Solar-Terrestrial Data
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- Roundtable April 2022 – Denver Radio Club on Vertical vs Horizontal – HF Monopole vs Dipole
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Tag Archives: protection
70W HF Linear Amplifier Project
Whilst very happy with the performance of the Hermes SDR, I’ve been considering a matching HF linear to provide a moderate (6-9dB) increase in output power. I have ideas about operating portable using battery power; ~50W seems a nice balance … Continue reading
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Tagged amplifier, battery, hermes, linear, PA, protection, SDR, SWR
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Over Voltage Protection
I recently re-homed several cheap 13.8V linear PSUs from rallies, ranging from 3 to 10A. My intention is to power smaller items of equipment; TNCs, FT817s and similar. However, after inspection it became apparent that all lacked any form over over … Continue reading