APF for K3
Posted by
K7TV on
Oct 28, 2010; 6:46am
URL: http://elecraft.85.s1.nabble.com/APF-For-K3-tp5671688p5681486.html
Wes Stewart wrote:
"The crystal filter in it (and the 75A-1 and a dozen other receivers I've
had) worked the same way. We've come full circle."
I feel that this discussion hit the nail on the head only when it combined
the environmental filtering with the peak as in the FT-1000D. Going back to
the bad old days of a peaky xtal filter in a super wide environment is
something I don't wish for. The KX-1 is my favorite portable for its
lightness, but it reminds me of those old rigs: Either the peak is too
narrow or the environment is too wide. A square bandpass as offered by the
K3 without APF, or even the 500 Hz square bandpass offered by my FT-817, is
far better when it comes to making this operator comfortable.
73,
Erik K7TV
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