[Elecraft] KAT2

[Trevor Day]

Thanks Guys, I've just located the problem;  a solder bridge at C45 on 
the control board.  This produced the ground connection seen below.

Trev G3ZYY

In message <ojlltkB5SR68EwO6@southwestuk.demon.co.uk>, Trevor Day 
<Trev@secornwall.com> writes
>Hi All,
>Just completed the KAT2 and have come up against a small problem. The 
>unit appears to be permanently 'stuck' in the antenna 2 configuration 
>although everything else appears to work perfectly (it loads a random 
>wire on all bands 160 - 10m).
>The front panel indicates Ant1 or Ant2 when the button is pressed but 
>nothing changes;  there is no 'click' from relay K18 either.  At this 
>stage I don't know whether the problem is the relay or the switching 
>voltage from the pic.  Pin 26 (RC7) appears to be at earth potential ie 
>shorted when checked wrt chassis.  Visual checks appear correct
>
>Is there a way of operating these relays whilst in cct but with power 
>off eg by applying a battery derived 5v ?  I would like to confirm that 
>the relay is the problem if possible.
>
>Failing that, any other ideas?
>
>Thanks,
>Trev G3ZYY #2637

-- 
Trevor Day