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Updated: 1 hour 33 min ago

ARRL White Paper Provides Context for Recommended Governance Changes

3 hours 50 min ago

ARRL has released a “white paper” that provides some context to explain proposed alterations to the Articles Of Association and By Laws that the Executive Committee (EC) of the Board of Directors recommended for full Board passage at its April 21 meeting. Study continues of the so-called “Code of Conduct” for Board members, known officially as the ARRL Policy on Board Governance and Conduct of Members of the Board of Directors and Vice Directors, with changes to be recommended for later Board consideration.

At its January meeting, the Board pledged to provide the membership with the rationale and purpose behind proposed changes to the Articles and By Laws that it had adopted last July. In April the EC recommended minor revisions to two new amendments to ARRL’s Articles of Association and one change to its By-Laws for Board approval at its July 2018 meeting. In all, four changes are being proposed.

One proposed change involves the wording of the Articles that address indemnification and personal liability of ARRL Directors, Vice Directors, and officers. Although the Board had adopted new Articles 15 and 16 at its July 2017 meeting, ARRL’s Connecticut counsel recommended two revisions, requiring Board approval, to make the wording of those changed sections consistent with Connecticut state statutes.

Article 15 addresses personal liability of Directors, Vice Directors, and volunteer and staff officers for damages due to a breach of duty in their respective roles, provided the breach did not involve a “knowing and culpable” violation of law, improper personal economic gain, a lack of good faith, and conscious disregard or sustained and unexcused pattern of inattention amounting to abdication of duty.

Article 16 would provide indemnification of Directors, Vice Directors, and volunteer and staff officers for any monetary judgement based on any actions taken or any failure to take action, except under the circumstances listed in Article 15.

A change to the wording of Article 1 would add “ARRL, the national association for Amateur Radio” as an informal name for the organization, in addition to “American Radio Relay League, Inc.” This adds the informal name of the organization to the formal name spelled out in Article 1 to indicate that either rendering is a proper description of the organization.

A clarification of the Directors/Vice Directors election cycle spelled out in By Law 23 also was required. This involved only a wording change to include the correct years involved.

The minutes of the April 21 ARRL Executive Committee meeting include the specific wording of the proposed changes.

The Board made two specific edits to the “Code of Conduct” at its January meeting and directed the EC to review the remaining provisions with the intention of presenting those to the full Board. The EC began this process at its April meeting, considering a simplified version of a document recommended by the National Council of Non-Profits but realized it would take longer than anticipated to complete this review and present its findings to the Board and the membership. The EC expects to have a discussion and a proposal for the Board’s consideration later this year.

Source:ARRL

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Amateur Radio Transponders on Planned Chinese Satellites to Include HF

Wed, 05/23/2018 - 10:21

China’s Amateur Radio Satellite organization, CAMSAT, has released some details of three new Amateur Radio satellites that could be launched as early as September. Two of the satellites, CAS-5A and CAS-6, will carry transponders, and one of them will have HF capability.

CAS-5A is a 6U CubeSat. It will an HF/HF (21/29 MHz) mode linear transponder; an HF/UHF (21/435 MHz) mode linear transponder; an HF CW telemetry beacon; VHF/UHF mode linear transponder; a VHF/UHF mode FM transponder; a UHF CW telemetry beacon, and UHF AX.25 4,000/9,600-baud GMSK Telemetry. Transponders will have 30 kHz passbands, except for the H/U unit, which will be 15 kHz.

The tiny CAS-5B, weighing 1/2 kilogram, will be deployed from CAS-5A in orbit. It will carry a UHF CW beacon on an Amateur Radio frequency. It will be placed into a 539 × 533 kilometer, 97.5° orbit.

CAS-5A/B will launch from the Jiuquan Satellite Launch Center.

CAS-6, a 50-kilogram microsat, will include a VHF CW telemetry beacon; a U/V mode 20 kHz linear transponder, and AX.25 4,800-baud GMSK telemetry downlink. It will also carry an atmospheric wind detector and other systems that will operate on non-amateur frequencies.

A launch at sea is planned for CAS-6 from the China Academy of Launch Vehicle Technology. The microsat will be placed into a 579 × 579 kilometer, 45° orbit.

CAMSAT has applied to the International Amateur Radio Union (IARU) to coordinate frequencies for all three spacecraft. — Thanks to AMSAT News Servicevia AMSAT-UK

Source:ARRL

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Wed, 05/23/2018 - 07:28
Microprocessor-based data processing.

A distinctive feature of the transceiver is the modern technology of processing data in DSP and output information to a large 7 “touch-colored color TFT LCD display with a resolution of 800×480 with a capacitive touch screen.

Minimum delays in reception and transmission. Qualitative formation of SSB signal. The user can adjust a large number of parameters of the transceiver.

