018 Contest September 02, 2018 No comments

!Five nine zero five” Rokas first time operate contest. All Asia SSB contest. Single op. All bands. 7 hours total time ON. 4 hours Saturday and... Read more

CQ WW RTTY DX Contest

Sat, 09/22/2018 - 21:05
CQ WW RTTY

Held each year on the last full weekend of September, the contest draws over 15,000 participants and over 3300 log submittals from around the world.

Rules Translations (pdf)

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Archive

Rules from previous years (adsbygoogle = window.adsbygoogle || []).push({}); The 2018 CQ World Wide RTTY DX Contest

September 29-30
Starts 0000 GMT Saturday — Ends 2400 GMT Sunday

I. OBJECTIVE: For amateurs around the world to contact as many other amateurs in as many CQ zones, countries, and W/VE QTHs as possible.

II. BANDS: Five bands only: 3.5, 7, 14, 21 and 28 MHz. Observance of established band plans is strongly encouraged.

III. CONTEST EXCHANGE: RST report plus CQ zone number of the station location (e.g., 599 14). Stations in the continental USA and Canada also send QTH (e.g., 599 05 MA). See IV.C.3. below.

IV. SCORING:

A. Score: The final score is the result of the total QSO points multiplied by the sum of zone, country and QTH multipliers. Example: 1000 QSO points * (30 Zones + 35 Countries + 35 W/VE QTHs) = 100,000 (final score).

B. QSO Points: Stations may be contacted once on each band. QSO points are based on the location of the station worked.

  1. Contacts between stations on different continents count three (3) points.
  2. Contacts between stations on the same continent but in different countries count two (2) points.
  3. Contacts between stations in the same country count one (1) point.

C. Multipliers: There are three types of multipliers.

  1. Zone: A multiplier of one (1) for each different CQ zone contacted on each band. The CQ Worked All Zones rules are the standard.
  2. Country: A multiplier of one (1) for each different country contacted on each band. The DXCC entity list, Worked All Europe (WAE) multiplier list plus IG9/IH9, and continental boundaries are standards for defining country multipliers. Maritime mobile stations count only for a zone multiplier.
  3. W/VE QTH: A multiplier of one (1) for each continental US state (48), The District of Columbia and each Canadian call area (14) contacted on each band. Please use only official U.S. Postal Service abbreviations to identify states (e.g., Michigan = MI, Massachusetts = MA, Ohio = OH, The District of Columbia = DC). Note:  Alaska (KL7) and Hawaii (KH6) are counted as country multipliers only and not as state multipliers. Canadian call areas (14 total) are as follows: NB (VE9), NS (VE1), QC (VE2), ON (VE3), MB (VE4), SK (VE5), AB (VE6), BC (VE7), NWT (VE8), NF (VO1), LB (VO2), NU (VY0), YT (VY1), PEI (VY2).

V. ENTRY CATEGORIES:

A. Single Operator Categories: One person (the operator) performs all operating and logging functions. There is no limit on operating time or band changes. Only one transmitted signal is permitted at any time.

1. Single Operator: QSO finding assistance of any kind is prohibited (see VIII.2).

a. High Power (All Band or Single Band): Total output power must not exceed 1500 watts.

b. Low Power (All Band or Single Band): Total output power must not exceed 100 watts.

c. QRP (All Band or Single Band): Total output power must not exceed 5 watts.

2. Single Operator Assisted: Entrants in this category may use QSO finding assistance (see VIII.2).

a. High Power Assisted (All Band or Single Band): Total output power must not exceed 1500 watts.

b. Low Power Assisted (All Band or Single Band): Total output power must not exceed 100 watts.

c. QRP Assisted (All Band or Single Band): Total output power must not exceed 5 watts.

B. Single Operator Overlay Categories: Any Single Operator entrant that meets the requirements may ALSO enter one of the categories shown below by adding the appropriate CATEGORY-OVERLAY line in the Cabrillo log file header. Overlay category entries will be listed separately in the results; scored as All Bands; and grouped by High Power and Low Power (includes QRP).

1. Classic Operator (CLASSIC): The entrant will use only one radio, no QSO finding assistance, and may operate up to 24 of the 48 hours — off times are a minimum of 60 minutes during which no QSO is logged. If the log shows more than 24 hours of operation, only the first 24 hours will be counted for the overlay score. The one radio must not be able to receive while transmitting. Single Operator Assisted entries are not eligible for this category.

2. Rookie (ROOKIE): The operator was first licensed as a radio amateur less than three (3) years before the date of the contest. Indicate the date first licensed in the SOAPBOX field.

C. Multi-Operator Categories (all-band operation only): Any number of operators is allowed. QSO finding assistance is allowed. Only one transmitted signal per band is permitted at any time. Only one transmitted signal per band is permitted at any time.

1. Single Transmitter (MULTI-ONE): Only one transmitted signal on one band permitted at any time (run signal). Exception: One—and only one—other transmitted signal (multiplier signal) may be used, if—and only if—, it is on a different band than the run transmitted signal and the station worked is a new multiplier. The run and multiplier transmitted signals may each make a maximum of 8 band changes per clock hour (00 through 59 minutes). The log must indicate which transmitted signal (run or multiplier) made each QSO. The multiplier transmitted signal may not call CQ (solicit contacts).

a. High Power: Total output power must not exceed 1500 watts on any band at any time.

b. Low Power: Total output power must not exceed 100 watts on any band at any time.

2. Two Transmitters (MULTI-TWO): A maximum of two transmitted signals on two different bands may be used at any time. The log must indicate which transmitted signal made each QSO. Each transmitted signal may make a maximum of 8 band changes in any clock hour (00 through 59 minutes). Total output power must not exceed 1500 watts on any band at any time.

3. Multi-Transmitter (MULTI-UNLIMITED): The five contest bands may be activated simultaneously. Only one transmitted signal per band is permitted at any time. Total output power must not exceed 1500 watts on any band at any time.

D. Checklog: Entry submitted to assist with the log checking. The entry will not have a score in the results and the log will not be made public.

VI. AWARDS: A single-band log will be eligible for a single-band award only. A log containing more than one band will be judged as an all-band entry unless specified as a single-band entry. A Single Operator station must operate a minimum of 4 hours be eligible for an award. Multi-operator stations must operate a minimum of 8 hours to be eligible for an award.

A. Certificates: Electronic certificates will be made available for download for everyone that submits an entry.

B. Plaques: Plaques and trophies are awarded for top performance in a number of categories. View the current list of plaques and sponsors at www.cqwwrtty.com/plaques.htm. Only one plaque will be awarded per entry. A station winning a plaque will not be considered for a sub-area award; the plaque will be awarded to the runner-up in that area.

VII. CLUB COMPETITION: The club score is the total aggregate score from logs submitted by members. There are two separate club competition categories.

A. USA Clubs: Participation is limited to club members residing  within a 250 mile radius circle from the center of club area.

B. DX Clubs: Participation is limited to club members residing within EITHER the DXCC entity where the club is located OR within a 400 km radius circle from the center of club area (except for expeditions organized specifically for the contest conducted by members who reside within the club area).

C. General club rules:

  1. National organizations (e.g., JARL, REF or DARC) are not eligible for the club competition.
  2. Single-operator entries may only contribute to one club. Multi-operator scores may be allocated to multiple clubs as a percentage of the number of club members participating in the operation. The log entry must spell out the full club name (and club allocations if multi-op).
  3. A minimum of four logs must be received for a club to be listed in the results. Checklog entries are not counted for the club score.
  4. The word “reside” shall be defined as: To dwell permanently or continuously or to occupy a place as a person’s fixed, permanent and principal home for legal purposes.

VIII. DEFINITIONS OF TERMS:

1. Station location: The area in which all the transmitters, receivers and antennas are located. All transmitters and receivers must be within a single 500-meter diameter circle. Antennas must be physically connected by RF transmission lines to the transmitters and receivers.

2. QSO finding assistance: The use of any technology or other source that provides call sign or multiplier identification of a signal to the operator, other than a single-channel RTTY decoder. This includes, but is not limited to, use of a wide-band multi-channel RTTY decoder, DX cluster, DX spotting web sites (e.g., DX Summit), local or remote call sign and frequency decoding technology (e.g., RTTY Skimmer or Reverse Beacon Network), or operating arrangements involving other individuals.

IX. GENERAL RULES FOR ALL ENTRANTS:

1. Entrants must operate within the limits of their chosen category when performing any activity that could impact their submitted score.

2. A different call sign must be used for each entry. Only the entrant’s call sign may be used to aid the entrant’s score.

3. Do not exceed the total output power limitation of the chosen entry category on any band.

4. Self-spotting or asking to be spotted is not permitted.

5. Remote operation is permitted if the physical location of all transmitters, receivers, and antennas are at the station location. A remotely operated station must obey all station license, operator license, and category limitations. The call sign used must be one issued or permitted by the Regulatory Authority of the station location.

6. Remote receivers outside the station location are not permitted.

7. Only one signal on a band is allowed at any time. When two or more transmitters are present on the same band, a hardware device MUST be used to prevent more than one signal at any one time. Alternating CQs on two or more frequencies on a band is not allowed.

8. All requests for contacts, responses to calls, and copying of call signs and contest exchanges must be accomplished during the contest period using the mode and frequencies of the contest.

9. Correction of logged call signs and exchanges after the contest, by use of any database, recordings, email or other methods is not allowed.

