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Updated: 2 hours 15 min ago

Measures The Loss In Coax Connectors and 100 Feet of RG8X by W6LG

Sat, 01/20/2018 - 18:36

Jim W6LG uses a signal generator and a panadapter to measure the loss in 30 coax connectors at 14 and 52 mhz down to a fraction of a db. You might be surprised at the results.

(adsbygoogle = window.adsbygoogle || []).push({}); Antenna Momobeam MB9 12/17/30 Antenna for Warc Bands November 13, 2014 No comments

  New Momobeam MB9 12/17/30 antenna for warc bands without compromises. The MB9 12-17-30 is a big and solid fullsize antenna for the WARC bands o... Read more

The Yagi-Uda Antenna October 01, 2015 No comments

A Yagi-Uda antenna, commonly known simply as a Yagi antenna, is a directional antenna consisting of multiple parallel dipole elements in a line,[1] us... Read more

How to install a Horizontal Waller Flag antenna at 150 foot October 01, 2015 No comments

The Horizontal Waller Flag antenna is a produced and sold by Carlos N4IS http://top-beam.com/ The boom on this one is 44 feet long. Interlaced with th... Read more

OL7M installed monster G0KSC 28MHz system December 28, 2015 No comments

After one year in the making, the contest team at OL7M have finished the construction and installation of 4 x 6 element 28MHz G0KSC OWA Yagis. This in... Read more

80m & 40m DUAL BAND HOMEBREW 2 EL SHORT BOOM YAGI by VE6WZ January 21, 2015 No comments

  “The VE6WZ QTH is a small city lot, so achieving gain on 80m has been difficult.  A vertical 4 sq. wire array  was considered but would h... Read more

VHF Alinco Released a new radio Today – DJ-R200D December 05, 2016 No comments

Alinco Corporation December 6, 2016, announced the latest model of the 420 / 440MHz band specified low-power handheld machine equipped with a super mu... Read more

DMR portable SPH6000 Serial – Samhoo March 02, 2015 No comments

  Samhoo is delighted to formally launch Digital Trunking Portable SPH6000 product serial, which is fully compliant with ETSI DMR Tier 3 & PD... Read more

Icom IC-2730 December 04, 2014 No comments

  Icom proudly announces the debut of the new VHF/UHF dual band transceiver, IC-2730A/2730E. It is the successor of the long selling IC-2720H ser... Read more

ICOM IC-80AD March 10, 2015 No comments

Switchable VHF/UHF dual bander The IC-80AD provides VHF/UHF dual band capabilities (one band at a time) via a simple band switching system. Wideband r... Read more

Wouxun KG-UV9D+ ProPack UnBoxing April 26, 2016 No comments

Wouxun KG-UV9D     Read more

Equipment HF Linear 2KW HF2015DX – Chinese by BG5EFD May 06, 2016 No comments

RF Linear amplifier  coverd 1.8-30MHz WARC amateur bands , using Chinese FU728F ceramic tetrodes  working at  Class AB1 driving power:5-50W  output:20... Read more

ColibriNANO USB SDR Receiver March 19, 2017 No comments

The New ColibriNano takes USB dongle SDR receivers to a new level. This is a direct sampling, high quality SDR receiver covering 100 kHz to 55 MHz wit... Read more

Introduces the Limited Anniversary Edition TS-590SG September 08, 2017 No comments

JVCKENWOOD Corporation (JVCKENWOOD) will release TS-590SG70, an HF/50 MHz special specification transceiver with the TRIO logo under the KENWOOD brand... Read more

New ! Band decoder with another TRX control output for Arduino January 21, 2016 No comments

Allows you to read the frequency or band data from your transceiver and switch output relay(s) by the defined rules . Another feature allows you to se... Read more

The Yaesu FT-891 | Specifications May 23, 2016 No comments

   Yaesu FT-891 HF/50MHz 100W All Mode Transceiver – FT-891 ·         Rugged construction in an ultra-compact body 6.1” x 2.0” x 8.6” (152 x 52 x... Read more

App - Mobile HF Beam Antenna Calculator for Iphone and Ipad January 06, 2015 No comments

  Antenna Calculator The Maidenhead & HF Beam Antenna is a useful utility to calculate the the Maidenhead LOCATION as well as HF Elements’ s... Read more

DroidRTTY – RTTY for Ham Radio App Android January 08, 2015 No comments

  Ham Radio App DroidRTTY is an application to decode and encode Ham Radio RTTY with the build in microphone/speaker or wired to your radio. A wa... Read more

Wizkers:Radio APP May 27, 2016 No comments

Wizkers:Radio is a controller for various Amateur Radio equipments. At the moment, it supports several Elecraft radios and amplifiers, as well as the... Read more

Updated Android Digital QST App Now Available July 28, 2016 No comments

A completely rebuilt digital QST app for the Android platform now is available from publisher Nxtbook Media, which responded to readers’ frustrations... Read more

Koch Morse Trainer Pro – Android App January 12, 2015 No comments

  Take your morse code to the next level with Koch Morse Trainer Pro. The only trainer that supports prosigns (procedural signals) and non-english cha... Read more

Review Icom IC-7300 Morse Code and Display Overview [ Video ] February 02, 2016 No comments

    Icom revealed their first Software Defined Radio (SDR) HF transceiver, the IC-7300, on Saturday, August 22nd 2015, at the Tokyo Ham Fair... Read more

Luiton LT-898UV Ultra Portable Go Box Kit – Ham Radio Q & A November 11, 2016 No comments

“You may have seen my previous video in which I reviewed the Luiton (Leixen) LT-898UV 10 watt mobile radio. In this episode I build an ultra por... Read more

Icom IC-9100 – QST Review September 14, 2015 No comments

Icom IC-9100 Mark J. Wilson, K1RO, k1ro@arrl.org Reviewed by Rick Lindquist, WW3DE National Contest Journal Managing Editor ww3de@arrl.org The only re... Read more

Unbox Radioddity GD-55 and Baofeng DM-5R by KE0OG January 07, 2017 No comments

“*NOTE* I take very seriously the comments about incompatibility between these radios and DMR repeaters. I will look into this closely. (Radiodd... Read more

KT-8900D Unboxing December 20, 2016 No comments

QYT KT-8900D Dual Band Quad-standby Colorful Screen Mini Mobile Vehicle-mounted Radio TX & RX 136-174MHz & 400-480MHz 200 Channels FM Radio Fe... Read more

C3S-JK – 2 Elements on 20M / 2 Elements on 15M / 2 Elements on 10M / 12 Foot Boom

Sat, 01/20/2018 - 14:08

The C3S-JK (Tribander) has been re-designed, optimized & Improved from the very popular Force 12 Tribander

Here are the important changes/features from the classic design ….

