[Elecraft] [K2] K2's frequency counter cable with KPA100 installed

[Don Wilhelm]

  Bruce,

Remove the cable.  You will not hear those spurious signals, they are 
transmitted ones.
It would be OK to store the cable inside the K2 and connected to the 
plug on the control board, but you need to be sure the other end does 
not make contact with the circuit parts.  Tom Hammond fashioned a clip 
to hold the end of the cable secure at the rear of the left side panel.  
If that interests you, I think you can find information at www.n0ss.net.

Yes, you will need to remove the KPA100 to change the filters, but you 
should not have to do that often once they are set up correctly, they 
will stay put.  If you have just been experimenting with the filters. I 
suggest you get a copy on Spectrogram and set the filters up once and 
for all.  You can find Spectrogram and setup and "how-to" information at 
Tom's website too.  I have additional information in the K2 Dial 
Calibration article at my website www.w3fpr.com that may help you as well.

73,
Don W3FPR

On 1/26/2011 5:44 PM, K1FFX wrote:
> Page 55 of the KPA100 manual recommends removing the K2's frequency counter
> cable
> when the KPA100 is installed, since leaving the cable in "may" cause an
> increase in the
> amplitude of spurious signals.
>
> Since the manual says "may" and I'd really like to leave the cable in, what
> are people's
> experience with this?  Do you hear a notice-able increase in spurious signal
> amplitude?
>
> If the answer really is "yes, remove the cable", is there any other way,
> short of
> disassembling the K2/100 and inserting the cable, to align the K2's filters?
>
> Thanks!
>
> - Bruce
>