[Elecraft] APF

Scott Monks cq_dx_de_aa0aa at yahoo.com
Sat Dec 7 20:04:31 EST 2013


Sam;
     Your explanation is really good Sam, but it seems that something doesn't follow for me.

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>Turn on the RIT control (tap the RIT button). Next, lower the RIT 
>frequency -20 Hz. (You must have CONFIG:PB CTRL in the config menu set 
>to .01 to move in 10 Hz steps). If your pitch is set to 500 Hz, then the 
>tone of the CW should now be 480 Hz. Next, turn on the APF by HOLDING 
>the DUAL PB button. Adjust the APF using the SHIFT Fc Knob (now APF 
>control). Move the APF down -20 Hz to match the CW signal. Once you have 
>the signal in the center of the new 480 Hz tone you should hear that the 
>CW signal pops up about 5 or 6 dB....
>Ok, I did this, first setting my pitch at 500 Hz, which actually even cut out some ringing!  I got the station centered, etc., turned RIT down -20, activated APF, but then the problem began.

I am not sure what the "SHIFT Fc Knob" is--if it is just the regular "Shift-Lo" knob then this doesn't do anything for me when I turn it. Is this the right knob?  Do I need something turned on in CONFIG for it to work?


I have had my K3 a little more than 1yr., and I sort of remember that MAYBE I could move the passband once at first, but I my be remembering bad!

Thanks for the help.  73


Scott  

AA0AA; XE1/AA0AA


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