Hi Rich, in reverse order -
If your filters are set to "auto" at the top of the filter menu they will be
progressively engaged as you reduce your bandwidth. That is, I get 2.4, 1.8,
500, and 250 Hz roofing filters, in that order, as I narrow the bandwidth. They
kick in somewhat below the indicated frequency, where depends on the filter.
There's a horizontal line above the bandwidth icon that indicates which of the
roofing filters in engaged at any given time. Wider line is wider filter, of
course.
On spot - a couple of friends and I tried that. We found that I can set my spot
to (nearly) zero beat another station, crank the BW down to 100 and he will
still be in the center of my recieved passband. When I call him I'm usually
virtually zero beat with him - unless HIS RIT/XIT has been cranked. And in that
event all bets are off!
This may or may not be handy - if the DX does not come back to you try moving
10 to 20 Hz at a time, up and down, until he can pick you out of the pile.
73 Pete Allen AC5E
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