10. Call signs logged must be the same as those exchanged over the air by the entrants during the QSO.

11. Only 45.45 Baud. 170 Hz shift ITA2 mode is permitted,

X. LOG INSTRUCTIONS: Electronic submission of logs is required for all entrants who use a computer to log the contest or prepare contest logs.

1. The log MUST show the following for each contact: correct date and time in UTC, frequency (or band), call sign of the station worked, exchange sent, and exchange received. A log without all required information may be reclassified to Checklog. Contacts should be logged at the time they are completed. Stations competing for World and Continent awards must provide accurate frequencies for all contacts in the log.

2. Single band entrants are required to include all contacts made during the contest period, even if on other bands. Only contacts made on the band specified in the Cabrillo header or summary sheet will be considered for scoring purposes. Logs with contacts only on one band will be classified as single band entries.

3. The CABRILLO file format is the standard for logs. See www.cqwwrtty.com/logs.htm for detailed instructions on filling out the CABRILLO file header. Failure to fill out the header correctly may result in the entry being placed in the wrong category or reclassified as a Checklog. Note: USA and Canada stations must indicate the operating location in the CABRILLO header (e.g., LOCATION: OH); other stations indicate ‘DX’ (e.g., LOCATION: DX).

4. Web upload is the preferred method of log submission. Web upload is available atwww.cqwwrtty.com/logcheck/. Email submission is also available. Send to rtty@cqww.com in CABRILLO format. Include only the entry call sign in the “Subject:” line of the email.

5. Instructions for NON-CABRILLO electronic logs: If you are not able to submit a CABRILLO format log, please contact the Contest Director for assistance with submitting another format.

6. Instructions for paper logs: Paper logs may be mailed to CQ WW RTTY DX Contest, P.O. Box 1877, Los Gatos, CA 95031-1877, USA. Each paper log entry must be accompanied by a Summary Sheet listing all scoring information, the category of competition, and the entrant’s name and mailing address in BLOCK LETTERS.

7. Entry Confirmation: All logs received will be confirmed via email. A listing of logs received can be found atwww.cqwwrtty.com/logs_received.htm.

8. Log withdrawal: An entrant may withdraw the submitted log for any reason with 30 days of the log deadline. Contact the Contest Director for instructions.

XI. LOG DEADLINE:

1. All entries must be sent WITHIN FIVE (5) DAYS after the end of the contest: no later than 2359 UTC October 5, 2018. Resubmitting an entry after the deadline will result in it being considered as a late log.

2. An extension may be requested by email to questions@cqwwrtty.com. The request must state a legitimate reason and must be received before the log deadline. Extensions are granted only upon confirmation by the Contest Director.

3. Logs submitted or postmarked after the deadline may be listed in the results, but will not be eligible for awards.

XII. JUDGING: The CQ WW RTTY DX Contest Committee is responsible for checking and adjudicating the contest entries. Entrants are expected to follow the rules and good amateur radio practices. Violation of the rules of the contest or unsportsmanlike conduct may lead to disciplinary action by the Committee.

A. Unsportsmanlike Conduct: Examples of unsportsmanlike conduct include, but are not limited to:

1. Arranging or confirming any contacts during or after the contest by use of ANY non-amateur radio means such as telephones, Internet, instant messaging, chat rooms, VoIP, email, social media or web sites

2. Transmissions by the entrant on frequencies outside of license limitations.

3. Changing times in the log to meet band change or off time rules.

4. Taking credit for excessive unverifiable QSOs or unverifiable multipliers.

5. Signals with excessive bandwidth (e.g., splatter, clicks) or harmonics on other bands.

6. Running stations not identifying in a timely manner (i.e., 1 minute).

B. Observer Program: The Committee request of any entrant to accept a visit by an observer during the contest. Failure to allow a Committee appointed observer full access to the station during the contest period may result in the entry being a Checklog.

C. Disciplinary Actions: In the event of a violation, the entrant is subject to disqualification at the discretion of the Committee.

1. Disqualified entries will be listed at the end of the published results and is not eligible for an award.

2. Notification of Committee actions will be by email to the address provided with the log submission. The entrant has five days to appeal the decision to the Contest Director. After that time the decision is final.

3. The Committee reserves the right to change the category of any entry based on its examination of the log or other information.

D. Log Checking: All logs are checked using custom software and human judgment.

1. Duplicate contacts are removed with no additional penalty.

2. Contacts with an incorrect received exchange are removed with no additional penalty.

3. Call sign errors (bust) or call signs not found in the other log (NIL) are removed and receive a penalty of two times the QSO point value for that contact.

4. Contacts that do not meet the band change rules for multi-operator entries are removed with no additional penalty.

XIII. DECLARATION: By submitting a CQ WW RTTY DX Contest log, and in consideration of the efforts of the CQ WW RTTY DX Contest Committee to review and evaluate that log, an entrant unconditionally and irrevocably agrees that he/she has: 1) read and understood the rules of the contest and agree to be bound by them, 2) operated according to all rules and regulations that pertain to amateur radio for the station location, 3) agreed the log entry may be made open to the public, and 4) accepted that the issuing of disqualifications and other decisions of the Committee are official and final. If an entrant is unwilling or unable to agree to all of the foregoing, the entrant should not submit the entry or submit the entry as a Checklog only.

Questions pertaining to the CQ WW RTTY DX Contest rules may be submitted by email to questions@cqwwrtty.com. Answers for many frequently asked questions can be found at www.cqwwrtty.com.

 

Custom Coax Cables for Your Station

Sat, 09/22/2018 - 10:07
Custom Coax Cables

“Mark, W8BBQ shows how easy it is to use the DX Engineering Custom Cable Builder. Just four easy steps!
The builder lets you select the precise cable type, length and connectors you want on each end. Mix-and-matching connectors is OK too! Also use the tool to create copper braid assemblies for your specialized grounding applications.
RG400 Custom Cable assemblies are being added soon!

Each custom Qcoax cable is hi-pot tested by our technical staff before it leaves our facility.

Find the Custom Cable Builder on the DXEngineering.com home page or click here! “

Software New Beta Version WSJT-X 2.0 ! September 20, 2018 No comments

WSJT-X  V2 As promised, the WSJT-X Development Group has announced a new “candidate release,” WSJT-X 2.0 rc1. This beta version of the popular digital... Read more

FT8, WSJT-X, & HamRadioDeluxe,video demo o latest v6.4.0.886 directly connected to log automatically in Logbook without JTAlert September 13, 2018 No comments

Download WSJT  Download Ham Radio Deluxe Read more

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Dxing Baker Island DXpedition Wrap Up [ PODCAST ] September 21, 2018 No comments

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Award programme 100th Anniversary of Polish Independence September 18, 2018 No comments

Dear Amateur Radio Friends, On behalf of Mr Waldemar Sznajder, 3Z6AEF – President of the Polish Amateur Radio Union (PZK) and Mr Piotr Skrzypcza... Read more

VHF Chance to win a brand new Boxchip S700A ! September 19, 2018 No comments

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“The Automated Packet Reporting Service is a digital real-time communications system to share tactical information and messages. The most common... Read more

Antenna JK2040-Hawk – Yagi antenna of 5 elements for the 20 m band and 3 elements for the 40 m band on a 40 foot (12.19 m) boom September 21, 2018 No comments

The JK2040 Hawk has phenomenal performance characteristics on 20m and 40m. The 38ft boom 20m Yagi has been optimized for high gain and a good F/R with... Read more

KE4PT and W4RQ Win the September QST Cover Plaque Award September 11, 2018 No comments

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News ARRL Handbook 2019 September 21, 2018 No comments

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WSJT-X 2.0 – New 77-bit messages information update September 18, 2018 No comments

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Equipment OM-Power 4001A Fully Automatic HF Amplifier September 23, 2018 No comments

OM-Power 4001A Fully Automatic HF Amplifier New OM 4001A product will soon be available in the market, let’s wait   Our website will be upd... Read more

LA1K5 is a solid-state 1200 watts 1.8 – 54MHz power amplifier September 19, 2018 No comments

The RFpower LA1K5 is a solid-state 1200 watts 1.8 – 54MHz power amplifier. It uses a ruggedness 1800 watts 65 V LDMOS technology NXP’s MRF... Read more

Review Palstar LA-1K – 1 kW Solid-State LDMOS HF amplifier

Sat, 09/22/2018 - 08:41

“Here’s a full review of the Palstar LA-1K, it’s a 1 kW dual LDMOS solid-state HF linear. It covers from 6 to 160 meters. The LA-1K as RF sensing allowing automatic band switching without having to interface the radio. It has a very nice color display touch screen which includes a power meter and a live SWR meter. It supports up to 3 antennas. Despite a low IMD distortion of -35dB it supports “pure signal” (low distortion) with a dedicated RCA port to connect your SDR. You can update the firmware via the front USB port.”

