Topband: WSPR and topband

[STEVE MCDONALD]

> Why not say 1.990 MHz to avoid QRM.

Mainly because nobody will be listening there. 

On most nights there are dozens and dozens of stations monitoring (actually 132 at this moment) the standard 160m WSPR frequency. Overnight WSPR’ing has been with us for several years now and can’t really be compared to the typical CW beacons heard on 10 or 6m. On HF they are almost invisible to those using the band and their typically low power levels usually put them below the threshold of audibility by ear. They create no QRM unless you live down the street from one and are not continuous since they transmit at random periods throughout the hour at a user predetermined duty cycle. Most transmit once every 10 minutes or so. I see no reason why your WSPR propagation plans should not continue along with the numerous other ones on Topband.

Steve VE7SL  


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