Informative quality spectrum analyzer and waterfall

To date, a transceiver of this class is the only one having such a quality spectrum analyzer with a waterfall. The output of the information of the spectrum analyzer occurs in real time. This allows you to get full visual information about correspondents in the bandwidth of the analyzer.

The spectrum analyzer has a configurable depth of the visible region and is in the range of -150 dB to 10 dB, which allows the operator to adjust the spectrum analyzer to the current reception conditions.

Second survey receiver

An additional survey receiver operating in the band from 0.01 to 60 MHz, allows you to quickly monitor other bands and stations in the band of the first receiver. Independent settings for the viewband, the type of modulation and the width of the filter for the second receiver.

Audio Player

Built-in audio player, allows you to record the received stations and, if necessary, make a signal demodulation to the correspondent.

Signal Predication

The signal pre-emphasis function in the power amplifier reduces the intermodulation distortion during transmission in SSB and digital communication modes.

Built-in automatic antenna tuner and power supply

Built-in antenna tuner and power supply. will allow to use the transceiver both in stationary conditions and in the field.

Characteristics  
  • The range of received MHz is 0.01 – 60 and transmitted frequencies, MHz 1 – 60
  • Sensitivity, μV 0.1 MDS (500 Hz) -126 dBm
  • The maximum output power of the transmitter, W 100 (at 50 MHz ~ 50 W)
  • IMD3 up to 40 dBm with signal pre-emphasis included
  • Built-in automatic antenna tuner
  • Dynamic range for blocking in the HF range, dB ~ 120
  • Dynamic range by IMD3, dB ~ 90
  • The range of supply voltages, ~ 198 … 240 V 50 Hz (from the AC mains)
  • The range of supply voltages, DC 12 … 14 V (battery)
  • The maximum current consumption, A 1.5 (from the AC mains)
  • Maximum current consumption, A 20 (from the battery)
  • Clock frequency RF A / D converter, MHz 122
  • The resolution of the RF A / D converter, bit 14
  • Types of radiation SSB, CW, AM and FM, digital views via computer
  • USB audio input / output. 24 kHz 16 bit
  • Panorama bandwidth, 12, 24, 48, 96, 192 kHz
  • Second survey receiver, MHz 0.01 – 60
  • Number of antenna inputs 2 pcs.
  • Dimensions of the device, mm 300 (controls) х260х130 ГхШхВ
  • Weight, kg 7

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Post-Launch Signals Received as Amateur Radio Heads to Moon

Wed, 05/23/2018 - 06:45

China has launched two microsatellites into a lunar transfer orbit. They launched as secondary payloads with the Quequiao relay satellite on May 20, in conjunction with the Chang’e 4 mission to the far side of the moon. Once in lunar orbit, DSLWP-A1 and DSLWP-A2 (DSLWP = Discovering the Sky at Longest Wavelengths Pathfinder) — also known as Longjiang-1 and Longjiang-2 — will test low-frequency radio astronomy and space-based interferometry. They carry Amateur Radio and educational payloads, but not a transponder. The Chang’e 4 mission will be the first-ever attempt at a soft landing on the far side of the moon.

Following deployment, signals from the DSLWP satellites were received by radio amateurs in Brazil, Chile, and the US, as well as by many others around the world. Harbin Institute of Technology (BY2HIT) developed and built the DSLWP spacecraft and is overseeing that mission. The two microsats eventually will enter a 300 × 9,000 kilometer elliptical orbit. Each satellite carries VHF/UHF SDR transceivers for beacon, telemetry, telecommand, and digital image downlink, plus a GMSK-JT4 repeater. Onboard transmitting power is about 2 W.

The astronomy objectives of the two spacecraft are to observe the sky at the lower end of the electromagnetic spectrum — 1 MHz to 30 MHz — with the aim of learning about energetic phenomena from galactic sources, using the moon to shield them from earthbound radio signals.

An open telecommand protocol on the spacecraft is designed to allow radio amateurs to send commands to take and download images. DSLWP-A1 downlinks are 435.425 MHz and 436.425 MHz; DSLWP-A2 downlinks are 435.400 MHz and 436.400 MHz. They will use 250/500 bps GMSK using 10 kHz wide FM single-channel data, with concatenated codes or JT4G. JT4 uses four-tone FSK, with a keying rate of 4.375 baud; the JT4G sub-mode uses 315 Hz tone spacing and 1,260 Hz total bandwidth.

The Queqiao communications relay satellite is required for the lunar far-side landing to facilitate communication with a not-yet-launched lander and rover because the moon’s far side never faces Earth, and some significant scientific measurements from the dark side of the moon require real-time contact with Earth. Queqiao was developed by the China Academy of Space Technology (CAST).

Harbin Institute of Technology Amateur Radio Club hopes that radio amateurs will get involved with the DSLWP mission, and QSL cards have been designed for different flight phases for amateurs who successfully receive telemetry or make contact.

