[Elecraft] [K2] [KAT2]

[Don Wilhelm]

Kristina,

Are you reading too fast and overlooking a whole sentence in the manual?
The 'point B' is only a visual reference.  You should actually measure 
at pin 1 of U4.

73,
Don W3FPR

Kristina Wright wrote:
> Ok, I wiggled some wires and now when I press TUNE it goes to the ATU. 
> But I still have the problem of only about 0.02 V at TP B. I've 
> checked both boards (a whole bunch of times) for shorts or unsoldered 
> pins and haven't found any.  Any ideas of where to look next?
>
> 73,
> Kristina  KE7LUC
>
>
> Kristina Wright wrote:
>>> I'm putting together my KAT2 and having trouble with the Bridge Null
>>> Adjustment (pg 16). When I first went through it, it worked fine until
>>> step four on page 17, where I got well under the specified 3 or 4
>>> volts. So I pulled it apart, checked everything, and reflowed T1. Now
>>> I'm trying to adjust C55 again, but I can't seem to get it to go to
>>> the ATU when I press TUNE. It flashes ATU briefly, then says Hi Cur,
>>> then goes to P 4.3 or so.
>>> Any suggestions?
>
> Tom Hammond wrote:
>> 1) RE-check your soldering... especially for possibly shorted 
>> connections
>>   (which do sometimes occur as a result of reflowing previously soldered
>>   joints).
>>
>> 2) Ensure that you have the KAT2 re-plugged correctly and that ALL 
>> pins of
>>   the connectors are properly plugged in.
>>
>> 3) Ensure that the 10-pin cable plug is properly plugged into the 
>> connector
>>   on the CTRL PCB.
>>
>> Can't be much wrong, but sometimes it doesn't take 'much' to make things
>> LOOK a lot worse that they really are.
>
> Kevin Cozens wrote:
>> Some simple things to check are that you have a proper 50-ohm 
>> termination on the antenna 1 connection of the KAT2. Check that you 
>> haven't accidentally selected antenna 2 while the dummy load is on 
>> antenna 1. You can work around the high current warning by reducing 
>> power to about 1 watt or so until you get the adjustment close to 
>> where it needs to be.
>
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