[Elecraft] APF Results at an Old Timer's shack

[Wes Stewart]

To this old dog's ears there is way too much ringing.

Even in my EME days I never felt the need for these super narrow filters.  I used a passive 200 Hz wide filter centered on 600 Hz.  A few hours of listening to noise in a too-narrow filter and you start hearing things that aren't there, especially with some distortion thrown in, and ringing is distortion.  

Today I prefer a lower beat note (~450 Hz) and a couple of hundred Hz BW is fine most of the time.

Wes

--- On Thu, 11/4/10, JAMES ROGERS <w4atk at bellsouth.net> wrote:

Well, I just wasn't sure I would use it, I had such good results with  
just the DUAL PB function. So I sought out the weakest signal I could  
find this morning, R5ZZ, who was not copiable here, but I could hear  
some Ws working him. I dialed in the APF and there he was, and  
copiable. So mea culpa. I am now a convert. Old Dogs can learn new  
tricks.

73s Jim, W4ATK
JIM ROGERS
w4atk at bellsouth.net
http://web.me.com/jimrogers_w4atk