Topband: Narrow Filtering

[dbevan at datacheck.com]

I'm usually looking for weak DX stations during a contest. 
I crank my bandwidth down to 25Hz if requred. However, I 
watch the panadapter display to check who is calling 
outside my passband. There are so many stations with 
keyclicks it still is hard to hear. They often are heard 
+/- 2kHz. In thought I was clean til I checked closely. 
There are mods to fix this.

Darrell, N6DX