Price: $3495.95 

VHF New ! BIG TAJFUN 1000 144 MHz – 1KW July 27, 2015 No comments

Description New robust Heatsinks – Fischer. Continuous 900W DIGI-modes. Quiet fans. TAJFUN 1000 is small, lightweight but robus LDMOS Power Ampl... Read more

Wouxun KG-UV8E – TRI-BAND May 24, 2016 No comments

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Baofeng DM-5R: Manuals and Software September 21, 2016 No comments

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Mirage Amplifier B-320-G VHF, HT/MOBLE AMP, 200W OUT, 144-148 MHZ November 30, 2014 No comments

Amplifier, HT, VHF, Solid State, 144-148 MHz, 3/50 W In, 200/200 W Out, UHF Fem, SO-239, 13.8 Vdc, 25 A, Each Add this amp to your 2 Meter HTor mobile... Read more

Amateur Radio Praised Following Participation in Washington Interoperability Exercise April 21, 2016 No comments

Amateur Radio came in for high praise following its role in a March 30 to April 3 Washington National Guard interoperability communication exercise, s... Read more

(adsbygoogle = window.adsbygoogle || []).push({}); Antenna New log periodic array from InnovAntennas with parasitic element enhancement December 08, 2017 No comments

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Emergency Antenna Platform System (E-APS) – WC2FD November 02, 2015 No comments

  A system to facilitate emergency radio communications from parking lots using lamp posts as antenna masts. Designed and built by the kids of th... Read more

Home Brew Lightning Disconnector [ Video ] November 19, 2016 No comments

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ARSCTL – a flexible web interface for your antenna rotators by DH1TW August 18, 2015 No comments

Arsctl is a server side application which makes all your antenna rotators available on a network. Arsctl allows you to conveniently control your rotat... Read more

App - Mobile RFinder – The World Wide Repeater Directory now free trial on Android! November 09, 2015 No comments

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New ARRL Repeater Directory Will Leverage Crowdsourcing Technology November 14, 2016 No comments

ARRL partner RFinder, the creator of a web and app-based directory of Amateur Radio repeaters worldwide, will supply all data for the 2017-2018 ARRL R... Read more

AmsatDroid FREE – APP October 05, 2015 No comments

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Morse code Ringtone Generator by M1RGZ December 11, 2014 No comments

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EchoLink for iOS version 2.10.18 is now available May 07, 2018 No comments

EchoLink for iOS version 2.10.18 is now available in the App Store. This is a 64-bit build that is fully compatible with iOS 10 and modern iOS devices... Read more

News ARRL Handbook 2019 September 21, 2018 No comments

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ARISS Radio Upgrade on ISS for student outreach September 20, 2018 No comments

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Radio City has been in business for 36 years, serving generations of loyalists and newcomers to the ham radio community. September 16, 2018 No comments

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ARRL Handbook 2019

Fri, 09/21/2018 - 17:56
ARRL Handbook 2019  Limited Edition! Six-Volume Ultimate Boxed Set For the first time, The ARRL Handbook has been divided into multiple volumes. All six volumes are included in a handsome, hard slipcase, for easy storage and access. Each volume is more manageable to read and browse. You Get All 6 Volumes… Volume 1: Introduction & Fundamental Theory
Volume 2: Practical Design & Principles PART 1
Volume 3: Practical Design & Principles PART 2
Volume 4: Antenna Systems & Radio Propagation
Volume 5: Equipment Construction & Station Accessories
Volume 6: Test Equipment, Troubleshooting, RFI & Index Radio Experimentation, Discovery, and Achievement. The ARRL Handbook for Radio Communications is a complete reference and guide to radio technology principles and practices. Since 1926, The ARRL Handbook has been a trustworthy source of introductory, applied, and theoretical information. Now in its 96th edition The Handbook continues to advance the pursuit of experimentation and innovation by radio amateurs and professionals. Each edition contains new and useful material to support Amateur Radio activity from the traditional short- and long-wave frequencies through microwaves! Key Topics
  • Radio electronics theory and principles
  • Circuit design and equipment
  • Radio signal transmission and propagation
  • Digital and analog modulation and protocols
  • Antennas and transmission lines
  • Construction practices

Who reads The Handbook?

Amateur Radio operators, or “hams;” professional wireless communication engineers and system designers; electrical engineers; students and instructors of engineering, physics, and geoscience. Always Updated! New Projects and Content
  • Simple SLA Float Charger project by John Boal, K9JEB
  • Amateur Radio Data Platforms by Paul Verhage, KD4STH and Bill Brown, WB8ELK
  • The latest information on WSJT-X digital modes by the WSJT team
  • Filter and circuit design software by Tonne Software and Jim Tonne, W4ENE
  • Low-Noise VHF and UHF Oscillators by Ulrich Rohde, N1UL, and Ajay Poddar, AC2KG
  • Update on Solar Cycle 24 by Carl Luetzelschwab, K9LA
  • Updated SSTV practices and technology by Larry Peterson, WA9TT
  • Designing dual-band loaded dipoles by David Birnbaum, K2LYV
  • Latest transceiver survey by Joel Hallas, W1ZR

Plus, new component tables, reference articles, material characteristics, and guidelines for SDR design.

Download Included: eBook and Supplemental Material  Download the fully searchable digital edition of the printed book, as well as expanded supplemental content, software, PC board templates, and other support files.

System Requirements: The digital edition and expanded content (PDF files) are compatible with Windows 7, 8, or 10; Windows Vista or Windows XP, as well as Macintosh systems, using Adobe Acrobat Reader software. Acrobat Reader is a free download at www.adobe.com. PDF files are Linux readable. Other included software is Windows compatible, only.

Also available The ARRL Handbook 2019 Softcover Edition

The ARRL Handbook 2019 eBook (Windows Version)

The ARRL Handbook 2019 eBook (Mac/Linux Version
Product Details Six-Volume Boxed Set: 1280 pages. Softcover Edition also available.

Publisher: The American Radio Relay League, Inc.; Ninety-Sixth Edition/First Printing (October 2018)
Language: English
ISBN: 978-1-62595-089-5

Shipping Weight: 6.0 pounds Equipment OM-Power 4001A Fully Automatic HF Amplifier September 23, 2018 No comments

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FT8 Roundup contest to test WSJT-X (v2)

Fri, 09/21/2018 - 13:52

Photo:EA2CCG

“A one-hour “practice contest” will be held next week using the FT8 mode 
and the ARRL RTTY Roundup rules.

Thursday, 27 September 0200-0259 UTC (Wednesday evening, NA time)

Dial frequencies 7.078 and 14.078, everyone works everyone.

To participate you must use WSJT-X 2.0. The Windows installation package 
is linked at the bottom of this web page:
https://physics.princeton.edu/pulsar/k1jt/wsjtx.html (Note that this is a temporary release candidate, not the final full release of WSJT-X 2.0.)

The Quick-Start Guide to WSJT-X 2.0 is here:
https://physics.princeton.edu/pulsar/k1jt/Quick_Start_WSJT-X_2.0.pdf

IMPORTANT:
1. On the *Settings | Advanced* tab, be sure to check the boxes *Always 
generate 77-bit messages*, *Decode only 77-bit messages*, and *ARRL RTTY 
Roundup*. In the field labeled “Exch” enter the 2- or 3-letter 
abbreviation for your state or province (US/Canadian stations) or DX if
you are not in the US or Canada.

2. Be sure that 7.078 and 14.078 appear in your selectable frequency
list when for FT8 mode. You might need to do a *Reset* on the *Settings 
| Frequencies* tab.

3. We do not recommend using a compound or nonstandard callsign in this 
event.

Post results and comments here so we can all learn from an actual FT8 
contest-like experience. Note that planning is underway for at least two
dedicated FT8 contests to be potentially held in the next few months. 
Next week’s practice run will help to inform those plans.

If you are not already subscribed, you may wish to join the email list 
wsjt-devel:
https://sourceforge.net/p/wsjt/mailman/?source=navbar
This list is the best way to communicate directly with the WSJT 
Development Group.

— 73, Joe, K1JT”

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JK2040-Hawk – Yagi antenna of 5 elements for the 20 m band and 3 elements for the 40 m band on a 40 foot (12.19 m) boom

Fri, 09/21/2018 - 12:21

The JK2040 Hawk has phenomenal performance characteristics on 20m and 40m. The 38ft boom 20m Yagi has been optimized for high gain and a good F/R with good SWR performance across the band. On 40m the characteristics of the 3 element Yagi are similar to the JK2040 Eagle. The 40m element constructions do not need trussing unless you live in snow/ice conditions. Itís truly an excellent performer and its max F/R characteristics help you hear even the weakest of signals.

Approx wt. = 238 lbs

Wind Area “C” = 16.20 Sq Ft

                “G” = 29.16 Sq Ft

Projected Area =  24.3  Sq Ft

Max Wind Speed = 100 Mph

Max Turning Radius = 29.85 Ft

20M 40M Number Elements 5 3 Active Boom Length 38 ft 33.8 ft Peak Gain* 7.98 dBd 5.26 dBd Peak F/B 34 dB 31 dB Peak F/R 23 dB 24 dB 2:1 SWR Bandwidth Less than 1.2:1 150 KHz 1.5:1 SWR Bandwidth Less than 1.2:1 across the band 110 KHz Max Element Length 36.6 ft 46.5 ft

Price : US$4,390.00

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Baker Island DXpedition Wrap Up [ PODCAST ]

Fri, 09/21/2018 - 10:55

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Be sure to CALL in with your questions and comments by calling 812-NET-HAM-1 live during the call-in segment of the show, or by Skype. Our username is hamtalklive. You can also tweet your questions before or during the show to @HamTalkLive.”

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Retevis Ailunce HD1 GPS dual band 2m 70cm DMR [ Review and Teardown ]

Fri, 09/21/2018 - 08:11
  Ailunce HD1 Dual Band DMR Amateur Digital Radio

Almost all the operations can be done via radio keypad. 
Dual Band DMR Radio,Analog and Digital Combined. 
Compatible with Motorola Tier 

No need PC to program your radio

Description:
HD1 dual band digital radio uses Digital Mobile Radio (DMR) Tier 2 Standard protocol. It is compatible with the popular MOTO TRBO series Tier I and II using standard encryption, as well as other makes and models of DMR supported radios. It is also compatible with any existing analog two-way radio operating on the supported UHF and VHF frequencies for easy migration to digital technology. And almost all the operations can be done via radio keypad.

