[Elecraft] APF

[Sam Morgan]

1st of all let me be clear, I was merely quoting from my notes that I
had copied from a post (or web site?) that Dusty K3WC wrote

that said
yes it was the Shift knob Dusty was speaking of
calling it the Shift Fc (frequency) knob

when I turn mine it says (in the VFO B window)
APF *0.48     (my pitch is set for 480hz)
so I have to turn the Shift knob until I see it say APF 0.46
meaning it's at 460hz or 20hz below my default pitch of 480hz

sorry I'm not as good as Dusty at explaining these things
sm

On 12/7/2013 7:04 PM, Scott Monks wrote:
> Sam; Your explanation is really good Sam, but it seems that something
> doesn't follow for me.
>
> cut...========================
>
>> 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

-- 

GB & 73
K5OAI
Sam Morgan