[Elecraft] Connecting the K2/100 to the KAT100

[Don Wilhelm]

John,

You apparently have a short in the KPA100, most likely on the 12CTRL line.

You can find this line on the schematic entering the KAT100 at J3 pin 8.
Follow the line to determine what other points it connects to and check them
all until you find the short.  I do not know what the resistance to ground
should really be on this line, but it certinly must be significantly higher
than zero.

73,
Don W3FPR


> -----Original Message-----
>
> I am attempting to use the KAT100 for the first time and a new
> homebrew G5RV.
>
> Just finished the cabling and went successfully thru calibration
> steps.  Then, I put the covers on the KAT100.  When I turned on the
> K2, a click and no other response on K2, no LCD.  No LEDs on KAT100
> either.
> Disconnect pwr to KAT: no change, disconnect RF between: no change,
> disconnect RS232, now all is OK on K2.  Made the obvious check of the
> cable on both ends, and repositioned the leads.
>
> I will continue to check for shorts in the cable after I get back
> from work.  However, I thought I'd ask whether there might be
> something else to look at, as well.
> I used adhesive pads on the bottom panel of the ATU.
>
> Thanks,
>
> John
> AB8O
>