 

Main Feature
Dual Band DMR Radio
Analog and Digital Combined 
Compatible with Motorola Tier Ⅰ&Ⅱ
Comply with Digital Protocol ETSI TS 102 361-1,-2,-3
Use Time-Division Multiple-Access(TDMA) Digital Function
Frequency Band:136-174 & 400-480MHz& 76-107.95MHz(Receive only )
100,000 Contacts + 1000 Priority Contacts
Up to 3000 channels 
Dual Time Slot for Repeater 
Dual Time Slot for Point to Point 
Firmware Upgradeable 
IP67 Waterproof
High/Medium/Low Power:10/5/1w
Scan:Time/Search/Carrier
Encryption Function  (Is not compatible with RT3,RT8,RT82.RT90)
Lone Worker 
Single/Group/All call 
Remote kill/stun/activate 
Color LCD Display 
Transmit/Transceive interruption 
Promiscuous Function
GPS 
CTCSS/DCS 
Analog Monitor 
VOX 
TOT 
Talkaround 
Squelch 
Keypad Lock 
LED Indicator 
Password Lock 
Battery Save
Voice Annunciation
1000/1450/1750/2100Hz Single tone
ID Setting

General specifications Frequency 136-174&400-480MHz
&76-107.95MHz(Receive only ) Channels 3000 Operating Temperature -30℃~+60℃ Operating Voltage 7.4V DC Dimension 150 x 64x 40mm Weight 360g(with battery) Battery Type Li-ion Battery Capacity 3200mAh Antenna Impedance 50Ω Transmitter Power UHF:8w:4w:1w
VHF:10w:5w:1w Transmit current Analog≤1.6A Digital≤0.9A Frequency Stability ±1.0ppm FM modulation mode 12.5KHz@11K0F3E 25KHz@16K0F3E 4FSK digital mode 12.5KHz(data only):7K60FXD
12.5KHz(data and voice):7K60FXW Modulation distortion <5% Vocoder AMBE+2TM Adjacent channel power 60dBm@12.5KHz 65dBm@25KHz Audio Response +1~-3dB Digital Protocol ETSI-TS102 361-1,-2,-3 Receiver Analog Sensitivity 0.35uV/-116dBm(20dB SINAD)
0.22uV/-120dBm(Type) Digital Sensitivity 0.30uV/-117dBm(BER 5%)
0.70uV/-110dBm(BER 1%) Adjacent Channel Selectivity TIA603C:65dB ETSI:60dB Spurious Response TIA603C:75dB ETSI:70dB Audio Response +1~-3dB Rated Audio Distortion ≤3%(Type) Audio Power ≥500mW

 

Package included:

  • 1 x HD1 two way radio
  • 1 x Battery
  • 1 x Antenna
  • 1 x Adapter
  • 1 x Charger
  • 1 x User’s manual
  • 1 x Belt clip
  • 1 x Sling

 

More Information Model HD1 Radio type Handheld Technological regimes DMR,Digital Frequency band UHF&VHF Frequency range 136-174&400-480MHz &76-107.95MHz(Receive only ) Memory Channel 3000CH RF Power 10W Operating Temperature -30℃~+60℃ Operating Voltage 7.4V DC Battery Li-ion 3200mAh Size 150 x 64x 40mm Antenna onnector No Antenna Impedance 50 ohm Accessory onnector No Features N/A Other parameters N/A

 

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ARISS Radio Upgrade on ISS for student outreach

Thu, 09/20/2018 - 15:44

AMSAT and ARISS are currently supporting a FundRazr campaign to raise $150,000 for critical radio infrastructure upgrade on ISS to enable students to talk to astronauts in space via amateur radio.

Please help by donating today: https://fundrazr.com/arissnextgen?ref=ab_e7Htwa_ab_47IcJ9

ARISS is in critical need of the infrastructure upgrade to ensure that programs like talking in space using amateur radio can continue. Through your donations ARISS seeks the following upgrades:

+ Next Generation radio system will support easier radio mode transition, to enable new, exciting capabilities for hams, students and the general public including:
* New amateur radio communication and experimental capabilities, including an enhanced voice repeater and updated digital packet radio (APRS) capabilities
* Slow Scan TV (picture up and downlinks) in both US and Russian segments of ISS

+ New multi voltage power supply will support present and future radio capabilities and allow wireless experiments to be conducted

+ ARISS needs to build ten Next Generation radio systems to support our development on orbit operations, training and long term maintenance. This includes on-orbit (two units, one unit each in US and Russian segment), flight spares (two units), training (three units), testing (one unit), and ground-based maintenance and troubleshooting (two units)

Donations are fully tax deductible within the USA as AMSAT is A 501(c)(3) organization.

Source:AMSAT

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Alinco DR-635T Mobile / Base VHF / UHF March 31, 2015 No comments

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News ARRL Handbook 2019 September 21, 2018 No comments

ARRL Handbook 2019  Limited Edition! Six-Volume Ultimate Boxed Set For the first time, The ARRL Handbook has been divided into multiple volumes. All s... Read more

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Celebrating 25 Years of QRZ.com – Ham Nation 368 September 20, 2018 No comments

Ham Radio call sign lookup Fred Lloyd AA7BQ and QRZ.com’s big 25th birthday celebration! Fred Lloyd AA7BQ talks with Bob Heil about QRZ.com... Read more

Nominations Sought for 2018 ARRL Bill Leonard Award September 18, 2018 No comments

The ARRL Public Relations Committee is seeking nominations for the 2018 Bill Leonard Award, which recognizes this year’s best newspaper, radio, or tel... Read more

Radio City has been in business for 36 years, serving generations of loyalists and newcomers to the ham radio community. September 16, 2018 No comments

Read more

FCC Grants ARRL Temporary Waiver Request to Permit PACTOR 4 Use in Hurricane Relief September 16, 2018 No comments

The FCC has granted an ARRL request for a temporary waiver of Section 97.307(f) of the FCC’s Amateur Service rules to permit the use of PACTOR 4 digit... Read more

Hurricane Watch Net Remains Active as Florence Makes Landfall in North Carolina September 14, 2018 No comments

The Hurricane Watch Net (HWN), which has been tracking the approach of Hurricane Florence, plans to remain active “until no longer needed.” The net ac... Read more

Ham radio operators could play important role in potential Hurricane Florence disaster September 14, 2018 No comments

WEST CHESTER, Ohio – In the era of cell phones and the internet, oftentimes the aftermath of a hurricane can include a catastrophic loss of comm... Read more

How to listen to Hurricane Net Frequencies [ HWN ] September 13, 2018 No comments

“I am a amateur radio operator and am a member of The Hurricane Watch Net. We have been in operation for 50 years and provide support to The Nat... Read more

Hurricane Watch Net Activation Plans September 13, 2018 No comments

WWN is closely monitoring 3 systems – Florence, Isaac, and Invest 95L.  Prior to or shortly after landfall, Florence is forecast to slow in forward sp... Read more

Celebrating 25 Years of QRZ.com – Ham Nation 368

Thu, 09/20/2018 - 12:40
Ham Radio call sign lookup

Fred Lloyd AA7BQ and QRZ.com’s big 25th birthday celebration! Fred Lloyd AA7BQ talks with Bob Heil about QRZ.com‘s big 25th birthday celebration, the WIN System with Gordo, finishing the crystal radio build with George, Amateur Radio Newsline with Don, and more!

Review Coaxial Cable Preparation Tools for Crimp Connectors [ Video ] August 02, 2017 in: Review No comments

Strips Cable Type Belden 8213 RG11/U Belden 8214 RG-8 Foam Belden 8237 RG-8/U Belden 8267 RG-213 Belden 9258 RG-8X Belden 9913F7 Davis RF BURY-FLEX DXE-11U DXE-213U DXE-400MAX DXE-8U DXE-8X LMR-240 LMR-400 LMR-400DB LMR-400UF RG-213 RG-213/... Read more

Equipment LA1K5 is a solid-state 1200 watts 1.8 – 54MHz power amplifier September 19, 2018 in: Equipment No comments

The RFpower LA1K5 is a solid-state 1200 watts 1.8 – 54MHz power amplifier. It uses a ruggedness 1800 watts 65 V LDMOS technology NXP’s MRFX1K80 RFpower device for reliability and high spectral purity and has an internal highly r... Read more

Show More (adsbygoogle = window.adsbygoogle || []).push({}); News ARRL Handbook 2019 September 21, 2018 in: News No comments

ARRL Handbook 2019  Limited Edition! Six-Volume Ultimate Boxed Set For the first time, The ARRL Handbook has been divided into multiple volumes. All six volumes are included in a handsome, hard slipcase, for easy storage and access. Each vo... Read more

 

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Custom Coax Cables “Mark, W8BBQ shows how easy it is to use the DX Engineering Custom Cable Builder. Just four easy steps! The builder lets you... Read more

Review Palstar LA-1K – 1 kW Solid-State LDMOS HF amplifier September 22, 2018 No comments

“Here’s a full review of the Palstar LA-1K, it’s a 1 kW dual LDMOS solid-state HF linear. It covers from 6 to 160 meters. The LA-1K as RF sensin... Read more

ARRL Handbook 2019 September 21, 2018 No comments

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FT8 Roundup contest to test WSJT-X (v2) September 21, 2018 No comments

Photo:EA2CCG “A one-hour “practice contest” will be held next week using the FT8 mode  and the ARRL RTTY Roundup rules. Thursday, 27... Read more