Source:ARRL

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Review of SDRplay SDRduo Two-Tuner SDR Radio

Sat, 05/19/2018 - 08:49

“SDRplay has done it again with an outstanding and technically sophisticated software-defined radio that even at $280 is still a bargain. The video compares this with the previously-released RSP-1A. Have fun with software defined radios. And do serious experimentation, too! Covers 1 kHz to 2 GHz, and no, that’s not a misprint!”

(adsbygoogle = window.adsbygoogle || []).push({}); Antenna ALEXLOOP PREMIER May 02, 2018 in: Antenna No comments

The AlexLoop has long been the gold standard of the portable magnetic loop antenna. The AlexLoop Premier is the new and further enhanced version of the original AlexLoop with specially manufactured ULTRA LOW LOSS MONO BLOCK GOLD PLATED PL25... Read more

App - Mobile QRZ.com App for Android now in Beta Testing May 07, 2018 in: App - Mobile No comments

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Review Review of SDRplay SDRduo Two-Tuner SDR Radio May 19, 2018 in: Review No comments

“SDRplay has done it again with an outstanding and technically sophisticated software-defined radio that even at $280 is still a bargain. The video compares this with the previously-released RSP-1A. Have fun with software defined radi... Read more

Equipment VisAir – HF DSP Transceiver Standalone DDC DUC May 23, 2018 in: Equipment No comments

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Digital Modes Third Public Test of FT8 DXpediton Mode Deemed a Success May 09, 2018 in: Digital Modes No comments

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Alinco DJ-MD5T VHF/UHF 5W DMR HT

Fri, 05/18/2018 - 11:04

Alinco DJ-MD5T VHF/UHF 5W DMR DUal Mode Tier I/II HT

Features:

  • DMR Tier I and Tier II
  • 1.77 inch TFT color LCD
  • VFO/MR Switch
  • Output Power Selection (5W / 2.5W / 1W / 0.2W)
  • 4000 channel memory
  • SMS (Digital Mode)
  • Communication recording (Digital mode)
  • Individual / Group / All Call (Digital mode)
  • CTCSS / DCS / DTMF / 2Tone / 5Tone encode and decode (Analog mode)
  • Selectable battery-save
  • 1700mAh Li-ion battery
Specifications:
  • Frequency Range: 136-174MHz / 400-480MHz
  • Channel Capacity: 4000ch
  • Channel Spacing: 25KHz (analog) / 12.5KHz (digital/analog)
  • Operating Voltage: DC 7.4V
  • Frequency Stability: +-2.5ppm
  • Weight: 256G (with battery pack and antenna)
  • Power Output: 5W / 2.5W / 1W / 0.2W
  • Modulation (Digital): 7K60FXD / 7K60FXE
  • Modulation (Analog): 16K0F3E / 11K0F3E

(adsbygoogle = window.adsbygoogle || []).push({}); Antenna Jim W6LG Shows How He Connects 2 HF Antennas at the Same Time December 19, 2017 in: Antenna No comments

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Equipment Stryker SR-94 HPC – “Coming Soon” May 11, 2016 in: Equipment No comments

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Recent Posts CQ ham radio 2015 年 October – Japan October 15, 2015 No comments

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60 Meters… Let’s Go Dutch! – HamRadioNow February 03, 2016 No comments

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ARRL Audio News – July 22, 2016 July 22, 2016 No comments

  Read more

Recent Posts ARRL White Paper Provides Context for Recommended Governance Changes May 24, 2018 No comments

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Amateur Radio Transponders on Planned Chinese Satellites to Include HF May 23, 2018 No comments

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VisAir – HF DSP Transceiver Standalone DDC DUC May 23, 2018 No comments

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Post-Launch Signals Received as Amateur Radio Heads to Moon May 23, 2018 No comments

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Review of SDRplay SDRduo Two-Tuner SDR Radio May 19, 2018 No comments

“SDRplay has done it again with an outstanding and technically sophisticated software-defined radio that even at $280 is still a bargain. The vi... Read more

Alinco DJ-MD5T VHF/UHF 5W DMR HT May 18, 2018 No comments

Alinco DJ-MD5T VHF/UHF 5W DMR DUal Mode Tier I/II HT Features: DMR Tier I and Tier II 1.77 inch TFT color LCD VFO/MR Switch Output Power Selection (5W... Read more

Kenwood TS-890S 100W HF/50MHz

Fri, 05/18/2018 - 09:38
Kenwood TS-890S 100W HF/50MHz Transceiver 

More specifications and info will be posted here as it becomes available!

