Fellow WSPRers,

Looking in the spot database, I see an awful lot of suspicious spots. Impossibly low power levels of -64 dBm (0.4 nW !!!) and callsigns that don't look natural (458POF, 000AA, 344KHZ, 892, etc).

Do you think it's a deliberate attempt to pollute the database, or just transmission errors that have slipped thru the long-constraint convolutional code FEC?

Thanks,
K4DET