Recent Posts Custom Coax Cables for Your Station September 22, 2018 No comments

Custom Coax Cables “Mark, W8BBQ shows how easy it is to use the DX Engineering Custom Cable Builder. Just four easy steps! The builder lets you... Read more

Review Palstar LA-1K – 1 kW Solid-State LDMOS HF amplifier September 22, 2018 No comments

“Here’s a full review of the Palstar LA-1K, it’s a 1 kW dual LDMOS solid-state HF linear. It covers from 6 to 160 meters. The LA-1K as RF sensin... Read more

ARRL Handbook 2019 September 21, 2018 No comments

ARRL Handbook 2019  Limited Edition! Six-Volume Ultimate Boxed Set For the first time, The ARRL Handbook has been divided into multiple volumes. All s... Read more

Icom 7610 HDSDR CW Skimmer Narrow

Thu, 09/20/2018 - 11:21

“I was pretty excited to see this and just wanted to share. More to come on how to set this up. Icom 7610, HDSDR and CW Skimmer”

CW Skimmer 2.1

Multi-channel CW decoder and analyzer

for Windows XP/7/8/10

Features
  • a high sensitivity CW decoding algorithm based on the methods of Bayesian statistics;
  • simultaneous decoding of ALL cw signals in the receiver passband – up to 700 signals can be decoded in parallel on a 3-GHz P4 if a wideband receiver is used;
  • a fast waterfall display, with a resolution sufficient for reading Morse Code dots and dashes visually;
  • the callsigns are extracted from the decoded messages, and the traces on the waterfall are labeled with stations’ callsigns;
  • the extracted callsigns are exported as DX cluster spots via the built-in Telnet cluster server;
  • a DSP processor with a noise blanker, AGC, and a sharp, variable-bandwidth CW filter;
  • an I/Q Recorder and player.
  • DOWNLOAD
(adsbygoogle = window.adsbygoogle || []).push({}); Digital Modes FT8 Roundup contest to test WSJT-X (v2) September 21, 2018 No comments

Photo:EA2CCG “A one-hour “practice contest” will be held next week using the FT8 mode  and the ARRL RTTY Roundup rules. Thursday, 27... Read more

WSJT-X 2.0 – New 77-bit messages information update September 18, 2018 No comments

“Hi all, Many of us have made many QSOs using the new 77-bit messages on 7.078 and 14.078 MHz. Overall the results have been good — but no... Read more

WSJT-X Version 2.0.0-rc1 Released – Download FT8 September 17, 2018 No comments

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New version of FT8CALL released September 15, 2018 No comments

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Ham Radio HF Digital Modes: Hellschreiber, Feld Hell Tutorial September 14, 2018 No comments

“Are you tired of PSK31? Are you sick of FT8? Is RTTY just a bunch of contesting anymore? At last, I finally finished this video and started ano... Read more

Software New Beta Version WSJT-X 2.0 ! September 20, 2018 No comments

WSJT-X  V2 As promised, the WSJT-X Development Group has announced a new “candidate release,” WSJT-X 2.0 rc1. This beta version of the popular digital... Read more

FT8, WSJT-X, & HamRadioDeluxe,video demo o latest v6.4.0.886 directly connected to log automatically in Logbook without JTAlert September 13, 2018 No comments

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Setup WSJT-X to forward QSOs to HRD Logbook without having to use additional software. Easy! Download the latest version of Ham Radio Deluxe. Read more

Ham Radio Deluxe 6.4.0.886 released [ WSJT-X + N1MM ] September 11, 2018 No comments

Most stable version ever. Adds direct integration with WSJT-X. Now works with N1MM This release includes 27 bug fixes, 1 minor enhancement, and 2 code... Read more

MacLoggerDX Version 6.20 Released September 07, 2018 No comments

Dog Park Software is pleased to announce that version 6.20 of MacLoggerDX has been released. What’s New in this version: * Requires OS X 10.9+.... Read more

Equipment LA1K5 is a solid-state 1200 watts 1.8 – 54MHz power amplifier September 19, 2018 No comments

The RFpower LA1K5 is a solid-state 1200 watts 1.8 – 54MHz power amplifier. It uses a ruggedness 1800 watts 65 V LDMOS technology NXP’s MRF... Read more

MTR3b_LCD Mountain Topper September 16, 2018 No comments

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Introducing . . . New MFJ CWMorse Micro Telegraph Keys September 16, 2018 No comments

MFJ-566M, $29,95 Red/Black Micro Morse Code Key with aluminum base. Liquid smooth and shielded steel ball bearings. Hardened steel pin rotation and st... Read more

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New Beta Version WSJT-X 2.0 !

Thu, 09/20/2018 - 10:41

As promised, the WSJT-X Development Group has announced a new “candidate release,” WSJT-X 2.0 rc1. This beta version of the popular digital mode suite incorporates many new FT8 and MSK144 features that will be of particular interest to the Amateur Radio contesting community. It incorporates all FT8 DXpedition Mode changes already developed in WSJT-X 1.9.1.

“Enhancements to the FT8 decoder ensure that in most situations decoding sensitivity is slightly better than for the old protocol. Symbol rates and occupied bandwidths are the same as before, and false-decode rates are significantly lower,” the user notes explain. “The decoding threshold for MSK144 is a fraction of a dB higher than before, owing to the slightly larger message payload and higher code rate.” WSJT-X 2.0 introduces no significant changes to the JT4, JT9, JT65, QRA64, ISCAT, Echo, or FreqCal protocols.

The new features are summarized on the WSJT-X website and in the Quick-Start Guide to WSJT-X 2.0. Contest-related changes include:

  • Support for standard ARRL Field Day exchanges, such as 6A SNJ.
  • Better support for North American VHF contests with improved handling of grids and /r rover call sign designators.
  • Six-character locators and call sign suffix support for portable operators, focused on EU VHF contesting
  • Support for standard contest exchanges in the ARRL RTTY Roundup, such as 579 MA or 559 0071.
  • Support for call signs of up to 11 alphanumeric characters, to accommodate non-standard and compound call signs.

Support for new exchanges should expand the ability of contesters to use FT8 and other WSJT-X protocols during contests that allow digital contacts and where the exchanges is a traditional signal report and state/province/country.

According to the release notes, WSJT-S 2.0 also offers “significantly better sensitivity” (about 1 dB) for the WSPR decoder. In addition, color highlighting of decoded messages provides worked-before status for call signs, grid locators, and DXCC entities on a by-band basis.  Color highlighting can also identify stations that have — or have not — uploaded their logs to “Logbook of The World” (LoTW) within the past year.

For the convenience of beta-testers, the –rc1 and –rc2 releases will offer receive and transmit capability for both the new FT8 protocol and the older one. Starting with –rc3 and the full release of WSJT-X 2.0, only the new protocol will be supported. zIn contrast, the new MSK144 protocol replaces the old one from the outset, with no backward compatibility.

Those participating in WSJT-X beta tests are expected to report their experiences to the developers and upgrade to the general availability release when it becomes available. Visit the WSJT-X web page for more information. 

Source:ARRL

(adsbygoogle = window.adsbygoogle || []).push({}); News ARRL Handbook 2019 September 21, 2018 in: News No comments

ARRL Handbook 2019  Limited Edition! Six-Volume Ultimate Boxed Set For the first time, The ARRL Handbook has been divided into multiple volumes. All six volumes are included in a handsome, hard slipcase, for easy storage and access. Each vo... Read more

VHF Chance to win a brand new Boxchip S700A ! September 19, 2018 in: VHF No comments

Network-radios.com and Boxchip created this amazing campaign! The S700A is a hybrid android radio that allows 100% coverage: via 3G/4G/LTE/WiFi/VHF or UHF FM analog and DMR Tier II. You will always be connected. And it can be yours, for fre... Read more

Review ICOM IC-R30 Scanning Receiver is Announced November 12, 2016 No comments

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SMΩRF RF Vector Power Meter by microHAM [ Video ] December 02, 2016 No comments

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Chance to win a brand new Boxchip S700A !

Wed, 09/19/2018 - 15:51

Network-radios.com and Boxchip created this amazing campaign!