1. The feed point for 20M, 15M & 10M are connected using a transmission line, the same way as the JK-MidTri & JK-BigTri.

2. The mast mount position is right at the center of the antenna at 72″.

3. The overall gain and swr on all bands is consistent & provides excellent performance.

Price : US$795.00 **

Approx wt. = 39 lbs

Wind Area “C” = 5.82 Sq. Ft

                  “G” = 10.47 Sq. Ft

Projected Area  = 8.72 Sq. Ft

Max Wind Speed = 100 Mph

Max Turning Radius = 19.5 Ft

Feedpoint = Direct 50-Ohm

(adsbygoogle = window.adsbygoogle || []).push({}); VHF Vitai VT-5188 January 30, 2015 No comments

  Vitai VT-5188 1. Frequency Range: VHF: 136-174MHz/245-245.9875Mhz                     UHF: 400-480MHz 2. Output Power: VHF: 10W/25W/60W        ... Read more

Alinco has just announced a New 144/440MHz Mobile May 17, 2016 No comments

Alinco DR-735T Dual-Band 2M/440 Mobile Transceiver TX: 144-147.995 and 430-449.995 MHz RX: 108-173.995 and 400-479.995MHz + Air 1000 memories. Output:... Read more

Icom IC-2730 December 04, 2014 No comments

  Icom proudly announces the debut of the new VHF/UHF dual band transceiver, IC-2730A/2730E. It is the successor of the long selling IC-2720H ser... Read more

RatPak VHF – Six antenna 1 kW remote switch for 2 meters VHF band without controller, N-type connectors May 17, 2017 No comments

The Array Solutions RATPAK System – Remote VHF Antenna Switch Features Six antennas to one feed line All Aluminum WX proof and RF proof construc... Read more

What Frequency Do I Use On 2 Meters (144MHz )? September 03, 2015 No comments

You’ve just purchased your first handheld transceiver and have been chatting with both old and new friends around town on the 2 Meter band. There are... Read more

Equipment Elecraft KPA500 Compact 160-6 M Solid State Amplifier April 17, 2015 No comments

    500+ Watts in a compact package the size of the Elecraft K3. We are proud to introduce the KPA500:  A 500-watt solid-state amp that inte... Read more

UNIDEN UBCD3600XLT DIGITAL SCANNER RECEIVER 25-1300MHz January 31, 2017 No comments

UNIDEN UBCD3600XLT FEATURES, FUNCTIONS AND SPECIFICATIONS: • Favorites Scan – Allows you to organize your Systems into Favorites Lists. The scanner wi... Read more

SmartLink™ for Remote Access – FlexRadio May 12, 2017 No comments

  Robust, Secure Remote Access to any FLEX-6000 – Operate from Anywhere Simple Click connect. It’s that simple. SmartLinkTM is designed fro... Read more

Audio Amplied Speaker Microphone designed for the Elecraft KX 2 and KX3 transceivers June 06, 2017 No comments

Elecraft radios have acheived excellence in quality and design for the fast growing market of QRP Portable Operators. The AlexMic is a Audio Amplied S... Read more

EMTRON DX-3SP – HF Amplifier ( 4.5Kw ) January 10, 2015 No comments

  The “Big Gun” is getting even bigger, with the new DX-3SP! With over 4000 Watts CW and more then 4500 Watts SSB, this QRO muscle amp is... Read more

Digital Modes JTDX – Videos and Guides – FT8- JT65 – JT9 – T10 – WSPR January 08, 2018 No comments

  JT DX JT65 – JT9 – T10 – FT8 – WSPR Guides JTDX_User_Manual_EN_2018_01_08.pdf – (English language by VK7YUM with... Read more

JT-DX 18.1.0.30 with FT8 mode ! Released December 08, 2017 No comments

JT-DX Download JTDX means “JT & T modes for DXing”, it is being developed with main focus on the sensitivity and decoding efficiency,... Read more

New Digital Modes Changing Complexion of Bands and Perhaps of Ham Radio November 02, 2017 No comments

The wave of software-based digital modes over the past several years has altered the atmosphere of the HF bands. Some suggest the popularity of modes... Read more

Everybody’s Trying the New FT8! November 02, 2017 No comments

“FT8 is the newest weak-signal mode from Joe Taylor, K1JT, and friends. It operates very much like JT65 but is four times faster and more automa... Read more

Goodbye FT8, Hello Olivia, The Magic HF Digital Mode October 24, 2017 No comments

“So many people have started using FT-8 on HF, but they leave all the other modes to die off, like Olivia. Olivia isn’t new, but it offers... Read more

Review ID-4100A vs ID-880H Smackdown August 01, 2017 in: Review No comments

ID-4100A  VHF/UHF Dual Band D-STAR Transceiver Specifications General Frequency coverage TX RX 144–148, 430–450 MHz 118–174, 230–550 MHz*  *Guaranteed range 144–148, 430–450 MHz Type of emission F2D, F3E, F7W Mode DV, FM, FM-N, AM (RX only)... Read more

News FCC Announces Plans for Partial Government Shutdown January 19, 2018 No comments

The FCC has issued a brief statement regarding its plans in the event of a partial government shutdown, which could start on January 20. “In the event... Read more

New Chinese Zhou Enlai Student Satellite Set to Launch January 19, 2018 No comments

The 2U Zhou Enlai CubeSat, developed with primary and middle school students in China, is expected to launch on January 19. The satellite is named aft... Read more

AX Prefix will be on the Air for Australia Day January 18, 2018 No comments

The Australian Communications and Media Authority (ACMA) automatically allows all radio amateurs to substitute their normal VK callsign prefix with th... Read more

Permanent WSPR beacon in Antarctica Now on the Air January 18, 2018 No comments

The DP0GVN WSPR now is in operation from the German Neumayer III Research Station of the Alfred Wegener Institute for Polar and Marine Research. The i... Read more

Department of Defense Interoperability Communication Exercise Deemed a Success January 18, 2018 No comments

A November 2017 Department of Defense (DoD)-sponsored communications interoperability exercise involving Amateur Radio was a success, according to inf... Read more

Interview VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios January 16, 2018 No comments

Michael Walker, VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios that are about to be released, and some cool new features they... Read more

A Note to Members from ARRL President Rick Roderick, K5UR January 15, 2018 No comments

In the last few weeks, the ARRL’s Board of Directors has been the subject of an organized misinformation campaign. It is being orchestrated by a group... Read more

Fox-1D Amateur Radio CubeSat Launches Successfully, Now Designated as AO-92 January 15, 2018 No comments

Right on schedule at 0359 UTC on January 12, the solid-fueled first stage and ground-lit strap-on boosters of the Indian Space Research Organisation (... Read more

Ham radio CubeSat launch success January 13, 2018 No comments

CubeSats carrying amateur radio payloads were among the 31 satellites successfully launched on January 12 at 0359 UT on the ISRO PSLV-C40 mission from... Read more

FCC Cites Auto Dealership for Causing Harmful Interference to Cell Phone Site January 10, 2018 No comments

The FCC Enforcement Bureau called on a North Dakota auto dealership “to stop operating devices that are causing interference to licensed radio operati... Read more

FCC Announces Plans for Partial Government Shutdown

Fri, 01/19/2018 - 15:52

The FCC has issued a brief statement regarding its plans in the event of a partial government shutdown, which could start on January 20.

“In the event of a partial government shutdown, because of available funding, the Federal Communications Commission plans to remain open and pay staff at least through the close of business on Friday, January 26,” the FCC said.

This means the FCC will continue to accept and process Amateur Radio license applications and grants at least for another week. During the 16-day 2013 government shutdown, the FCC retained eight employees “to conduct interference detection, mitigation, and disaster response operations.” Only one “senior management official” was left in the Wireless Telecommunications Bureau — which oversees Amateur Radio.

