W5OMR/Geoff writes:
The 170 (that I had) had a 'maximum' of 3kHz bandwidth. How narrow and mechanical it sounded. (blech!)
I think with the sideband switch on "both" that 3KHz seletivity position actually means 6KHz, 2 means 4, etc. That said, they DO sound pretty nasty!
73,-Larry/NE1S