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  • Transmit Power: 0.5-2W (33dBm)
  • FM Modulation: 11K0F3E@12.5KHz;16K0F3E@25KHz
  • 4FSK Digital modulation: 12.5KHz only data:7K60FXD,12.5kHz data and voice:7K60FXW
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  • Processor: Octa core 1.5GHz
  • OS: Android 6.0+
  • LCD: Gorilla III, 4.0inches,Solar visibility
  • Cameras: 8MP+ 5MP
  • GSM: B2 B3 B5 B8
  • WCDMA: B1 B2 B5 B8
  • TD-SCDMA: B34 B39
  • FDD-LTE: B1 B2 B3 B4 B5 B7 B8 B28A B28B
  • TDD-LTE: B38 B39 B40 B41
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  • Compatible with PTT4U 

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Frequency Band UHF1: 400-470MHz or VHF: 136-174MHz Channel 32 or customize Channel Spacing 12.5KHz/25KHz Working voltage 3.7V DC Frequency stability ±1.5 ppm Antenna impedance 50Ω,Analog 0.3μV (12dB SINAD) Sensitivity 0.4μV (20dB SINAD)DMR 0.3μV /BER5% Adjacent Channel Selectivity 60dB@12.5KHz Intermodulation rejection 70dB@25KHz Spurious response rejection 75dB@12.5/25KHz Blocking 90dB FM hum & noise -40dB@12.5kHz,-45dB@25kHz Distortion at rated audio ≤5% Frequency response mask +1 ~ -3 dB Conducted spurious emissions < -57 dBm Transmit power 0.5W/2W(33dBm) FM modulation 11K0F3E@12.5KHz;16K0F3E@25KHz 4FSK Digital modulation 12.5KHz only data:7K60FXD,12.5kHz data and voice:7K60FXW Conducted/radiated emissions -36dBm<1GHz,-30dBm>1GHz Modulation limiting ±2.5KHz@12.5KHz,‘±5.0KHz@25KHz FM hum & noise -40dB@12.5KHz,-45dB@25KHz Channel power 60dB@12.5KHz,70dB@25KHz Audio frequency response +1 ~ -3 dB Distortion at rated audio ≤3 % Vocoder type AMBE++ ETSI DMR ETSI-TS102 361-1,- 2,-3(*) DMR Mode ETSI DMR Tier II Waterproof IP67,Dustproof,Shockproof

 

PoC Main Parameters Processor Octa core 1.5GHz Android Android6.0+ LCD touch Gorilla III Lcd touch feature Web touch/golve touch LCD Size 4.0inches,Solar visibility Camera 8MP+ 5MP camera; Flash light Highlight flash LED Dual-SIM Supported GSM/GPRS/EDGE 850/900/1800/1900MHz GSM B2 B3 B5 B8 WCDMA B1 B2 B5 B8 TD-SCDMA B34 B39 FDD-LTE B1 B2 B3 B4 B5 B7 B8 B28A B28B TDD-LTE B38 B39 B40 B41 VOLTE Support Bluetooth Bluetooth 4.1 NFC Support or Optional Battery capacity 4500mAh Wi-Fi (WLAN) 2.4G/5.8G, IEEE 802.11b/g/n GPS navigation GPS/AGPS/GLONASS

 

News ARRL Handbook 2019 September 21, 2018 in: News No comments

ARRL Handbook 2019  Limited Edition! Six-Volume Ultimate Boxed Set For the first time, The ARRL Handbook has been divided into multiple volumes. All six volumes are included in a handsome, hard slipcase, for easy storage and access. Each vo... Read more

Review Retevis Ailunce HD1 GPS dual band 2m 70cm DMR [ Review and Teardown ] September 21, 2018 in: Review No comments

  Ailunce HD1 Dual Band DMR Amateur Digital Radio Almost all the operations can be done via radio keypad.  Dual Band DMR Radio,Analog and Digital Combined.  Compatible with Motorola Tier  No need PC to program your radio Description: HD1 du... Read more

LA1K5 is a solid-state 1200 watts 1.8 – 54MHz power amplifier

Wed, 09/19/2018 - 15:08
The RFpower LA1K5 is a solid-state 1200 watts 1.8 – 54MHz power amplifier. It uses a ruggedness 1800 watts 65 V LDMOS technology NXP’s MRFX1K80 RFpower device for reliability and high spectral purity and has an internal highly reliable, Power Factor Correction, low-noise switching power supply, in order to reduce the overall weight. At last, but not last, the switching power supply meet the severe European Rules about Energetic Efficiency.   The thermal design is very conservative due to a special 6 kg weight copper/aluminium heatsink. This, assisted by a sophisticated thermal management system, allow the channel temperature of the LDMOS device to remain within limits which should ensure extended life.   A major objective of the RF design has been to significantly exceed the RF spurious signal generation requirements of the European Rules (RED Directive) for amateur radio equipment. To this end the RFpower LA1K5 has more extensive filtering than is usual in HF amplifiers. An efficient internal ALC circuit contributes so that the RF output signal is even more clean.   While LDMOS RFpower Mosfets are amongst the most rugged RF power amplifier devices currently available, they are sensitive to RF overdrive. The RFpower LA1K5 has both extensive monitoring to minimise the risk of damage by overdrive and a conservatively designed input circuit.   The RFpower LA1K5 employs a full touch-screen control using a 800×480 pixel 5.0″ full colour TFT display module. A wide range of monitoring functions can be displayed with high precision, including RF output power, RF input power, Antenna VSWR, PA drain current, PA drain voltage, LDMOS temperature and more.   Band selection is fully automatic by RF-sense circuit. The presence of valid in-band signals is detected and will initiate switching automatically to that band. For a more high speed band selection, Kenwood CAT Command, Yaesu Band Data Input and Icom Band Voltage Input are included. Overview and control of all important parameters via 5.0″ color 800×480 px touch screen module; no control buttons —————————— Frequency Coverage: 1.8 to 54 (70) MHz (all amateur frequencies WARC & 60m included – 70 MHz on request) ——————————    Operation Mode: All modes ——————————     Input Drive Power: 25 watts maximum —————————— Auto Band-change RF Sense Input: Yes (by internal frequency counter) ——————————     Input circuit: Broadband, VSWR 1.2:1 maximum ——————————     VSWR Output Protection: 2:1 ——————————     PA Output Power: 1200 watts ——————————     IMD3: Better than -32dBc (-38 dB PEP) ——————————     Harmonics Suppression: HF = better than -50dB   VHF = better than -60dB —————————— RF Output Filters: 7-pole low-pass type, made using high-voltage mica (Cornell Dubilier) & porcelain (American Technical Ceramics) capacitors and oversized coils wound on T130 (Micrometals) iron powder toroid cores ——————————     IN/OUT Impedance: 50 ohms unbalanced Amphenol™ SO-239 connectors ——————————     RF POWER TRANSISTOR: 1800 watts MRFX1K80 NXP™ LDMOS MOSFETs ——————————     Amplifier Circuitry: Push pull AB class —————————— ALC: 0 Vdc to -11 Vdc (adjustable) ——————————     Cooling: Forced air ——————————     Acoustic Noise Level58 dB(A) maximum ——————————     RX/TX Switching Time: Adjustable ——————————     RF Protections: High antenna VSWR, Wrong band, Input verdrive, Over temperature ——————————     Power Supply Protections: Short circuit, Over current, Over voltage, Over temperature, Power ON soft-start circuit ——————————     Power Supply Range: From 170 Vac to 260 Vac 50/60Hz continuous for full RF output power ——————————         Standard RulesAccording to EU Electromagnetic Compatibility Standard and EU Electrical Safety Standard – ROHS ——————————     Dimensions35 x 40 x 17 cm  – 14 x 16 x 7 in (W x D x H) ——————————     Weight14 kg (30.8 lb) —————————— Warranty: 5-year —————————— Introductory Price: € 2.806,00  – http://www.rfpower.it (adsbygoogle = window.adsbygoogle || []).push({}); VHF AOR AR-DV10 April 14, 2018 in: VHF No comments

AR-DV10 Digital Handheld Scanning Receiver Features :  100kHz-1300MHz analogue & digital modes 10 Digital Modes : TETRA,P25(Phase 1+2),DMR,Mototrbo,dPMR,NXDN,D-STAR,Alinco,Yaesu Automatic detection of digital modes during scan and searc... Read more

Review Tools for Every Ham [ ARRL PODCAST ] September 14, 2018 in: Review No comments

The Doctor discusses basic tools that every amateur should have in his or her station.   Read more

Antenna The X7 Triband Yagi – Cushcraft December 22, 2014 in: Antenna No comments

  X7 BIG THUNDER TRIBANDER YAGIThe X7 Triband Yagi is geared to set new standards in both radiating performance and mechanical reliability. The product development team has employed the latest computer modeling technology to achieve a... Read more

WSJT-X 2.0 – New 77-bit messages information update

Tue, 09/18/2018 - 14:15

“Hi all,

Many of us have made many QSOs using the new 77-bit messages on 7.078 and 14.078 MHz. Overall the results have been good — but not surprisingly, bugs are being identified. Several are important enough to warrant a second candidate release well before the originally suggested target date, October 15. We will make a suitable announcement here, after things have settled down a bit.

Many have noticed signals in the 7.078 and 14.078 MHz sub-bands that look like FT8 but are undecodable. These appear to be “FT8CALL” 
signals. FT8CALL is *not* FT8 — and probably it should not have “FT8” 
in its name. It appears that the author of FT8CALL did not bother to select a different Costas array for synchronization. If the legacy FT8 decoder is enabled, WSJT-X will waste time fruitlessly trying to decode these non-FT8 messages.

For the record, and to avoid the necessity for multiple posts on the same issue, here is a list of currently known bugs:

1. If a message’s first callsign contains only characters 0-9 and A-F it will be interpreted as a hexadecimal number. The message will be transmitted and decoded as if the first callsign were telemetry data; the remaining parts are lost. (Apologies to holders of all such callsigns… we’ll fix this very soon.)

2. Some nonstandard callsigns (for example, 8Z88ND) are not recognized as nonstandard. Consequently the auto-generated messages do not include <…> brackets, and free-text messages are improperly sent. (Again, our
apologies…)

3. Bare CQs (with no grid locator) are flagged as new DXCCs.

— 73, Joe, K1JT”

WSJT-X 2.0 Download

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Award programme 100th Anniversary of Polish Independence

Tue, 09/18/2018 - 11:37

Dear Amateur Radio Friends,

On behalf of Mr Waldemar Sznajder, 3Z6AEF – President of the Polish Amateur Radio Union (PZK) and Mr Piotr Skrzypczak, SP2JMR – Secretary of the PZK, I have the honour to invite all of you to participate in a special award programme, organised by the Polish Amateur Radio Union on the occasion of The 100th Anniversary of Poland Regaining its Independence.

