For a change I put my WSPR beacon on 40m this afternoon and set the output power to 100mW. Within minutes there were reports coming in and some are very good. For example, -9dB S/N from a German station suggesting another 20dB attenuation (i.e. 1mW out) and the signal might still be copied. A few minutes later and there was a log from an LA 1500kms away. Incidentally, several CQs on 40m CW with 1W failed to get a response an hour earlier! I'm now trying 100mW on 30m.
7 Jan 2010
40m WSPR with 100mW
For a change I put my WSPR beacon on 40m this afternoon and set the output power to 100mW. Within minutes there were reports coming in and some are very good. For example, -9dB S/N from a German station suggesting another 20dB attenuation (i.e. 1mW out) and the signal might still be copied. A few minutes later and there was a log from an LA 1500kms away. Incidentally, several CQs on 40m CW with 1W failed to get a response an hour earlier! I'm now trying 100mW on 30m.
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