Software Defined Radio, SDR - QRPp dx operations African portable
Saturday, November 7, 2009
2009 ARRL CW SS - More fun.
With SDR it is really easy to apply very narrow filters. Here is a view of the very close-spaces 20m CW signals. See how many you can count within 1KHz of each other.
Zooming out slightly - gives a good view of the level of activity on 20m
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