You will find any necessary details about this programme under the address given below:

https://logsp.pzk.org.pl?page=award&id=32

The programme will last from 1st October until 30th November 2018.

Good luck as a whole!

Kindest 73,

Paweł Zakrzewski, SP7TEV – IARU Liaison Officer of the Polish Amateur Radio Union (PZK)

rules
  1. Award name: 100th Anniversary of Poland’s Regaining Independence.
  2. The purpose of the event: Commemorating the anniversary of Poland’s regaining independence and promoting the celebration in radio amateur societes around the world.
  3. Organizer: Polish Radio Amateur Union (Polski Związek Krótkofalowców) in cooperation with other Polish organizations.
  4. Patronage: President od the Polish Radio Amateur Union, Waldemar Sznajder (3Z6AEF).
  5. Award Manager: Hubert Marcinek (SP9MDY).
  6. Time interval: 1st October – 30th November 2018.
  7. Event stations:
    • with an I (Indepedence) suffix: HF100I, 3Z100I, SP100I, SQ100I, SN100I, SO100I;
    • with a N (Niepodległość) suffix: HF100N, 3Z100N, SP100N, SQ100N, SN100N, SO100N;
    • with a POL (Poland) suffix: HF100POL, 3Z100POL, SP100POL, SQ100POL, SN100POL, SO100POL;

    and other additional stations cooperating as part of the event, if shown on its callsign list.

  8. Bands and modes: All amateur HF and VHF bands (160m – 13cm)(1), using any modes(2), one QSO per band/mode is scored.
  9. Requirements: in order to obtain an award, stations have to score at least 100 points, according to conditions shown below:
    • Polish stations – 3 points for unique QSO with every main event station, 2 points for QSO with supporting station;
    • other European stations – 4 pts for QSO with main event station, 3 pts for QSO with supporting one;
    • DX stations – 8 pts for QSO with main event station, 5 pts for QSO with supporting one;

    After obtaining 100 points, the next QSOs would count in the competitions described below. Scoring is based on the logs of the event stations, correspondent logs, GCRs, and QSL cards are not required.

  10. e-awards: current score and certificates can be obtained at: 100np.pzk.org.pl. In special cases, it is possible to obtain a certificate via e-mail. Award is avaiable for SWLs also, via Award Manager, by sending proper log excerpts to 100np@pzk.org.pl.
  11. Paper certificates: classic awards will be granted for:
    • top 3 Polish stations;
    • top 3 European stations;
    • top 3 DX stations.
  12. Moreover, special awards are sponsored by the President of the PZK, for each SP, EU and DX station with highest score.
  13. QSL cards: exchange is arranged according to info on qrz.com for each station, event logs will be submitted to LoTW also.

– award manager,
Hubert Marcinek (SP9MDY)

1) valid HF bands: 160m, 80m, 40m, 30m, 20m, 17m, 15m, 12m and 10m; VHF bands: 6m, 4m, 2m, 70cm, 23cm and 13cm; 2) valid modes (ADIF compliant): AM, ARDOP, ATV, C4FM, CHIP, CLO, CONTESTI, CW, DIGITALVOICE, DOMINO, DSTAR, FAX, FM, FSK441, FT8, HELL, ISCAT, JT4, JT6M, JT9, JT44, JT65, MFSK, MSK144, MT63, OLIVIA, OPERA, PAC, PAX, PKT, PSK, PSK2K, Q15, QRA64, ROS, RTTY, RTTYM, SSB, SSTV, T10, THOR, THRB, TOR, V4, VOI, WINMOR and WSPR. (adsbygoogle = window.adsbygoogle || []).push({}); VHF QYT KT8900 UHF VHF Mini Mobile Radio May 18, 2015 No comments

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Nominations Sought for 2018 ARRL Bill Leonard Award

Mon, 09/17/2018 - 19:35

The ARRL Public Relations Committee is seeking nominations for the 2018 Bill Leonard Award, which recognizes this year’s best newspaper, radio, or television news story about Amateur Radio. The award honors professional journalists or journalistic teams whose outstanding coverage highlights the enjoyment, importance, and public service value that Amateur Radio offers. It was created as a tribute to the late CBS News President Bill Leonard, W2SKE, an avid radio amateur and advocate. Awards are presented in print, audio, and visual categories.

Members of the ARRL Public Relations Committee will judge nominations and recommend winners to the ARRL Board of Directors, which will announce winners at its annual meeting next January.

Award winners in each category (either an individual or a group) will receive an engraved plaque, and a $250 contribution will be made in each winning entrant’s name to the charity of their choice.

Each nominee must be a professional journalist or a professional journalistic team in print, electronic media, or multimedia. The nominee’s work must have appeared in English, between December 1, 2017, and November 30, 2018, in a commercially published book, recognized general-circulation (non-trade) daily or weekly newspaper, general- or special-interest magazine (except publications predominantly about Amateur Radio), commercial or public radio or television broadcast (including services delivered via cable), a website operated by a generally recognized journalistic organization (e.g., newspaper, magazine, broadcast station, or network), or multimedia format intended for and readily accessible to the general public within the US. The scope of the work nominated may be a single story or series.

The story must be truthful, clear, and accurate, reflecting high journalistic standards. Submission may be made by the authors of the work or on their behalf by an individual who believes the work merits the award.

Submit entries to ARRL Headquarters c/o Communication Manager, ARRL, 225 Main St., Newington, CT 06111, by 5 PM ET on November 30, 2018.

For more information about the award, contact ARRL Communications Manager David Isgur, N1RSN, or call (860) 594-0328. The nomination form is on the ARRL website.

Source:ARRL

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WSJT-X Version 2.0.0-rc1 Released – Download FT8

Mon, 09/17/2018 - 13:30

Go to New Features in WSJT-X 2.0 for a detailed description of its new features.  Further technical information (primarily of interest to programmers) is available here.

Release Schedule: Because the FT8 and MSK144 protocols will not be backward compatible with those in Version 1.9.1, there will be a staged schedule for testing and eventual release.  Target dates for candidate releases are as follows:

  • September 17, 2018:   -rc1        Expires October 31, 2018
  • October 15, 2018:       -rc2        Expires November 30, 2018
  • November 12, 2018:    -rc3        Expires December 31, 2018
  • December 10, 2018:      GA        Full release of WSJT-X 2.0

Candidate Release -rc1 for WSJT-X 2.0
Candidate releases are intended for beta testers: individuals interested in testing the program’s new features and providing feedback to the WSJT Development Group.  At the time of this first candidate release we have not yet completed the WSJT-X 2.0 User Guide.  Potential users of the candidate release should read Quick-Start Guide to WSJT-X 2.0 before proceeding.  

Installation packages:

Windows:

Linux, macOS:

  • Installation packages will be posted here as soon as they are available.

Source Code:

  • Source code for WSJT-X 2.0-rc1 is available here: wsjtx-2.0.0-rc1.tgz
  • New Features in WSJT-X 2.0
    September 17, 2018
    ————————–This document is an update to the white paper “Plans for WSJT-X
    Version 2.0″ that was publicly distributed on July 26, 2018. It
    describes the most important enhancements in WSJT-X 2.0 relative to
    version 1.9.1.A majority of new program features involve the FT8 and MSK144
    protocols. Both modes have been upgraded to use use 77-bit
    information payloads rather than the 75 bits of the older FT8 protocol
    or 72 bits of JT4, JT9, JT65, MSK144, and QRA64. Cyclic redundancy
    checks (CRCs) that protect against false decodes have been increased
    from 12 to 14 bits (FT8) and from 8 to 13 bits (MSK144). These
    changes bring many benefits, including support of structured messages
    optimized for the following special types of QSOs and exchanged
    information:1. NA VHF Contest operation with full and transparent support of grid
    locators and “/R” (Rover) callsigns

    2. EU VHF Contest operation with the exchange of 6-digit locators, QSO
    serial numbers, and “/P” (portable) callsigns

    3. ARRL Field Day operation with standard Field Day exchanges such as
    “6A SNJ”

    4. ARRL RTTY Roundup operation with standard contest exchanges such as
    “579 NJ” or “559 0071”

    5. Compound and nonstandard callsigns (up tp 11 characters); no need
    for distinctions about “Type 1” or “Type 2” prefixes/suffixes

    6. A special “telemetry” message format for exchange of arbitrary
    information up to 71 bits

    7. All features of FT8 DXpedition mode, as in WSJT-X v1.9.1

  • Enhancements to the FT8 decoder ensure that in most situations
    decoding sensitivity is slightly better than for the old protocol.
    Symbol rates and occupied bandwidths are the same as before, and
    false-decode rates are significantly lower. The decoding threshold
    for MSK144 is a fraction of a dB higher than before, owing to the
    slightly larger message payload and higher code rate.

    OTHER PROGRAM ENHANCEMENTS: WSJT-X 2.0 has several other new features
    and capabilities. The WSPR decoder has significantly better
    sensitivity, by about 1 dB. Color highlighting of decoded messages
    provides worked-before status for callsigns, grid locators, and DXCC
    entities on a “by band” basis. Color highlighting can also identify
    stations that have (or have not) uploaded their logs to “Logbook of
    the World” (LoTW) within the past year. (Recent information from LoTW
    for this purpose can be downloaded from the ARRL web site.)

    WSJT-X 2.0 introduces no significant changes to any of the modes JT4,
    JT9, JT65, QRA64, ISCAT, Echo, or FreqCal.