Source:ARRL

(adsbygoogle = window.adsbygoogle || []).push({}); Antenna A Poor Man Antenna Analyzer by GM3VLB December 15, 2014 No comments

A Poor Man Antenna Analyzer  by André Saunders, GM3VLB – Read .pdf File in adobe reader Link 1   or Link 2 Also Visit: http://www.gm3vlb.com/... Read more

MONSTER YAGI FOR 20M December 03, 2015 No comments

A 5 element wide spaced yagi for the 20m long path to Europe was installed at ZL6QH in May 2005. A photo of this “monster” antenna is show... Read more

WSPRLite first impressions – Antenna Performance Analysis System December 03, 2016 No comments

Edmund M0MNG gives a ‘first impressions’ unscripted review of a new product. The WSPRlite is available from SOTAbeams and is proving very... Read more

Antenna Dinamica 3el Yagi 6 to 40 meters February 15, 2015 No comments

Price 2790  Euro See More Antenna Dinamica: Link     Read more

Handheld HF System – Elecraft KX3 and a AlexLoop Antenna – Antenna Description June 17, 2016 No comments

“Handheld HF System – Elecraft KX3 and a AlexLoop Antenna This is my first try no make a Magnetic Loop to be integrated to the Elecraft KX... Read more

Review Debut of the TYT MD-2017 Dual Band DMR HT May 29, 2017 No comments

Double the fun of digital ragchews with the TYT MD-2017 Dual Band DMR Digital Two Way Radio! The MD-2017 takes the clarity and full quieting of digita... Read more

Universal Radio brings you the new Yaesu FT-891 HF transceiver November 08, 2016 No comments

  Amateur Radio \ Brochures \ HF/Satellite Transceivers and Amps FT-891 Brochure  ( 1.76 MB ) Amateur Radio \ Manuals \ HF/Satellite Transceivers... Read more

Kenwood TH-D74 [ APRS SETUP ] September 04, 2016 No comments

Kenwood TH-D74 Read more

mcHF SDR QRP RS-918 Review August 30, 2017 No comments

RS-918SSB Main Features Spectrum Dynamic Waterfall Display Multiple Working Modes: Receive,Transmit,Tune,VFO,SPLIT DSP Digital Signal Processing Noise... Read more

Keys and Keyers – ARRL The Doctor is In [PodCast] August 04, 2017 No comments

Read more

Equipment DX Engineering UT-KIT4 Complete Coax Cable Tool Kits DXE-UT-KIT4 January 05, 2016 No comments

DX Engineering DXE-UT-KIT4 Complete Coax Cable Tool Kits are cost-saving tool kits contained in a handsome, convenient carrying case. They are designe... Read more

Icom AIR. LAND. SEA. [ Brochure ] September 12, 2016 No comments

Read more

Yaesu SP-9000 Speakers October 01, 2015 No comments

Speaker Type:Base station   Speaker Impedance:8 ohms   RF Shielding:Yes   Speaker Audio Filters:Yes   Subwoofer Included:No   Volume Control:No   Tone... Read more

EXPERIMENTAL SWRX January 26, 2017 No comments

The Stampfl receiver is still in its experimental stadium and is not, comparable to a KWZ-30, Reuter or Perseus receiver. But an Assembly kit for the... Read more

ICOM IC-DPR30 September 21, 2016 No comments

ICOM IC-DPR30 Smallest and lightest ever ※ 1 , built-in antenna, Bluetooth ® support. New release of the transceiver IC-DPR30 that can be used to styl... Read more

Review The Coax Connection: Interview with Ray Nelson, N1MPD (#AD 83) July 23, 2017 No comments

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MFJ-269C Testing Coax Cable Faults and Length April 28, 2017 No comments

Read more

Apache Labs Anan 8000DLE at ML&S – Overview May 11, 2017 No comments

The ANAN-8000DLE HF & 6M 200W SDR Transceiver meets and exceeds the requirements of even the most discerning Amateur Radio Operator, it is based o... Read more

“S-Units” is the topic of the episode of the “ARRL The Doctor is In” August 24, 2017 No comments

S-Units” is the topic of the current (August 17) latest episode of the “ARRL The Doctor is In” podcast. Listen…and learn! Sponsored by DX Engine... Read more

Icom IC-7300 Morse Code and Display Overview [ Video ] February 02, 2016 No comments

    Icom revealed their first Software Defined Radio (SDR) HF transceiver, the IC-7300, on Saturday, August 22nd 2015, at the Tokyo Ham Fair... Read more

App - Mobile Pocket Radio Android App ( TX and RX ) January 02, 2015 No comments

This is an Android application used to remotely control several HAM radio  – any CAT enabled transceiver over Bluetooth, USB/Serial or with secu... Read more

Remote Vacuum Relay Switch, RK-314 September 12, 2016 No comments

Features       The RK-3xx series of switches uses vacuum relays. It is designed to switch coaxial lines in RF systems operating up to 5 kW continuous... Read more

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

“This page converts text into a morse code ringtone playable on most mobile phones. If your phone can play ‘polyphonic’ or ‘po... Read more

RS-MS1A – Remote Control Android App January 30, 2015 No comments

  Ray Novak and George Thomas show you how to control the ID-51A with the RS-MS1A Android app.   Read more

Updated Android Digital QST App Now Available July 28, 2016 No comments

A completely rebuilt digital QST app for the Android platform now is available from publisher Nxtbook Media, which responded to readers’ frustrations... Read more

News FCC Announces Plans for Partial Government Shutdown January 19, 2018 No comments

The FCC has issued a brief statement regarding its plans in the event of a partial government shutdown, which could start on January 20. “In the event... Read more

New Chinese Zhou Enlai Student Satellite Set to Launch January 19, 2018 No comments

The 2U Zhou Enlai CubeSat, developed with primary and middle school students in China, is expected to launch on January 19. The satellite is named aft... Read more

AX Prefix will be on the Air for Australia Day January 18, 2018 No comments

The Australian Communications and Media Authority (ACMA) automatically allows all radio amateurs to substitute their normal VK callsign prefix with th... Read more

Permanent WSPR beacon in Antarctica Now on the Air January 18, 2018 No comments

The DP0GVN WSPR now is in operation from the German Neumayer III Research Station of the Alfred Wegener Institute for Polar and Marine Research. The i... Read more

Department of Defense Interoperability Communication Exercise Deemed a Success January 18, 2018 No comments

A November 2017 Department of Defense (DoD)-sponsored communications interoperability exercise involving Amateur Radio was a success, according to inf... Read more

Interview VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios January 16, 2018 No comments

Michael Walker, VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios that are about to be released, and some cool new features they... Read more

Icom IC-7850/7851 Firmware Update (Version 1.2)

Fri, 01/19/2018 - 12:28

Icom have released a firmware update for the IC-7850/7851 HF Amateur Radio transceivers.

The firmware update provides the following improvements:

• A combination of [MIC] and [USB] is now selectable for the Modulation input connector selections in the SET MODE.
• The optional RC-28 directly connected to the IC-7850 or the IC-7851 can now be used as a desktop dial.
• Other performance improvements.

This firmware can be downloaded from the following URL from the Icom Inc website:

www.icom.co.jp/world/support/download/firm

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Antenna 144MHz 2m Portable Yagi VHF Beam Antenna by M0UKD February 12, 2015 No comments

  144MHz 2m Portable Yagi VHF Beam Antenna by M0UKD Read Full Article:         Read more

Portable 2 element 6m beam October 03, 2015 No comments

Over the years we have been asked numerous times for a really lightweight portable 6m beam. Building on over a decade of experience making and marketi... Read more

40 Meters 4-element Wire Yagi by VE3VN December 29, 2014 No comments

Read great article from VE3VN – 40 Meters 4-element Wire Yagi : Read more

How High should my Dipole Antenna be? January 19, 2015 No comments

Dipole Antennas – the Effect of Height Above Ground I frequently hear the question: how high should my dipole be? Or alternatively, will my dipo... Read more

Antenna Rotator System ARS-USB Azimuth December 01, 2014 No comments

  Antenna Rotator System is the most popular and universal engine management antenna rotator. With this new generation that includes a USB port,... Read more

VHF Yaesu FT-2980R 80W 2M FM Mobile Transceiver September 01, 2017 No comments

Yaesu FT-2980R 80W FM 2M Mobile Transceiver As its model name suggests, the new FT-2980R arrives with the solid feature configuration and mechanical t... Read more

DMR portable SPH6000 Serial – Samhoo March 02, 2015 No comments

  Samhoo is delighted to formally launch Digital Trunking Portable SPH6000 product serial, which is fully compliant with ETSI DMR Tier 3 & PD... Read more

144MHz Two-way Trans-Atlantic Beacon (IO51dn) EI2DKH April 25, 2015 No comments

  ” This page contains information and reception reports for the IRTS 144MHz two-way Trans-Atlantic Beacon operated on behalf of the Irish... Read more

