TWO-BAND DESIGNS TWO-BAND DESIGNS Bands Radiator Ladder Line Lower Resonance Upper Resonance Length (ft) Length (ft) Freq (MHz) SWR Freq (MHz) SWR VF = 0.975/40 144.83 89.50 3.87 1.8 7.25 1.6 30/17 54.75 36.17 10.12 1.8 18.12 1.3 20/17 77.67 76.17 14.13 1.7 18.11 1.6 20/15 51.00 50.67 14.17 1.1 21.27 1.2 20/12 68.00 46.67 14.15 1.7 24.92 1.5 17/12 28.58 46.67 18.11 1.6 24.95 1.5 17/10 …
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- International Amateur Radio Union Preparing for WRC-23 January 12, 2021Preparations continue on the part of the International Amateur Radio Union (IARU) to represent the interests of the amateur and amateur-satellite services at World Radiocommunication Conference 2023 (WRC-23). The International Telecommunication Union (ITU) sponsors WRCs, typically every 4 years, to consider revisions to the international Radio Regulations that define frequency allocations for v...
- New Amateur VLF Transatlantic Record Set January 11, 2021Very low frequency (VLF) enthusiast Joe Craig, VO1NA, reports that Stefan Schaefer, DK7FC, copied his 50-character message transmitted from Newfoundland on 8.271 kHz, with a radiated power of 10 mW.“This is a new record for amateur transatlantic VLF,” Craig told ARRL. “The mode used was EbNaut by Paul Nicholson. EbNaut is a synchronous coherent BPSK […]
- AMSAT/Vanderbilt RadFXSat-2/Fox 1E Set to Launch January 11, 2021
- Dayton Hamvention Cancels 2021 Show January 11, 2021
- Former RAC President John "Hoppy" Hopwood, VE7RD, SK January 11, 2021Former Radio Amateurs of Canada (RAC) President John Farrell “Hoppy” Hopwood, VE7RD, of North Vancouver, British Columbia, died on December 8. He was 91. Hopwood was instrumental in the founding of RAC and was inducted in 2015 as a member of the Canadian Amateur Radio Hall of Fame.Hopwood spent his career in telecommunications, once working […]
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