    IMPORTANT: For the convenience of beta-testers, the first and second
    release candidates — releases with “-rc1” or “-rc2” in their names —
    will have Rx and Tx capability for both the new FT8 protocol and the
    older one. Starting with the third release candidate (“-rc3”), and in
    the general-availability full release of WSJT-X 2.0, only the new
    protocol will be supported. In contrast, the new MSK144 protocol
    replaces the old one from the outset, without backward compatibility.
    To minimize on-the-air confusion, it’s important that users be aware
    of these distinctions and the schedule for release of WSJT-X 2.0, as
    detailed below.

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  • MESSAGE FORMATS: The following table shows examples of message formats
    supported by the new FT8 and MSK144 protocols. Parameters i3 and n3
    (shown in the first column) are used in the software to define major
    and minor 77-bit message types.———————————————————————————-
    i3.n3 Example Messages Comments
    ———————————————————————————-
    0.0 TNX BOB 73 GL Free text
    0.1 K1ABC RR73; W9XYZ <KH1/KH7Z> -08 DXpedition Mode
    0.2 PA9XYZ 590003 IO91NP EU VHF Contest
    0.2 G4ABC/P R 570007 JO22DB EU VHF Contest
    0.3 K1ABC W9XYZ 6A WI ARRL Field Day
    0.3 W9XYZ K1ABC R 2B EMA ARRL Field Day
    0.5 123456789ABCDEF012 Telemetry (71 bits, 18 hex digits)
    1. CQ FD K1ABC FN42 ARRL Field Day
    1. CQ RU K1ABC FN42 ARRL RTTY Roundup
    1. CQ K1ABC FN42
    1. CQ TEST K1ABC FN42 NA VHF Contest
    1. CQ TEST K1ABC/R FN42 NA VHF Contest
    1. K1ABC W9XYZ EN37
    1. K1ABC W9XYZ -09
    1. K1ABC W9XYZ R-17
    1. K1ABC W9XYZ RRR
    1. K1ABC W9XYZ 73
    1. K1ABC W9XYZ RR73
    1. K1ABC/R W9XYZ EN37 NA VHF Contest
    1. K1ABC W9XYZ/R RR73 NA VHF Contest
    1. K1ABC/R W9XYZ/R RR73 NA VHF Contest
    1. <PJ4/K1ABC> W9XYZ Compound call
    1. W9XYZ <PJ4/K1ABC> 73 Compound call
    1. W9XYZ <YW18FIFA> -13 Nonstandard call
    1. <YW18FIFA> W9XYZ R+02 Nonstandard call
    1. W9XYZ <YW18FIFA> RRR Nonstandard call
    1. <YW18FIFA> W9XYZ RR73 Nonstandard call
    2. CQ G4ABC/P IO91 EU VHF contest
    2. G4ABC/P PA9XYZ JO22 EU VHF contest
    2. PA9XYZ G4ABC/P RR73 EU VHF contest
    3. K1ABC KA0DEF 559 MO ARRL RTTY Roundup
    3. K1ABC W9XYZ 579 WI ARRL RTTY Roundup
    3. KA1ABC G3AAA 529 0013 ARRL RTTY Roundup
    3. TU; KA0DEF K1ABC R 569 MA ARRL RTTY Roundup
    3. TU; K1ABC G3AAA R 559 0194 ARRL RTTY Roundup
    3. W9XYZ K1ABC R 589 MA ARRL RTTY Roundup
    4. CQ PJ4/K1ABC
    4. CQ YW18FIFA Nonstandard call
    4. <KA1ABC> YW18FIFA RR73 Nonstandard call
    4. <W9XYZ> PJ4/K1ABC RRR Nonstandard call
    4. <W9XYZ> YW18FIFA Nonstandard call
    4. <W9XYZ> YW18FIFA 73 Nonstandard call
    4. PJ4/K1ABC <W9XYZ> Nonstandard call
    4. PJ4/K1ABC <W9XYZ> 73 Nonstandard call
    4. YW18FIFA <W9XYZ> RRR Nonstandard call
    ———————————————————————————-

    In the above list, callsigns enclosed in angle brackets (e.g.,
    <PJ4/K1ABC>, <YW18FIFA>) are transmitted as hash codes. They will be
    displayed correctly by receiving stations that have copied the full
    callsign without brackets in a previous transmissiion. Otherwise the
    receiving software will display <…>. Hash collisions are possible
    but should be rare, and extremely rare within a particular QSO.

    Some minimal message sequences that take advantage of the new 77-bit
    formats are illustrated below. Model QSOs 1 and 2 are the same as
    those used by the old FT8 and MSK144 protocols, and QSO number 3 is
    the same as the existing FT8 DXpedition Mode. Model QSOs 4 through 9
    were not possible with the old protocols.

    ———————————————————————————-
    1. Standard QSO
    ———————————————————————————-
    CQ K1ABC FN42
    K1ABC W9XYZ EN37
    W9XYZ K1ABC -11
    K1ABC W9XYZ R-09
    W9XYZ K1ABC RRR
    K1ABC W9XYZ 73

    ———————————————————————————-
    2. Short-cycle QSO
    ———————————————————————————-
    CQ K1ABC FN42
    K1ABC W9XYZ -09
    W9XYZ K1ABC R-11
    K1ABC W9XYZ RR73
    W9XYZ K1ABC 73

    ———————————————————————————-
    3. FT8 DXpedition Mode
    ———————————————————————————-
    CQ KH1/KH7Z
    KH7Z K1ABC FN42
    K1ABC KH7Z -12
    KH7Z K1ABC R-14
    KH7Z W9XYZ EN37
    … possibly other callers …
    K1ABC RR73; W9XYZ <KH1/KH7Z> -08

    ———————————————————————————-
    4. ARRL Field Day
    ———————————————————————————-
    CQ FD K1ABC FN42
    K1ABC W9XYZ 6A WI
    W9XYZ K1ABC R 2B EMA
    K1ABC W9XYZ RR73

    ———————————————————————————-
    5. ARRL VHF Contests
    ———————————————————————————-
    CQ TEST K1ABC/R FN42 “/R” is optional
    K1ABC/R W9XYZ EN37 on either callsign
    W9XYZ K1ABC/R R FN42
    K1ABC/R W9XYZ RR73

    ———————————————————————————-
    6. ARRL RTTY Roundup
    ———————————————————————————-
    CQ TEST K1ABC FN42
    K1ABC W9XYZ 579 WI
    W9XYZ K1ABC R 589 MA
    K1ABC KA0DEF 559 MO
    TU; KA0DEF K1ABC R 569 MA
    KA1ABC G3AAA 529 0013
    TU; G3AAA K1ABC R 559 MA

    ———————————————————————————-
    7. EU VHF Contest
    ———————————————————————————-
    CQ TEST G4ABC/P IO91 “/P” is optional
    G4ABC/P PA9XYZ JO22 on either callsign
    PA9XYZ 590003 IO91NP
    G4ABC/P R 570007 JO22DB
    PA9XYZ G4ABC/P RR73

    ———————————————————————————-
    8. Compound or nonstandard callsign calling CQ
    ———————————————————————————-
    CQ PJ4/K1ABC
    PJ4/K1ABC <W9XYZ>
    W9XYZ <PJ4/K1ABC> -11
    <PJ4/K1ABC> W9XYZ R-09
    <W9XYZ> PJ4/K1ABC RRR
    PJ4/K1ABC <W9XYZ> 73

    ———————————————————————————-
    9. Compound or nonstandard callsign answering CQ
    ———————————————————————————-
    CQ W9XYZ EN37
    <W9XYZ> YW18FIFA
    <YW18FIFA> W9XYZ -11
    W9XYZ <YW18FIFA> R-09
    YW18FIFA <W9XYZ> RRR
    <W9XYZ> YW18FIFA 73
    ———————————————————————————-

     

    RELEASE SCHEDULE: Candidate releases of WSJT-X 2.0 will have built-in
    expiration dates after which they cannot be used. Target dates for
    planned releases are as follows:

    September 17: -rc1 (expires Oct 31)
    October 15: -rc2 (expires Nov 30)
    November 12: -rc3 (expires Dec 31)
    December 10: GA Full release of WSJT-X 2.0

    WSJT-X 2.0-rc1 provides the first chance for beta testers to use the
    new 77-bit messages. It supports the old (v1.9.1) FT8 protocol as
    well as the new message types illustrated above. To avoid QRMing
    legacy FT8 users with incompatible messages they can’t decode, and to
    help concentrate testing activity into a few sub-bands, we recommend
    using the new FT8 capabilities on the 40- or 20-meter bands at dial
    frequencies 7.078 or 14.078 MHz. These frequencies are offered as FT8
    alternatives on the drop-down frequency-selection control on the main
    window.

    The new MSK144 is fully functional for QSOs between any two stations
    using a WSJT-X v2.0 release. MSK144 is not backward compatible with
    earlier program versions. Therefore during the testing period,
    approximately Sept 17 through December 10, we recommend using the new
    MSK144 capabilities on 50.380 MHz (IARU Region 1) or 50.280 (Regions 2
    and 3). By specific arrangement, or as soon as most regular users
    have upgraded to a v2.0 release, MSK144 activity can be moved back to
    50.360 (Region 1) or 50.260 (Regions 2 and 3).

    By design, our proposed release schedule will make WSJT-X 2.0 usable
    for all relevant ARRL operating events and Eurpoean VHF contests after
    January 1, 2019.

    Dates of relevant upcoming ARRL contests
    —————————————-
    RTTY Roundup: January 5-6, 2019
    VHF Sweepstakes: January 19-21, 2019