Happy to be one of only two in the 17-18UT period getting across from anywhere outside the US to AI6VN/KH6 this evening again with the vertical delta loop wire blasted by continuing strong winds. My 1W was achieving a 5dB stronger signal, Watt for Watt, than my compatriot (G4UGD, -23dB at 5W, vs my -25dB at 1W).
Extending the spotting period to 12 hours yielded the exact-same result.
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| AI6VN reception spots ~17-18UT period. |
Very usefully, the outstandingly excellent Proppy HF propagation tool now permits user-defined signal bandwidth and detection levels to be entered, yielding realistic results for WSPR transmissions, at least for very to moderately simple antennas:
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| Basic circuit reliability for a Wales-KH6 path for 1W WSPR, November 2020. Courtesy Proppy. |
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