Full Down Conversion RX

  • H-mode Mixer
  • High C/N 1st LO
Built-in Roofing Filters
  • 500Hz / 2.7kHz / 6kHz / 15kHz (270Hz Optional)
7 Inch Color TFT Display
  • Roofing Frequency Sampling Band Scope
  • Auto Scroll Mode
  • Multi Information System

(adsbygoogle = window.adsbygoogle || []).push({}); Review Yaesu FT-DX3000 overview with G0TAN April 15, 2015 in: Review No comments

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Introduction to the RSPduo Dual tuner 14-bit 1kHz – 2GHz SDR

Fri, 05/18/2018 - 08:58

The RSPduo is a high performance dual tuner SDR.

Housed in a high quality steel enclosure, each tuner can operate individually anywhere between 1 kHz and 2 GHz with up to 10 MHz of bandwidth or both tuners can operate simultaneously anywhere between 1 kHz and 2 GHz with up to 2 MHz of bandwidth.

A high stability reference along with external clocking features makes this device ideally suited to industrial, scientific & educational applications

RSPduo Pricing – $279.95 (£239.94 inc VAT in EU) plus shipping – INCLUDES SDRuno!

RSPDUO DATASHEET INTRODUCTION DOCUMENT

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Antenna Light Beam Plus Antenna – LBP-20M February 10, 2015 in: Antenna No comments

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Alinco DJ-MD5T VHF/UHF 5W DMR HT May 18, 2018 No comments

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Yaesu FT-DX101D HF/50MHz 100W SDR

Fri, 05/18/2018 - 06:46
Yaesu FT-DX101D HF/50MHz 100W SDR 

Yaesu FT-DX101D HF/50MHz 100W SDR Reservation

** Get in line! Reserve yours today, risk free! **
This radio has NOT been approved by the FCC for sale and this is not an offer to sell this radio. Placing an order for this reservation entitles you to right of refusal on a first-come-first-serve basis when this radio becomes available for sale. Once the radio has received FCC approval and pricing has been announced, you will be sent an email to complete your order. In most cases, reservation holders are offered a lower price than those who place their order after the radio is released.

YAESU is excited to introduce a new High-Class HF/50MHz 100W Transceiver – FTDX101D and the first sample will be seen at Dayton Hamvention 2018.

The new FTDX101D is utilizing the latest SDR Technology and classified as our High-End HF line, the FTDX series, which amateurs have come to know represents quality.

A few of the remarkable features of the new FTDX101D are;

  • YAESU High-Class HF/ 50MHz 100W Transceiver
  • SDR Technology and Waterfall Display
  • Large Touch Panel precision color display
  • Active Band Monitor enables rapid band changes with LED illumination of the operating band
  • Independent control of the Main and Sub Bands allows effortless operation for the serious contester needing to move quickly between the amateur bands
  • High-Q VC Tuning Front-End
  • Main tuning dial for Main and Sub Band frequency control includes an Outer Dial for clarifier, VC tuning, fine tuning or custom settings.

As you may recall, the name “101” comes from Yaesu’s legendary-popular best seller FT-101 series. With all its strength, YAESU produced this new HF transceiver to carry on the tradition of high quality known from the original 101 series. The new FTDX101D will be certain to satisfy the variety of many amateur radio enthusiasts’ demands.

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BTECH UV-5X3 Handheld Tribander August 21, 2016 No comments

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Hytera AR-685 Handheld UHF, FM, DMR, GPS, 1 watt / 4 watts March 29, 2017 No comments

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FT8 Activity Bumping Up at Some Expense to Other Modes

Fri, 05/18/2018 - 05:22

Despite largely dismal HF conditions, there is no doubt that the recent FT8 digital protocol has made hams more enthusiastic about getting on the air. The mode has caught on so quickly that co-developer Joe Taylor expressed surprise last fall at the rapid uptake of FT8 for making contacts on HF bands. Judging by Logbook of The World (LoTW) data, more than 2.3 million FT8 contacts were uploaded in 1 month — a net gain of 1.2 million contacts on all modes over the same month last year, ARRL Radiosport Manager Norm Fusaro, W3IZ, said. Over the same period, activity in some of the other modes has declined.

“Year-to-date DXCC applications are up by 11% over the same period last year,” Fusaro said. “So far, we have processed 898 Worked All States (WAS) applications — a 72% increase over the same period last year. Of those applications 347 — or 39% — were FT8 endorsements. Application for VUCC are also up by 33% over 2017.”

Fusaro said that while some feel that FT8 is “taking over the world,” subsuming all other modes, that’s not the case. “Activity in the traditional modes of SSB and CW has decreased only slightly, by 10%,” he said. “The real decrease is in RTTY and PSK activity and in the other WSJT-X modes. I believe poor propagation would have cut into SSB and CW activity, regardless of the new mode.” Anecdotal reports support Fusaro’s hard numbers, with wall-to-wall signals surrounding the FT8 watering holes.

Late last year, Denny Berg, WB9MSM, achieved his goal of completing DXCC using FT8. It took him just 4 months.

