[Elecraft] K2 - Problem With KAT2 Installation

[Peter Barville]

Hi Don

Don't want to take up your time, but thanks again.

I doubt there will be a problem on the K2 control board, as it runs 
happily without KAT2 and/or with KPA100 installed.

I did check the J8 cable carefully right at the outset, but can find no 
sign of shorts or open circuits.

I've not looked at removing R6 yet, but will do when I have a chance.

I really am puzzled by this - not to say frustrated!

73 Peter G3XJS



Don Wilhelm wrote:
> 
> Peter,
> 
> In that case, I would suggest looking at the control board to see is 
> there is something awry there causing a path to the AGC circuits below 
> P4.  Also you might check the VRFDET signal line on the KAT2 - hint, 
> removing R6 should disconnect the VRFDET signal line but leave the cable 
> connection present.
> Check the cable for internal shorts between the conductors with an 
> ohmmeter - that might happen in storage if the cable was sharply bent 
> and insulation creep occurred.
> 
> 73,
> Don W3FPR
> 
> Peter Barville wrote:
>> Many thanks once again Don.
>>
>> I agree with your thoughts, but KAT2 is currently a 'stand alone unit' 
>> with the RF connectors not connected. I'm only connecting J8.
>>
>> So, like you, I am at a loss to understand what is happening.
>>
>> Even with a very strong (and loud) signal at the Rx input, no audio is 
>> present when J8 is mated with P4. Just a full scale reading on the S 
>> meter.
>>  
> 
> 
>