Icom Launch New IC-A220T 8.33kHz Air Band Panel Mount VHF Radio December 01, 2016 No comments

The IC-A220T, Icom’s next generation 8.33kHz* air band panel mount transceiver, is now TSO / ETSO approved** and available for sale. The long awaited... Read more

JUENTAI JT-K10A VHF/UHF 10 Watts October 14, 2015 No comments

JUENTAI JT-K10A    JUENTAI JT-K10AT Function: 01. Outpower: 10W 02. Adopting newest polymer Li-ion battery 03. Adopting imported PC material in case t... Read more

Equipment 12×4 modular Antenna switch KIT September 05, 2016 No comments

Main functions: Always used one same – three to one – module. Put together up to four module expand up to 12 inputs. Available add same mo... Read more

FlexRadio 1500W Solid State Amplifier May 26, 2016 No comments

The Power Genius XL is a 100% duty cycle, legal limit (1500W) 1.8-54 MHz RF amplifier intended for both amateur and government use. It incorporates a... Read more

Mobile Communications Center – Go Box by KI6AIX April 15, 2015 No comments

  Designed and built by Dennis, KI6AIX. This Mobile Comm Center features VHF and UHF two-way radios, a scanner, internal battery or power supply.... Read more

New ! Yaesu FT-410 August 27, 2015 No comments

YAESU FT-410 features General   Rx Frequency Range: 30 kHz – 30 MHz (operating) 160 – 10 m (specified performance, Amateur bands only) Tx Frequency Ra... Read more

KLG Keyer August 17, 2016 No comments

KLG Keyer Features Full K1EL WinKeyer,including standalone mode Twenty 80-character message memories Iambic A/B, Ultimatic, and Bug modes Adjustable w... Read more

Digital Modes JTDX – Videos and Guides – FT8- JT65 – JT9 – T10 – WSPR January 08, 2018 No comments

  JT DX JT65 – JT9 – T10 – FT8 – WSPR Guides JTDX_User_Manual_EN_2018_01_08.pdf – (English language by VK7YUM with... Read more

JT-DX 18.1.0.30 with FT8 mode ! Released December 08, 2017 No comments

JT-DX Download JTDX means “JT & T modes for DXing”, it is being developed with main focus on the sensitivity and decoding efficiency,... Read more

New Digital Modes Changing Complexion of Bands and Perhaps of Ham Radio November 02, 2017 No comments

The wave of software-based digital modes over the past several years has altered the atmosphere of the HF bands. Some suggest the popularity of modes... Read more

Everybody’s Trying the New FT8! November 02, 2017 No comments

“FT8 is the newest weak-signal mode from Joe Taylor, K1JT, and friends. It operates very much like JT65 but is four times faster and more automa... Read more

Goodbye FT8, Hello Olivia, The Magic HF Digital Mode October 24, 2017 No comments

“So many people have started using FT-8 on HF, but they leave all the other modes to die off, like Olivia. Olivia isn’t new, but it offers... Read more

Review How Does An Inexpensive Transceiver Compare to An Expensive Transceiver September 12, 2017 No comments

Jim, W6LG looks at http://www.sherweng.com/table.html website with extensive detail about receiver performance. Read more

SDRPlay RSP2 First Look [ Video ] November 22, 2016 No comments

The RSP2 is our new enhanced version of the popular RSP1 which provides three software selectable antenna inputs, & new stability and clocking fea... Read more

Coaxial Cable Preparation Tools for Crimp Connectors [ Video ] August 02, 2017 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 DX... Read more

The Coax Connection: Interview with Ray Nelson, N1MPD (#AD 83) July 23, 2017 No comments

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Icom ID-51A review on AmateurLogic.TV December 25, 2014 No comments

Icom ID-51A review on AmateurLogic.TV Read more

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Xiegu X5105 QRP HF SDR Radio by K6UDA – Review

Fri, 01/19/2018 - 06:56

MFJ is the exclusive North American Distributor of this new ultra-portable multimode HF transceiver.  

Features a built-in highly efficient automatic antenna tuner, split frequency XCVR function, RIT receive fine tuning, NB noise suppressor, NR digital noise reduction, number notch, and computer-aided control functions.  

Super lightweight and portable, you can take it anywhere! The X5105 is equipped for desktop or handheld use and covers all modes HF + 6-Meters, SSB/CW/AM/FM/RTTY/PSK-31.  

Everything You`re Looking For! That`s what you get with XIEGU`s all-new X5105 ultra-portable multimode QRP transceiver marketed exclusively in the US by MFJ. Compare feature by feature, and you`ll quickly realize it`s like carrying a sophisticated full-sized station transceiver with you — in your  pocket!

Here are some of the many reasons why you`ll want a X5105:

 

    • General coverage receiver, 500 kHz to 30 MHz — plus 6 Meters 5-watts output, all bands, from 160 to 6 Meters (1.5-W AM).

 

    • All mode operation: SSB, CW, AM, FM, plus digital Smooth tuning, 1-Hz VFO resolution, A/B split  plus RIT Big 3.6″ LCD screen with rich display content, Noise Blanker, Digital Noise Reduction, plus Notch Filter!

 

    • Multiple Band-Pass Filters plus selectable AGC speed Computer interface for digital modes Built-in Keyer and CW trainer, Multi-funcition microphone, Built-in Automatic Antenna Tuner, High-capacity battery pack (3800 mAh)

 

    • Use as a handy talkie, has built-in speaker microphone.

 

    • Includes: Multi-purpose handheld microphone, DC power cord, USB cable, service card and instruction manual.

 

    • Built-in battery charger automatically cuts off when battery is fully charged.

 

    • Size: 6-5/8″ W x 3-5/8″ H x 1-7/8″ D Weight: 2.1 pounds

 

  • Exceptionally Low Price: $669.95
(adsbygoogle = window.adsbygoogle || []).push({}); VHF Baofeng UV9R Plus Waterproof – Dual Band FM VHF UHF December 18, 2017 No comments

Baofeng UV9R Plus Product parameters Frequency Range: VHF 136-174,UHF 400-520MHz Theoretical communication distance: 10 km Power: 15W Battery: Polymer... Read more

Two new Wouxun mobile radios have lower prices December 17, 2017 No comments

Wouxun mobile radios are known for delivering good performance at a fair price. Two models in particular stand out in this category, the popular UHF/V... Read more

IRN – International Radio Network November 20, 2017 No comments

The IRN (International Radio Network) is a VoIP/RoIP system using Teamspeak 3 (TS3) that allows radio users to TX/RX using RF around the World using ... Read more

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Antenna C3S-JK – 2 Elements on 20M / 2 Elements on 15M / 2 Elements on 10M / 12 Foot Boom January 20, 2018 No comments

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“Antenna Wire” is the topic of the latest episode of the “ARRL The Doctor is In” January 18, 2018 No comments

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A Dualband 50/70MHz Yagi with single feedpoint – 5/7 (12) element 144/70MHz Yagi (2.4m) January 16, 2018 No comments

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SPE 2K-FA Amplifier – ARRL Review September 11, 2016 No comments

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Discusses the difference between Yagi antennas, log periodic antennas, and phased array antennas.   Read more

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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 DX... Read more

New Chinese Zhou Enlai Student Satellite Set to Launch

Fri, 01/19/2018 - 06:42

The 2U Zhou Enlai CubeSat, developed with primary and middle school students in China, is expected to launch on January 19. The satellite is named after the first Premier of the People’s Republic of China, who held office from 1949 until 1976. A report on the official Xinhua Net website said the CubeSat, constructed at Huai’an Youth Comprehensive Development Base in Jiangsu Province, has been transported to Jiuquan Satellite Launch Center, where a CZ-11 solid-fuel rocket will put it into orbit Friday.

