Stray Signals

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RSGB papers for IARU-R1 Conference

Papers on a variety of topics by a team of RSGB volunteers are now available for the IARU-R1 Virtual Conference in October. HF-UHF Modernisation and the WRC-23 challenge in the 23cm band all feature  https://conf.iaru-r1.org/part-1/documents/ The full set of IARU papers is due by early August. Category: Front Page News, RSGB Notices Read the full…

When Disaster Strikes: Decentralized Tech a Safety Mesh From Blackouts – Cointelegraph

Hurricanes and typhoons, earthquakes, cyberattacks and solar flares: There are many disasters, both natural and human-made, that have the potential to disrupt our digital-centric societies. With an estimated 4.5 billion people using the internet, many communicate with cell phones and email, while financially transacting using credit cards, apps and ATMs. But each of these critical…

The j-pole antenna is fixed…

KX4O Ham Member QRZ Page …or invalidated depending on your point of view. Presenting the… Two new patents address shortcomings of the 84 or more year old traditional J antenna design. This effort features the following highlights. The research includes extensive J antenna myth busting, validating the concerns trumpeted by many over the years, using…

IARUMS June newsletter now available

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…

Xiegu XPA125B Ham Radio Amplifier

The XPA125B amplifier has a gain of 13 dB making it the perfect amplifier for a 5 watt transmitter when 100 watt output is needed. The automatic Antenna Tuner Unit and power amplifier unit of XPA125B can be used independently of each other as either an automatic antenna tuner or a separate power amplifier. The…

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