“I can tell all of you that this mode is spreading like wildfire throughout all the HF bands,” Berg told The Daily DX at the time. He said he was able to work all states on FT8 in about 6 weeks of operating.

Taylor has characterized SSB and CW as “general-purpose modes” that are good for ragchewing, DXing, contesting, disaster communication, and other purposes. On the other hand, he has said, FT8 and the other protocols in the WSJT-X suite are “special-purpose modes,” designed for making reliable, error-free contacts using signals that may be too weak to work using more traditional modes — and sometimes even too far down in the noise even to hear.

Source:ARRL

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ARRL to Show Off Ham Radio at EAA AirVenture Oshkosh 2018

Wed, 05/16/2018 - 11:37

With support from member volunteers, ARRL will put Amateur Radio on display for visitors to EAA AirVenture Oshkosh 2018 — the giant, annual airshow July 23 – 29 in Wisconsin, organized by the Experimental Aircraft Association (EAA). The event attracted more than 10,000 aircraft and nearly 600,000 visitors in 2017 to enjoy aerobatics displays, informative programs, hands-on workshops, and diverse aircraft spanning all eras of flight.

“The cross-over between Amateur Radio operators and pilots, aviation enthusiasts, and air show attendees has a strong correlation,” said ARRL Central Division Director Kermit Carlson, W9XA, who is part of the volunteer team organizing the ham radio exhibit at AirVenture. “Attendees include many licensed and prospective Amateur Radio operators.”

ARRL’s exhibit will promote Amateur Radio to newcomers and inform all attendees of the similarly diverse technology and innovation enjoyed by both hams and pilots.

“Ham pilots are doing all sorts of things from the sky, including long-distance HF communications, aircraft tracking using APRS beacons, and search and rescue,” Carlson said. “Developing the capability to communicate from your aircraft to a ham on the ground is also fun!”

ARRL has posted a short survey that invites pilots who are radio amateurs to share their ideas for exhibiting at EAA AirVenture 2018. The ARRL display will build upon existing ham radio demonstrations at the show, including EAA Amateur Radio Special Event station W9ZL, organized annually by the Fox Cities Amateur Radio Club in Appleton, Wisconsin, and set up at the Pioneer Airport airstrip in Oshkosh. W9ZL will be on the air throughout the week of the Oshkosh air show.

Source:ARRL

(adsbygoogle = window.adsbygoogle || []).push({}); Review Unboxing the TYT TH-8600 Mini-Mobile Radio March 13, 2017 in: Review No comments

TYT’s newest addition to their analog radio line is the TH-8600, which is a full-color screen dual band mini-mobile radio. Outputting 25-watts on VHF and 20-watts on UHF, and with its compact size, this radio should be a good addition... Read more

Equipment Mizuho MX2 Handheld SSB/CW Transceiver – 144MHz June 11, 2015 in: Equipment No comments

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VHF Alinco DJ-MD5T VHF/UHF 5W DMR HT May 18, 2018 No comments

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Comparing the RFinder K1 and M1 Devices – Ham Radio 2.0: Episode 134 April 16, 2018 No comments

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Wed, 05/16/2018 - 07:18

The INRAD DMS-629 and DMS-650 microphones have been chosen by FlexRadio as the official desk microphones for use with all of our transceivers.  M629 or M650 microphone, DMS-1 heavy PTT desk stand and a detachable coiled cable that runs from the back of the base into the microphone jack on your radio.  These are sold as a complete package at $158 retail.

Plug the detachable coiled cable into the mic jack on your transceiver, and you’re ready to operate.  To use the microphones with any of the 3 conductor TRS + RCA phono, 8 pin Foster, or RJ-45 modular, plug in a different accessory cable.  Easy!  One detachable cable is included with the $158 purchase price.

The base is metal and weighs 2.5 pounds to keep it from sliding around or being knocked over easily on the desk.  Total weight of base and desk microphone, over 4 pounds.  Metal microphone body, standard 5/8 x 27 thread metal standpipe, rubberized microphone clip.  The circular rubber ring around the circumference of the metal standpipe for the mic clip is an internal shock mount for noise isolation.

Large push-to-talk switch on the base front.  To lock the PTT for those longer QSO’s, slide the silver slider switch to the left while the PTT switch is down.  To release, slide back to the right. 

Want a different on-air sound from a different INRAD microphone?  The M-series microphones on the base are also interchangeable.  To change from one mic to another, unplug the 3 pin XLR cable from the back of the mic and pull it off the clip.  Plug in the new mic, put it on the stand.  It’s that simple.

Alternatively, the M-series microphones can be purchased alone.  M-series microphones are supplied with a cable from 3 pin XLR to 1/8″ mono male jack that is used with M-series adapters to plug into the transceiver. 