 

“Twenty teenagers who participated in the development project accompanied the transport group to the launch center and will witness the lift-off,” Xinhua said.

 

The satellite appears to be the HA-1 satellite coordinated with the International Amateur Radio Union (IARU) to carry an Amateur Radio FM voice transponder and aerospace science education projects. According to the IARU Amateur Satellite Coordination pages, the HA-1 CubeSat is equipped with an Amateur Radio repeater and slow-scan television (SSTV) component, with an SSTV beacon that will post date, time, temperature, and location information on an SSTV frame.

The satellite has a downlink in the band 435-438 MHz, and an uplink in the band 144-146 MHz. Telemetry will be 9.6 k BPSK on 437.350 MHz. The FM voice downlink will be on 436.950 MHz, and the uplink is 145.930 MHz.  

Source:ARRL

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Universal Radio presents the update to the Yaesu FT-991, the FT-991A December 05, 2016 No comments

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Universal Radio presents the Kenwood TS-590SG November 16, 2016 No comments

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DC9DZ: Project Tsunami 40K – Power Amplifier (PA) using 4CX15000AA February 19, 2015 No comments

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AX Prefix will be on the Air for Australia Day

Thu, 01/18/2018 - 18:46

The Australian Communications and Media Authority (ACMA) automatically allows all radio amateurs to substitute their normal VK callsign prefix with the letters AX, every Australia Day. Our national day this year falls on Friday 26th of January. This gives radio amateurs the chance to be part of the commemoration the First Fleet’s arrival in 1788 at Sydney Gove and the establishment of a European settlement at Port Jackson, with the raising of the British flag by Governor Arthur Phillip. 

On Australia Day many celebrate our country and culture. This includes the granting of awards, honours and the welcoming to citizenship of many immigrants. National flags will be flown and the celebrations include fireworks displays. 

The AX prefix is popular among prefix hunters and others. The use of a special QSL card is encouraged by the Wireless Institute of Australia. 

Author : Robert Broomhead – VK3DN

Source:http://www.wia.org.au/

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Review How To Solder — Part 1and 2 by W6LG December 26, 2017 No comments

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Antenna Moonraker Ltd Whizz Loops 13-428 November 13, 2017 No comments

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Permanent WSPR beacon in Antarctica Now on the Air

Thu, 01/18/2018 - 14:06

The DP0GVN WSPR now is in operation from the German Neumayer III Research Station of the Alfred Wegener Institute for Polar and Marine Research. The installation is part of a scientific project of the Technical University of Munich in cooperation with the University of Bremen and the German Amateur Radio Club (DARC).

“The beacon is still under test and will be shut down occasionally for more configuration and optimization of antennas and software, before it can be mounted at the final installation site in a few weeks,” said Rainer Englert, DF2NU.

The technology consists of a multiband WSPR receiver that can simultaneously monitor up to eight bands from 160 to 6 meters and feed several hundred receive reports per hour to WSPRnet. The 5-W multiband transmitter also had been commissioned and is working into a vertical antenna.

“After a few days in service, DP0GVN has received several thousand beacons spots already,” Englert reports.

In related news, DP0GVN will be the call sign for Matthias Maasch, DH5CW, starting in February, at Neumayer III Research Station for 1 year, and he plans to be active on HF. For the past year, he has been using DH5CW from the German Antarctic Base. QSL DP0GVN via DL5EBE. — Thanks to Tom Kamp, DF5JL, IARU Region 1 HF Committee Chairman via Rainer Englert, DF2NU, and The Daily DX

Source:ARRL

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Xiegu X5105 QRP HF SDR Radio by K6UDA – Review January 19, 2018 No comments

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YAESU FT-991A Colour Screen and Waterfall Demonstration November 14, 2016 No comments

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Department of Defense Interoperability Communication Exercise Deemed a Success

Thu, 01/18/2018 - 10:49

A November 2017 Department of Defense (DoD)-sponsored communications interoperability exercise involving Amateur Radio was a success, according to information received recently from US Army Military Auxiliary Radio System (MARS) Program Manager Paul English, WD8DBY. The November 4-6 drill, which focused on interoperability between DOD elements including MARS, other federal agencies, and the Amateur Radio community, simulated a coronal mass ejection (CME) event. Army and Air Force MARS organizations worked in conjunction with the Amateur Radio community, primarily on the 60-meter interoperability channels as well as on HF NVIS frequencies and local VHF and UHF, non-Internet linked Amateur Radio repeaters.

“Amateur Radio support for these DOD interoperability exercises continues to grow,” English said.

The Amateur Radio portion of the exercise kicked off with a high-power information broadcast on 60-meter channel 1 (5,330.5 kHz) from a military station on the east coast and the Fort Huachuca HF gateway station in Arizona. The high-power broadcast provided basic exercise information and requested that amateur stations make contact with MARS stations on 60 meters and provide county-by-county status reports for the 3,143 US counties and county equivalents, in order to gain situational awareness and to determine the extent of impact of the scenario. Radio amateurs also were given the opportunity to submit a reception report and receive a QSL card.

New for this exercise, planners divided the continental US geographically and assigned each region to one 60-meter channel, in order to make more efficient use of all five channels. Planners roughly divided the US into northeast, southeast, northwest, southwest, and central regions. Also new for this exercise, military planners incorporated a day-time informational broadcast on a DOD frequency, 13,483.5 kHz USB. The purpose of that broadcast was to extend the exercise outreach during the day to the amateur community and to provide exercise updates.

English said that of the 738 broadcast reception reports received, 494, or 67%, of them were from the 60-meter broadcast while the remaining 244 reports were for the 13-MHz broadcast. The 60-meter broadcasts were received by stations in Canada, Spain, and Switzerland, and reception reports came from several members of the Short-Wave Listening (SWL) community.

Nearly 2,000 Amateur Radio stations took part in the exercise, submitting 3,025 county status reports, nearly 1,300 of them unique. QSL cards for amateurs and SWLs who participated in this exercise are being processed and will be mailed in January.

“Leaders from the supported DOD headquarters as well as the chiefs of both the Army and Air Force MARS programs appreciated the nearly 2,000 Amateur Radio stations that trained during this exercise,” English said. — Thanks to US Army MARS Program Manager Paul English, WD8DBY, and The ARRL ARES E-Letter

Source:ARRL

VHF Wouxun KG-D901 DMR realese 2016 December 08, 2015 No comments

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Review of MFJ-1886 Rx-only Antenna May 18, 2017 No comments

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Unboxes the NEW Yaesu FT-891 September 30, 2016 No comments

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Mountain Topper Radio review by G0POT November 23, 2015 No comments

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Magnetic Loop Antennas – ARRL The Doctor Will See You Now! July 28, 2016 No comments

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“Antenna Wire” is the topic of the latest episode of the “ARRL The Doctor is In”

Thu, 01/18/2018 - 10:44


“Antenna Wire” is the topic of the latest (January 18) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! More than a half-million downloads since its debut in April 2016 attest to the podcast’s popularity.

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.

Source:ARRL

(adsbygoogle = window.adsbygoogle || []).push({}); Review Airspy HF+ and SpyServer streaming FFT and Audio data to an Android watch September 11, 2017 in: Review No comments

Airspy HF+ and SpyServer streaming FFT and Audio data to an Android watch. @mm6dos Took the concept a step further! #sdrsharpinside pic.twitter.com/bWGhoXJOoc — prog’ (@lambdaprog) September 10, 2017 Airspy HF+ The Software Defined Ra... Read more

Equipment SUPERSTAR CRT SS-6900N – 28 and 27 MHz February 25, 2016 in: Equipment No comments

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Digital Modes JTDX – Videos and Guides – FT8- JT65 – JT9 – T10 – WSPR January 08, 2018 No comments

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“Antenna Wire” is the topic of the latest episode of the “ARRL The Doctor is In” January 18, 2018 No comments

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Interview VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios

Tue, 01/16/2018 - 14:36

Michael Walker, VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios that are about to be released, and some cool new features they have

Rediscover radio with FlexRadio Systems. The leader in innovative software defined radio (SDR) solutions for ham operators worldwide. Founded in 2003, FlexRadio brings over ten years of experience in providing amateur radio operators with leading edge HF solutions.  Beginning with our FLEX Series and continuing with our current FLEX-6000 Signature Series family of HF/6m transceivers, FlexRadio Systems helps you rediscover your hobby by continually offering new and exciting capabilities to your rig that traditional radio manufacturers, or even other SDR solutions, can’t provide. And your radio is made and supported right here in the U.S.A. So come rediscover radio with FlexRadio Systems.

