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The latest IARU-R1 Monitoring System newsletter reports on the continuing interference on various frequencies in the 7 MHz band from Russian language propaganda broadcasts Over The Horizon Radar (OTHR) systems in the Russian Federation and China continue to cause interference in the amateur 14 and 21 MHz bands and Iran has been operating a radar in the 21 and 28 MHz bands. The International Amateur Radio Union Monitoring System (IARUMS) Region 1 June 2020 newsletter can be read at Recordings of military transmissions can be found on the Signal Identification Guide Wiki at Monitor the short wave bands on-line with a web based SDR receiver at IARU Monitoring System (IARUMS) Source:http://www.southgatearc.org/
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Antenna
W4OP Loop Antenna
It seems that more and more, amateurs are facing increasingly strict HOAs. This antenna is not designed for the backpacker, but rather for the QRP ama... Read more
OL7M installed monster G0KSC 28MHz system
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
Comet Antenna – Full Catalog (.pdf)
Download Comet Antena catalog in (.pdf ) : Read more
Hy-Gain T2X Tailtwister Series II – Antenna Rotator
T2X Tailtwister Series II for large medium antenna arrays up to 20 square foot wind load The T-2XD2 includes the DCU-2 Digital Automatic Controller... Read more
Building Coaxial Cable Traps by W8WWV
“ “Introduction This page describes the design and construction materials I used to build a coaxial cable trap. A coaxial cable tr... Read more
Review
Review of Radioddity GD-77 DMR Tier 2 Handheld
Dual Band & Dual Time Slot: VHF 136-174MHz, UHF 400-470 MHZ; GD-77 has both Tier I & II and is compatible with Motorola and other DMR radios.... Read more
SDRplay RSPduo Review by Mike Richards ( RadCom )
The new RSPduo from SDRplay was released at this year’s Hamvention in Dayton and provides a dual tuner SDR receiver. Each of the two tuners can operat... Read more
An Alpha Delta lightning arrester with an intermittent short.
Coaxial Lightning Protectors Alpha Delta N Connector Coaxial Surge Protectors are rated for 200 or 2,000 watts at frequencies up to 3 GHz. They are no... Read more
VHF
BaoFeng Tech BF-F8HP
BF-F8HP: “BaoFeng’s Only TRI-POWER (1, 4, 8 Watt)” ExClusive Features that separate it from the UV-5R Series: It has 3 Power Levels... Read more
Talking through a satellite from 15 feet apart
“Andrew Knafel, KN8FEL saw my videos and through our correspondence I helped him learn how to operate satellites. He and his family live in Ohio... Read more
Introduction to the IC-SAT100 Satellite PTT Radio
Video introduction from Icom Inc. to the IC-SAT100 which is Icom’s first Satellite PTT handheld radio that uses the Iridium satellite communication ne... Read more
Icom IC-9700 First Impression, Comparision with IC-7400
Icom IC-9700 Specifications General Frequency coverage 144.000–148.000, 430.000–450.000, 1240.000–1300.000 MHz Mode SSB, CW, RTTY, AM, FM, DV, DD Numb... Read more
Comparing the RFinder K1 and M1 Devices
“This will be the 4th or 5th video I have done on or about an RFinder device. This Android DMR and phone device has been my daily carry for abou... Read more
News
Visualizing RF Standing Waves on Transmission Lines
This video illustrates how RF (radio frequency) standing waves are created in transmission lines – through the addition of the forward (t... Read more
Amateur Radio Operators Show Off Hobby in Springfield
SPRINGFIELD, Mo. – Springfield’s amateur radio operators aimed to show Saturday why their hobby could be a lifeline in an emergency. The Southwest Mis... Read more
FCC Turns Down Petition to Amend Amateur Radio Identification Rules
The FCC has denied a Petition for Rule Making to amend Part 97 station identification rules to better accommodate and simplify station identification... Read more
Hamvention Awards – 2016
Hamvention Awards – 2016 Dayton, Ohio March 17, 2016 Frank Beafore, chairman for the 2016 Hamvention® awards has announced winners for the annua... Read more