 

$158.00 (adsbygoogle = window.adsbygoogle || []).push({}); Review Icom 7300 WSJT-X Combined With HRD and JT-Alert February 13, 2017 No comments

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Morse Machine – Android APP February 02, 2015 No comments

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Second Public Test of FT8 DXpedition Mode Demonstrates High Contact Rates Possible April 10, 2018 No comments

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Second Test of FT8 DXpedition Mode Set for April 7 April 03, 2018 No comments

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Cuba’s “Operation Meteor” will Involve Amateur Radio

Wed, 05/16/2018 - 06:51

Amateur Radio will have a role in Cuba’s soon-to-be-launched “Operation Meteor,” aimed at aiding the island nation in preparing for natural disasters. Among the new strategies under review for implementation are civilian first-aid training; assist and rescue missions; damage control, and large-scale needs assessment. The nationwide initiative aims to mitigate the impact of natural disasters, especially in rural areas, and safeguard life on the island, Lieutenant-Colonel Wilfredo Cobas said.

Operation Meteor will also work with Cuba’s radio and television services, the island’s communications system, and the Emergency Network of the Amateur Radio Federation of Cuba (FRC) to fine-tune their emergency responses. Alfredo Mesa Hormigó, CO8TVC, Information System Coordinator for the FRC’s Santiago affiliate, suggested that Operation Meteor will strengthen the capacity of the country and its provinces to face strong earthquakes, hurricanes, intense drought, fires, health, and technological disasters, and would enhance the communication system’s capabilities to face disasters in Cuba.

In 2017, Hurricane Irma affected 12 Cuban provinces, destroyed more than 150,000 homes, left 10 people dead, and caused some $13 million in damage.

Source:ARRL

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Morse Code Enables the Disabled : Ham Nation 350 May 10, 2018 No comments

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ARRL Asks FCC to Protect Amateur Radio Millimeter-Wave Bands May 09, 2018 No comments

ARRL has asked the FCC to avoid authorizing developmental technologies in two Amateur Radio bands above 95 GHz that some radio amateurs may not be una... Read more

Unboxing the TYT MD-UV380/390 Dual Band DMR HT

Wed, 05/16/2018 - 06:43

TYT has released a new Dual Band DMR Radio in the form of their classic MD-380, which they have deemed the MD-UV380. It looks the same, feels the same, and acts nearly the same, except with updated firmware and features, and having both bands for DMR.

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AMSAT Names Alan Johnston, KU2Y, as AMSAT Vice-President, Educational Relations May 14, 2018 No comments

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Software SmartSDR v2.2.8 Now Available May 15, 2018 No comments

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SmartSDR v2.2.8 Now Available

Tue, 05/15/2018 - 10:55

FlexRadio Systems announces the immediate availability of SmartSDR v2.2.8 for the FLEX-6000 Signature Series SDRs.  SmartSDR v2.2.8 is a General Availability (GA) release containing new features and fixes for SmartSDR for Windows, SmartSDR for Maestro, SmartSDR CAT and DAX.

SmartSDR 2.2.8 can be downloaded from the FlexRadio Systems web site. Please download and review the SmartSDR v2.2.8 Release Notes prior to installing SmartSDR v2.2.8 to ensure an optimal software installation experience.

A software license for the FLEX-6000 is required to run SmartSDR v2.2.8.  If your FLEX-6000 has been authorized to run a previous version of SmartSDRv2, re-authorization is not required.

All owners of the Limited Edition (LE) FLEX-6700 and FLEX-6500 SDRs or radios sold after May 19, 2017, have been pre-authorized for SmartSDR v2 and do not require the purchase of a SmartSDR v2 license.  To run SmartSDR v2 on all other radios requires the purchase of a software license for the radio.

Obtaining and validating a license for your FLEX-6000 software defined radio is a simple process.  Once the radio and client have network access to the Internet, just load any version of the SmartSDR v2 software on your PC or Maestro.  In the radio chooser, if a radio requires a license, a status message will indicate a license is required before connecting to the radio and updating the firmware.  A “Buy” button is also presented so that you can conveniently purchase a SmartSDRv2 license using our Online Store.  Please see details below regarding purchasing a SmartSDR software license for your radio.

The following highlights are SmartSDR specific items:

New Program Icons: Due to the current marketing effort associated with the rebranding of FlexRadio, the SmartSDR for Windows, SmartSDR CAT and DAX program icons have a new look and color scheme.

Performance Improvements:  Firmware modifications drastically improved RX->TX->RX switching speed along with other internal performance enhancements.

Slice “Flag” and Panadapter Enhancements: Added peak indicator to the S-Meter.  Added the ability to switch from dBm to S units for the S-meter digital readout by clicking on the readout.  When a slice flag is minimized, the frequency readout is displayed. The area below the spectrum display is now color filled with user-selectable colors and intensity.