 

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A Dualband 50/70MHz Yagi with single feedpoint – 5/7 (12) element 144/70MHz Yagi (2.4m)

Tue, 01/16/2018 - 09:32

An Excellent Dual Band Yagi for 70/144MHz on a 2.4m boom and single feed point

The 4-2-12 Dual Band Yagi has a total of 12 elements, 5 elements are used on 70MHz while 7 elements are used on 144MHz. The 4-2-12 InnovAntennas Dual Band Yagi stands aside from the crowd due to the methods used for it’s design. The 4-2-12 uses no traps or coils, no phasing arrangements and has no need for ‘compromise’ spacing between elements as the antenna has a set of correctly spaced elements for either band but still deploys only one feed point. An excellent antenna with great SWR bandwidth and performance in one package.

Performance

Gain on 70MHz: 9.78dBi @ 70.20MHz

F/B on 70MHz: 21.11dB @ 70.20MHz

Gain on 70MHz at 10m above Ground: 15.46dBi

Gain on 144MHz: 11.96dBi @ 144.300MHz

F/B on 144MHz: 19.02dB @ 144.300MHz

Gain on 144MHz at 10m above Ground: 17.82dBi

Power Rating: 3kw+

SWR 50MHz: Below 1:1.4 from 70.00MHz to 70.400MHz

SWR 70MHz: Below 1:1.5 from 144MHz to 144.800MHz

Boom Length: 2.4m

Weight: 6Kg / 12.2LB

Turning Radius: 2.396m

Wind Loading: 0.2 Square Metres

Wind Survival: 241KPH / 150MPH

 

Specification

This antenna is made with (10mm). The antenna has fully insulated elements which will ensure continuous, high performance for many years to come. Boom to mast brackets are included with all antennas which will support 2 inch (50mm) masts.  Boom is 30mm square aluminum with 2mm wall thickness.

Our antennas are constructed with the best quality materials in order that the best mechanical construction can be achieved, not the cheapest and most profitable! Even a digital caliper is used (with an accuracy of .01mm) to measure the elements during production to ensure they are within 0.2mm of what they should be, ensuring they work as well as our software model predicts.

Note: Much development time has gone into our antennas, not just on basic electromagnetic design, we are able to model the effect of insulators, booms and other objects to ensure the make up of our antennas have least effect on performance and pattern degradation. More information can be found here

  • Marine grade Stainless Steel Fittings
  • Original Stauff Insulation clamps
  • Mill finished boom and elements for highest levels of accuracy

£199.95

http://www.innovantennas.com/

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A Note to Members from ARRL President Rick Roderick, K5UR

Mon, 01/15/2018 - 18:36

In the last few weeks, the ARRL’s Board of Directors has been the subject of an organized misinformation campaign. It is being orchestrated by a group of hams, some of whom are well-intentioned but have been misled. This effort, which consists of a series of mischaracterizations, initially dealt with (1) the ARRL Board’s censure of an ARRL Director, and (2) some proposed revisions to ARRL’s Articles of Association and Bylaws that are likely to be considered at the upcoming ARRL Board meeting and which were circulated by a member of the Board. None of the proposed Article and Bylaw changes has yet been addressed by the Board of Directors. More recently, other equally erroneous and false statements have been made with respect to completely unrelated issues, in an effort to draw into question ARRL’s decision-making processes. The principal suggestion is that ARRL operates under some “cloak of secrecy.” The criticism is unfair and undeserved.

ARRL’s representative system of governance, which has worked exceptionally well in the advocacy and promotion of Amateur Radio and the interests of ARRL members for more than 100 years, is unchanged. And the legislative and other advocacy positions currently being pursued are critical to the long-term survivability of the Amateur Radio Service.

The ARRL Board does seek thoughtful, informed input on policy issues concerning Amateur Radio from its roughly 150,000 members. ARRL’s governance structure provides that regionally elected, volunteer directors will represent the interests of the members in their respective Divisions, working collectively and collegially within our Board to make policy and to advocate their constituents’ interests. ARRL’s Board members hold cabinet meetings and forums at hamfests and conventions, and they staff ARRL booths at hamfests and conventions in order to find out what interests and concerns you have as ARRL members. They take this feedback from you, and they come to Board meetings twice a year to make policy for the organization. They work together collegially to develop the best policy decisions. This structure presumes that the Board’s collective wisdom is far greater than that of any one Board member, and each Board member is obligated by our Articles and Bylaws to come to meetings with a good idea of what the members need and what is best for Amateur Radio as a whole.

As is the case with most large, national non-profit associations, ARRL Board meetings are not open to the public. It has always been that way, as a matter of necessity. That is because, at all such meetings, confidential issues such as spectrum protection, employee compensation, financial information, and FCC submissions are candidly discussed, and the members’ interests at those meetings are advocated by the Directors on a representative basis.

Unfortunately, it was necessary for the Board to take the highly unusual action of publicly censuring one of its members recently. The Board heard the allegations made by an ARRL member of what transpired at an Amateur Radio event; it heard reports from other amateurs who were there, and it heard all the information that the Director involved chose to present. Everyone had a chance to speak and to evaluate the presentations. The Board, in an 11 to 3 vote with one abstention, took action to protect the organization’s integrity based on the information presented. This process and procedure are what nonprofit associations have to be prepared to employ, and do employ, to maintain order within their organizations and to ensure that the interests of the affected Director are protected as well. This is not a procedure that any nonprofit organization would conduct publicly.

The ARRL Policy on Board Governance and Conduct of Members of the Board of Directors and Vice Directors has been drawn into question, probably as the result of the fact that the Board’s censure decision was based upon a violation of that policy by the Director involved. The Policy is intended to protect the democratic decision-making processes by which ARRL has operated effectively for so long, and to set forth principles to guide an organization’s decision making and the behavior of individual board members when acting on behalf of ARRL. When it was adopted by the Board a year ago, it was posted for ARRL members to read. The policy calls for honesty, integrity, transparency, confidentiality, and equity. The purpose of adopting such a statement formally is to provide employees, volunteers, and board members with guidelines for making ethical choices and to ensure that there is accountability for those choices.

When board members of a nonprofit adopt a code of ethics, they are expressing their commitment to ethical behavior. It is intended to protect the Board’s deliberations and to protect the staff from inappropriate actions by Board members. It seeks to preclude precisely the type of selective disclosures and unilateral and subjective characterizations of proposed Board actions that have happened recently. There is nothing at all insidious about the policy, which is subject to regular review and modification, as are all other ARRL organizational documents.

As to the criticism of the proposed Articles and Bylaws changes, the Board has not yet considered them. It may or may not adopt some or all of the changes recommended by its Executive Committee or by an individual Director. Any responsible Board of Directors regularly reviews, amends and updates its Articlesand Bylaws. And ARRL member input is welcome on all such subjects. Indeed, the recommended Article and Bylaw changes were not considered to be Board confidential. The problem, however, is that it is not fair to members, or to the representative Directors who have yet to evaluate them collectively, to have the proposals mischaracterized or misrepresented.

