[Elecraft] APF for K3

[Erik Basilier]

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