Enabling Split Mode Made Easier: On the Slice “flag” there is a SPLIT button that makes creating a new “split” (child) slice from the parent slice.  Clicking on the SPLIT indicator will remove the split child slice.  The Split command has also been added to the FlexControl.

Modified TURF Files: The TURF files for Belgium (EU04) expanded the 160m band allocation to 1.810 – 2.0 MHz, for the Netherlands (EU13), the new IARU Region 1 60m allocations have been added and for IARU Region 2, transmit is now allowed on the frequencies used by the Caribbean Disaster Emergency Response Agency.
 
Default Microphone Profile Change: The Default mic profile now uses the FMH-2 mic profile rather than the older FHM-2 profile to improve the “out of box experience” when using the supplied hand mic.

Persistence and Profiles: Fixed persistence issue when restoring XVTR Slices.  Underscore character now displays properly in TX Profile Name. Profiles are not properly sorted in alphabetical order (not case sensitive).  Profiles are now displayed after import without requiring a reboot.

Boot up logic fixed for M Model Radios: Inconsistencies with M model radios not booting directly to SmartSDR and showing the Select a Version Screen have been resolved.

CAT User Interface Changes: The user interface has been enhanced to show the radio connection state and display the connected radio. A Settings icon in the menu bar of the application will allow you to easily configure the application startup parameters.

CAT and DAX No Longer Automatically Start when the PC is Booted: A change was made to the automatic startup behavior of CAT and DAX.  They no longer start when the PC is booted, reducing the network load on the radio when SmartSDR for Windows was loaded on multiple PCs and neither of the applications was actively in use.  CAT and DAX now start when SmartSDR for Windows is started and closed when SmartSDR for Windows is closed (the default behavior).  You can change this behavior and not have CAT and DAX automatically start if you desire to manually start the applications.

AGC Applied to AM and SAM modes after Demodulation:  Previously in AM mode, the AGC was before the demodulation stage and would act on carrier changes rather than changes in the demodulated signal.  This issue has been corrected.

Popout Window Enhancements: Popped out window size and placements are now properly remembered when SmartSDR is shut down.  The CWX F1-F12 macros now work properly when the focus is on a popped out Panadapter or TX Panel.

CW Pitch Frequency Improvements: The frequency of the CW Pitch can now be changed in 10 Hz increments.

RIT/XIT Adjustment Enhancement: For the M models, when changing RIT or XIT, the frequency is now left on 50 Hz boundaries.

SmartLink Login Improvements: Additional changes were made to the SmartLink login process to ensure changes to the Auth0 authentication protocol will not result in the inability to login to your SmartLink account.

Diversity Reception Enhancement: For radios capable of Diversity reception, if using a FLEX-6700 with a Maestro or a FLEX-6600M, the AF knob now changes diversity (child) slice volume too.

Bug Fixes: There have been numerous bug fixes in this release.  Please see the SmartSDR ChangeLog for a complete listing.

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Antenna NTE Low Temp Solder Wire Connections March 06, 2018 in: Antenna No comments

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VHF Kenwood TM-V71A Full Dual Bander 144/430MHz February 06, 2015 in: VHF No comments

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Equipment Receive Antenna Phasing Systems DXE-NCC-2 December 07, 2016 in: Equipment No comments

Imagine adjusting the controls to knock out strong interfering stations or noise and then being able to copy and log that weak DX station. After successfully combining your antennas with the advanced phasing capabilities of the NCC-2, this... Read more

Review KB8O Demonstrates Receive 4-Square on 160m December 15, 2016 in: Review No comments

Jay Pecora, KB8O from Elyria, OH demonstrates his DX Engineering Receive Four-Square system on 160 meters. Read more

App - Mobile Hamradio Line Loss Calculator for iOS devices June 06, 2017 in: App - Mobile No comments

Coax Line from Federico Romano, IW2MVI is a simple and fast app that allow you to calculate the loss of your coax line and calculate power output from your antenna system.  Select your coax from up to 80 different types, specify coax length... Read more

“Last Man Standing” Moving to Fox Network

Mon, 05/14/2018 - 11:39

There will be a season 7 of the TV show “Last Man Standing” in which Tim Allen — a real radio amateur — plays Mike Baxter, KA0XTT. The primary difference is that the show now will appear on the Fox Network. A year ago, ABC axed “Last Man Standing,” which had attracted more than 8.3 million viewers. The network did not own the show but was licensing it from 20th Century Fox.

John Amodeo, NN6JA, has been a co-executive producer, producer, or supervising producer of the comedy and was instrumental in Allen’s getting his ham radio license in 2014; more than 2 dozen members of the crew were also inspired by the show’s Amateur Radio component to get licensed.