ARRL Directors are volunteers. They are smart, dedicated radio amateurs who each devote thousands of hours per year of their own time to representing you as best they can.

To those who try to suggest that the Board has abandoned its obligation to the members in favor of the organization — you draw a distinction that doesn’t exist. The Board absolutely understands that the members are the organization. The members of ARRL are always best served by an informed Board that works together to make policy that is in the best interests of the organization. The divisive tactics that are being used now, commenced through disinformation and a lack of candor, are harmful not only to the organization, but to Amateur Radio operators everywhere, the good work of the ARRL staff, and the Service that we love so much.

Rick Roderick, K5UR, President

ARRL — the national association for Amateur Radio

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Fox-1D Amateur Radio CubeSat Launches Successfully, Now Designated as AO-92

Mon, 01/15/2018 - 12:42

Right on schedule at 0359 UTC on January 12, the solid-fueled first stage and ground-lit strap-on boosters of the Indian Space Research Organisation (ISRO) Polar Satellite Launch Vehicle (PSLV) ignited and hurtled AMSAT-NA’s Fox-1D CubeSat along with 30 other satellites onboard the PSLV-C40 mission toward a sun-synchronous orbit. Less than 18 minutes later, the primary payload, a Cartosat-2 series imaging satellite for the Indian government, separated from the launcher’s fourth stage, followed by other satellites on the mission. By 27 minutes into the flight, confirmation came that all nanosatellites had been deployed. Fox-1D was in orbit!

Just before 0500 UTC, Fox-1D passed over western North America, but the onboard timer that ensures the satellite does not deploy antennas and begin transmitting until it’s clear of the launch vehicle and other satellites had not yet expired. “

“At about 0517 UTC, the satellite came to life and its antennas deployed over the North Pole,” AMSAT reported. “The AMSAT Engineering team and Amateur Radio operators worldwide were watching various WebSDRs for signs of life. Around 0525 UTC, the characteristic “Fox tail” of the Fox-1 FM transmitter was seen on multiple WebSDRs. Fox-1D was alive!” At 0528 UTC, the first frame appeared on the AMSAT telemetry server, uploaded by Anatoly Alexsandrov, UA9UIZ, and initial telemetry values confirmed that the satellite was healthy.

AMSAT-NA OSCAR Number Administrator Bill Tynan, W3XO, has designated Fox-1D as AMSAT OSCAR 92 or AO-92.

AMSAT Engineering reminds stations that the satellite will not be available for general use until the on-orbit checkouts are complete. AMSAT invites continued telemetry reports to assist the engineering team to complete commissioning.

“During commissioning, the transponder may be active at times, but please do not transmit as you may interfere with important tests that must be completed before the satellite is commissioned,” AMSAT said. “The commissioning process is expected to take up to 2 weeks.”

See the AMSAT-NA website for an update on AO-92 commissioning and payload testing. Additional updates may be posted this week.

In addition to a Fox-1 U/V FM transponder, Fox-1D will carry several university experiments, including a MEMS gyro from Pennsylvania State University-Erie, a camera from Virginia Tech, and the University of Iowa’s High Energy Radiation CubeSat Instrument (HERCI) radiation mapping experiment. Fox-1D also carries the AMSAT “L-Band Downshifter,” which gives the option of utilizing a 1.2 GHz uplink for the FM transponder. The Fox-1D downlink will be on 145.880 MHz, and uplinks will be on 435.350 and 1,267.350 MHz (67 Hz CTCSS), switchable.

The PSLV launcher also carried the French PicSat, which includes a V/U FM transponder. PicSat will perform space observations. The transponder uplink is 145.910 MHz, the downlink is 435.525 MHz. — Thanks to AMSAT News Service and Paul Stoetzer, N8HM

Source:ARRL

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Sun, 01/14/2018 - 10:25

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SDRuno V1.22 has now been released

Sat, 01/13/2018 - 15:00
SDRuno Download 

This version contains the following changes and bug fixes…

Added
• Support for 1366×768 default layout
• ADC overload detection in AGC off mode
• ADC overload acknowledgment system to avoid lockout condition
• Custom step size for each mode
• Band Button Groups (Ham Lower, Ham Upper, Broadcast)
• Two additional SP1 width presets (2560 and 3840)
• Additional menu option in memory panel to reset column widths (helps when upgrading)
• Scheduled Recording
• Auto update

Changed
• Registry reset now only clears 1.2+ entries
• SP1 Window max size supports 4K displays (3840×2160)
• Small improvements to the memory panel (panel width and field width changes)
• Improvements to the IF output mode
• UTC time fixed to 24 hour format
• Play!/Stop button colour coordinated
• Move MUTE button to make way for VOLUME label
• Moved Squelch value display to the right

Fixed
• Log10 SING error
• Aero support detection to try to prevent rendering issues
• Freezing when switching to HiZ port in gain mode
• Gain “pumping” issue when in gain mode
• Settings panels not displaying properly when “un-minimised”
• Zoomed in frequency scale drag out of bounds bug
• Noise floor measurement bug
• Improved RSP error handling
• Sample rate change causing spectrum display issues
• Device selection bug

Known Issues
• SP2 CWAFC drift issue (Zoom/window size/freq display) – will be addressed in 1.23, workaround for now is to zoom out fully in the SP2 window and then the CWAFC feature will work.
• IF output mode disabled SP1 spectrum mouse clicks – temporary issue until LO is separated from the VFO (see plans below)

Following on from the 1.21 release where we outlined the features for coming releases, we have updated our plans, as shown below. The purpose of publishing this information is to give people an insight to the development plans but it is NOT a guarantee of the exact feature line-up and we cannot give release dates.

1.23 Intermediate update
• Recording of selected signal only (either I/Q or audio) to WAV file format
• Selected signal piped to VAC in I/Q format

1.3 Major update
• Separation of VFO and LO frequency control
• Frequency scanning

1.31 Intermediate update
• Remote client for network based streaming I/Q server applications

1.4 Major update
• Addition of new API for third party plugins

Download link: https://www.sdrplay.com/downloads

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Ham radio CubeSat launch success

Sat, 01/13/2018 - 12:46

CubeSats carrying amateur radio payloads were among the 31 satellites successfully launched on January 12 at 0359 UT on the ISRO PSLV-C40 mission from Satish Dhawan Space Centre in Sriharikota, India.

Two of the CubeSats, Fox-1D and PicSat, carry amateur radio FM transponders, but neither is yet available for general amateur use. The PicSat FM transponder is unusual in that instead of a CTCSS tone it requires a 1750 Hz tone burst to activate. The 1750 Hz tone burst used to be popular on IARU Region 1 FM repeaters in the 1980s and 90s before the widespread use of CTCSS.

CNUSail-1, built by students at the Chungnam National University in Korea, carries a deployable sail. The students have requested the help of radio amateurs in receiving the 437.100 MHz 9600 bps BPSK beacon, further information is available at https://sites.google.com/view/cnuusg

JE9PEL lists these frequencies for the satellites carrying amateur radio payloads:

Fox-1D (AO-92) 145.880 down 435.350/1267.350 up FM CTCSS 67.0Hz/200bps DUV PicSat   435.525 1200bps BPSK CNUSail-1     437.100 9600bps BPSK Canyval-X 1/2  437.200 9600bps MSK KAUSAT-5 437.465/2413.000 9600bps FSK,115k2 MSK STEP-1 437.485 9600bps FSK CW

Shankar A65CR/VU2SWG reported coping the Fox-1D satellite voice beacon on the morning pass at 30 deg elevation in Dubai using a TH-F7 with standard rubber duck. YL voice with satellite identifier. Very short burst with fluctuating carrier.

Madhu A65DE also copied Fox-1D from Fujairah, North of Dubai.

