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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- The K7RA Solar Update September 25, 2020Tad Cook, K7RA, Seattle, reports: Up until September 23, we saw 32 consecutive days with no sunspots. Then new sunspot group AR2773 appeared, which has a magnetic signature indicating it’s part of new Solar Cycle 25. Spaceweather.com noted it was a weak one, and may not persist for long. The daily sunspot number for September […]
- Phil Temples, K9HI, Appointed as New England Division Vice Director September 24, 2020ARRL President Rick Roderick, K5UR, has appointed Phil Temples, K9HI, of Watertown, Massachusetts, as New England Division Vice Director. He succeeds Mike Raisbeck, K1TWF, who was elected earlier this year as ARRL First Vice President. President Roderick made the appointment after consulting with New England Director Fred Hopengarten, K1VR, and the region’s Section Managers. “I […]
- Special Event Operation to Honor Amateur Radio Software Award Recipient September 24, 2020
- Hams Help Find Kids by Monitoring FRS Radios September 24, 2020
- International Telecommunication Union Releases 2020 ITU Radio Regulations September 23, 2020
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