[Elecraft] Picked up used K2

[Don Wilhelm]

Mike,

I believe you need to do a good IF filter alignment.  There is a change 
in sidebands for 15 meters and above. due to the placement of the VFO 
above or below the received signal.

You will need the internal counter probe - if you did not receive it 
with your K2 (and it is not inside), you will need to obtain the parts 
from Elecraft.

I recommend you use an audio spectrum analyzer such as Spectrogram and 
your computer soundcard to see where the filter passband is placed.

Look at the K2 Dial Calibration article on my website www.w3fpr.com - 
part 3 of that article deals with filter alignment, although you may 
want to do the whole procedure and have good dial calibration too.

73,
Don W3FPR

On 6/10/2012 9:52 AM, Mike Bellow wrote:
> I just picked up a used K2 and have been checking it out.I think I found
> 2 issues with the radio,Receive on 15m,12m,10m is fine sounds good seems
> to be right on.On 17m and 20m the receive audio is very sharp not like
> the other higher bands,My question is where do I start to get these two
> bands back inline correctly?This is my first Elecraft and am very
> impressed with it's operation,I actually like the rec better than my new
> Ft-950.
>
>