Allen tweeted news of the Fox reboot on May 11. “Thanks to all you guys for the support,” Allen said. “We are back.” In a statement, Allen said, “When I heard the offer to create more episodes of ‘Last Man Standing,’ I did a fist pump so hard I threw my back out. It’s the fans! I could not be more grateful for the fans who wrote petitions and kept up the passion and incredible support for the show.”

Source:ARRL

(adsbygoogle = window.adsbygoogle || []).push({}); Antenna W3DZZ Multi-band Antenna 80-40-20-15-10m January 14, 2015 in: Antenna No comments

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App - Mobile Ham Radio Prefixes – Android App October 12, 2014 in: App - Mobile No comments

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AMSAT Names Alan Johnston, KU2Y, as AMSAT Vice-President, Educational Relations

Mon, 05/14/2018 - 11:28

Alan Johnston, KU2Y, will become AMSAT’s Vice-President, Educational Relations, AMSAT President, Joe Spier, K6WAO, has announced. “The subject of educational outreach is critical for the mission of AMSAT,” Spier said. “AMSAT continues creating structure for fulfilling our mission component regarding education with projects such as the CubeSat Simulator, ARISS, and outreach to primary, middle, high school, and university programs.” Johnston will help AMSAT to establish and coordinate an education initiative program and serve as its senior point of contact with outside organizations regarding educational outreach, Spier said.

Johnston is an instructor at Rowan University in the Electrical and Computer Engineering Department and interested in using Amateur Radio satellites to teach various engineering and scientific topics. — Thanks to AMSAT News Service 

Source:ARRL

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The Remarkable Retevis Ailunce HD1 DMR Handheld

Fri, 05/11/2018 - 07:10

Ailunce HD1 Dual Band DMR Digital DCDM TDMA Waterproof Two Way 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  (Dont 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

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RF Loss – The Doctor Will See You Now!

Fri, 05/11/2018 - 06:59

“RF Loss” is the topic of the latest (May 10) episode of the “ARRL The Doctor is In” podcast. Listen…and learn!

Sponsored by DX Engineering, “ARRL The Doctor is In” is an informative discussion of all things technical. Listen on your computer, tablet, or smartphone — whenever and wherever you like!

Every 2 weeks, your host, QST Editor-in-Chief Steve Ford, WB8IMY, and the Doctor himself, Joel Hallas, W1ZR, will discuss a broad range of technical topics. You can also e-mail your questions to doctor@arrl.org, and the Doctor may answer them in a future podcast.

Enjoy “ARRL The Doctor is In” on Apple iTunes, or by using your iPhone or iPad podcast app (just search for “ARRL The Doctor is In”). You can also listen online at Blubrry, or at Stitcher (free registration required, or browse the site as a guest) and through the free Stitcher app for iOS, Kindle, or Android devices. If you’ve never listened to a podcast before, download our beginner’s guide.

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Space Station Digital Amateur Television Signal Not Being Seen on the Ground

Fri, 05/11/2018 - 06:44

The signal from the digital amateur television (DATV) transmitter aboard the International Space Station (ISS) cannot be detected on the ground, Amateur Radio on the International Space Station (ARISS) has reported. The unit indicates that it is functioning, however. So far, ARISS has been at a loss to pin down the problem.

“A series of steps are currently being undertaken to try to diagnose the problem,” a May 10 announcement from ARISS said. “However, if an actual failure occurred, only a ground-based evaluation will fully diagnose the problem. The ARISS International team is working diligently to bring [the system] back to full operation as soon as practical.” The ISS DATV system is known variously as “HamVideo” and “HamTV.”

ARISS said it has begun coordination with its space agency partners and sponsors to “expeditiously troubleshoot the issue onboard and, if necessary, troubleshoot and repair the device on the ground.”

The DATV transmitter has proved to be a valuable educational asset that ISS crew members have enjoyed employing over the past couple of years during ARISS school and group contacts. Astronauts Tim Peake, KG5BVI; Paolo Nespoli, IZ0JPA; and Thomas Pesquet, KG5FYG, in particular, made routine use of the DATV system to enhance the ARISS ham radio contact experience for students and educators.

Ground stations in Australia and Europe have functioned to receive and distribute the Amateur Radio TV signal from the ISS. Ground stations are under development in the US. Several hams in Japan have set up ground stations that have received the DATV signal from the ISS.

Peake inaugurated formal use of the DATV system for a 2016 ARISS school contact with students at a Royal Masonic School, in Rickmansworth, England, home of GB1RSM. The DATV system, located in the Columbus module of the ISS, allowed students at the school to see as well as listen, as Peake, operating as GB1SS, answered their questions about life in space. The one-way DATV downlink took place near 2.4 GHz, while the two-way FM audio component was maintained on 2 meters.

The DATV system was first proposed more than 17 years ago. The IK1SLD ground station received the DATV signal. It was commissioned during a series of tests in 2014.

Source:ARRL

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