[Elecraft] [K2] [KAT2]

[Kristina Wright]

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.