HFU HF Underground
Loggings => European Pirates and Private Stations => Topic started by: europirate on July 17, 2022, 1127 UTC
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SIO 121 - weak carrier and audio
1125 Don't speak / No Doubt
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11:41 nothing here
1153 trying on Weston SDR : bursts of signal, that's a 3rd order intermodulation,
so find (2*F1 - F2)=6975, with strong signals on F1 and F2
edit : could be also a 2nd order intermod, formula F1+F2 or F1-F2
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Weston does suffer from strong signals from the Washford tx site on the Somerset coast - there are a number of mixes I am aware of (like 6363) - but not sure about this one. Some of those mixes also cause the Kiwi SDR to block. I've seen that happen on the 48mb quite a lot.
These mixes usually present themselves as BBC programming, but I do check for that to make sure the audio isn't the same.
I live close to Droitwich and we have similar problems caused by 198 / 693 / 1053 / 1215 etc...
Others on the chat heard it in Germany - so I'm happy to stick with the UNID.