AMSAT North America has issued a statement formally designating Fox-1D as AO-92:

Fox-1D, a 1U CubeSat, is the third of AMSAT’s five Fox-1 CubeSats to reach orbit, being preceded by AO-85 (Fox-1A) and AO-91 (RadFxSat / Fox-1B). Fox-1D carries the Fox-1 U/v FM transponder, with an uplink of 435.350 MHz (67.0 Hz CTCSS) and a downlink of 145.880 MHz. In addition, Fox-1D carries several university experiments, including a MEMS gyro from Pennsylvania State University – Erie, a camera from Virginia Tech, and the University of Iowa’s HERCI (High Energy Radiation CubeSat Instrument) radiation mapping experiment. Fox-1D also carries the AMSAT L-Band Downshifter experiment which enables the FM transponder to be switched to utilize an uplink of 1267.350 MHz (67.0 Hz CTCSS).

Fox-1D was sent aloft as a secondary payload on the Indian Space Research Organisation (ISRO)’s PSLV-XL rocket as part of the PSLV-C40 mission. Fox-1D was one of thirty-one satellites successfully deployed on this launch.

Since Fox-1D has met all of the qualifications necessary to receive an OSCAR number, I, by the authority vested in me by the AMSAT President, do hereby confer on this satellite the designation AMSAT-OSCAR 92 or AO-92. I join amateur radio operators in the U.S. and around the world in wishing AO-92 a long and successful life in both its amateur and scientific missions.

I, along with the rest of the amateur community, congratulate all of the volunteers who worked so diligently to construct, test and prepare for launch the newest amateur radio satellite.

William A. (Bill) Tynan, W3XO
AMSAT-NA OSCAR Number Administrator

Further information on the Fox-1D launch, deployment and designation at
https://www.amsat.org/fox-1d-launched-designated-amsat-oscar-92/

Information on PicSat is available via
https://amsat-uk.org/2018/01/10/picsat/

Report on the five Korean satellites that were launched
http://koreabizwire.com/cube-satellites-built-by-university-students-launched-into-outer-space/107445

N2YO online real-time satellite tracking http://www.n2yo.com/

AMSAT-NA online orbital predictions http://www.amsat.org/track/

Keplerian Two Line Elements (TLEs) ‘Keps’ for new satellites launched in past 30 days
http://celestrak.com/NORAD/elements/tle-new.txt

Source:ARRL

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Club Group Will Operate W1AW for Winter Field Day

Fri, 01/12/2018 - 18:13

Maxim Memorial Station W1AW will host a group that will take part in Winter Field Day later this month. Sponsored by the Winter Field Day Association (WFDA), Winter Field Day will take place over the January 27-28 weekend, and it can be an opportune time to prep for ARRL Field Day in June.

“Assuming the weather holds out, a group of hams will be here the last weekend of January to operate W1AW in the Winter Field Day,” W1AW Station Manager Joe Carcia, NJ1Q, said this week. Headed by Frank Gitto, KA5VVI, the group will consist of members of the Warren County Amateur Radio Club (W2WCR) in New York. Gitto said the club is hoping to have an even dozen members at W1AW, operating in shifts of six. Carcia said the Warren County ARC operators will avoid the harsh elements and operate from indoors at W1AW, in the “home” station category.

According to the WFDA website, the Winter Field Day Association “is a dedicated group of Amateur Radio operators who believe that emergency communication in a winter environment is just as important as the preparations and practice that is done each summer, but with some additional unique operational concerns.” The WFDA said it believes that maintaining operational skills “should not be limited to fair-weather scenarios.”

For the hardier within the Amateur Radio ranks, Winter Field Day is an excuse to get out of the house and enjoy the great outdoors, and — let’s face it — it’s not cold and snowy everywhere during the winter. Gitto said that some Warren County ARC members will be operating WFD from Indian Lake, New York, using special event call sign W2C.

The event, which got its start in 2007, is not restricted to North America. All Amateur Radio operators around the world are invited to participate, and there are three entry categories — indoor, outdoor, and home. The rules are similar to those for ARRL Field Day. Operation will take place on all HF bands except 12, 17, 30, and 60 meters, as well as on VHF, UHF, and satellite. The event runs 24 hours. US and Canadian stations exchange call sign, operating category, and ARRL or RAC section.

The WFDA encourages both group and solo operation. As the WFDA says on its Facebook page, “The object is winter fun!”

Source:ARRL

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    Read more

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Arc-Free Operation Two heavy duty 4.5 kV transmitting variable capacitors and a massive high current roller inductor gives you arc-free operation up t... Read more

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Amptec HF2015DX Video 1 Video 2   Read more

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MFJ Extends its Cobweb Antenna to 40 Meters [ Review ]

Thu, 01/11/2018 - 13:13

Ask Dave 71 reviews the MFJ cobweb antenna, covering 20 through 10 meters. MFJ recently came out with a modification kit, adding 30 and 40 meters. This video covers construction notes and performance. Great antenna and a keeper

Restricted space spoiling your operating fun? MFJ Cobweb puts your call back on the map!

This six-band (20, 17, 15, 12, 10, 6 Meters) full half-wave Cobweb Antenna is perfect for restricted space or portable operation. Sky-gray fiberglass spreaders and nearly invisible wire elements (flat 9x9x1/2 feet square. 8 pounds), blend in with your surroundings while standing tough against nasty weather.

Outstanding performance! Horizontally polarized for less local noise pickup plus solid gain over verticals will allow you to work DX easily — even on QRP. Omni-directional. No radials needed! Works great at low heights. Low
SWR is due to MFJ’s exclusive Spider-MatchTM broadband network. Use lightweight TV hard- ware to mount on your chimney, balcony, mast.

Low in cost, but big on performance. MFJ Cobweb Antenna turns your space problem into a stack of QSLcards from far away places.

MFJ-1836HK34, $119.95. Add-on kit adds 40/30 Meters to the
MFJ-1835/1835H/1836/1836H cobweb.

(adsbygoogle = window.adsbygoogle || []).push({}); VHF Baofeng DM-5R Buyer Beware by VE3IPS September 16, 2016 No comments

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PVC Antenna Launcher – Download: Read more

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“Science Milestones in the History of Radio” Event is Under Way

Thu, 01/11/2018 - 12:57

A year-long operating event, “Science Milestones in the History of Radio,” is under way, sponsored by the Italian Amateur Radio Association (ARI) Fidenza Radio Club. Each month will highlight individuals who laid the foundations — theoretical and practical — for radio science. Awards are available for participating stations.

Each month, a commemorative station with a distinctive call sign will be on the air featuring an individual — some better known than others — with a role in the history of wireless communication. During January, II4MXW is active, honoring the contributions of James Clerk Maxwell.

Commemorative stations on the air for the remainder of 2018 are:

February II4HRZ Heinrich Rudolf Hertz March II4CAO Temistocle Calzecchi Onesti Calzecchi (He demonstrated in experiments from 1884 through 1886 that iron filings contained in an insulating tube will conduct an electric current under the action of an electromagnetic wave. This discovery was the operating principle behind the early RF detector known as a “coherer,” developed several years later by Oliver Lodge, Edouard Branly, and Guglielmo Marconi.) April II4MAR Guglielmo Marconi May II4TES Nikola Tesla June II4AMP Andre Marie Ampere July II4COU Augustin de Coulomb August II4VOL Alessandro Volta September II4LNZ Heinrich Lenz (Lenz’s law states that an induced electromotive force (EMF) always gives rise to a current whose magnetic field opposes the change in original magnetic flux.) October II4OER Hans Christian Oersted November II4HNR Joseph Henry (He studied induced currents and made electromagnets that led to the development of the telegraph. In 1832, simultaneously with Michael Faraday, he discovered the phenomenon of self induction, demonstrating that a magnet moving within a magnetic field produced an electric current.) December II4FRD Michael Faraday

Further details and award rules are available on the ARI-Fidenza website. 

Source:ARRL

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