I just noticed some behavior on my K3 that I never noticed before since I have not used AM mode until now. In AM mode, I noticed several things about the filter adjustment. By the way, I do have the 6 KHz filter installed (FL2).
First observation: the maximum filter width that I can adjust for an AM signal with the 6 KHz filter switched in is 5 KHz. Is this normal? So, is this value in my filter adjustment the whole signal width (both sidebands) or just half the signal width? Note: I do not have a wider filter.
Second observation: with other modes, CW, SSB, as I narrow down the filter width I can see each filter being switched in on the xfil display. But, in AM mode, this does not happen. The only filter in use is the 6 MHz filter no matter how far I narrow down the filter width (well, down to about 1.35 KHz or so which is the smallest achievable). I assume this is normal behavior and I assume it has something to do with AM TX requiring the 6 KHz filter.
Also, if this stuff is explained in the manual can someone point it out. I have read, what I think are the relevant parts of the documentation but I do not see this behavior explained.
73, phil, K7PEH
P.S. Actually, did not TX on AM, just listening to an AM station -- had to go to dinner before I could get a turn.
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