Bosse,
That sounds like a soldering problem. Look carefully at the soldering at
K18 pins 1 and 10 and the soldering at U1 pin 26.
You could also have a problem with the socket of U1, or a pin bent under the
IC and not properly in the socket pin. Check for continuity between K18 pin
10 and the top side of U1 pin 26 (measure with the probe right next to the
IC body). If there is not continuity (a very low resistance), you must find
out where the break in the path is.
Be certain there is good continuity between K18 pin 1 and J5 pin 1, and be
certain that all other relays on the L-C board indicate good continuity
between their pin 1 and P5 pin 1 (this is relay common).
There also is a possibility (but a low probability) that the pin 26 output
from U1 is faulty.
73,
Don W3FPR
> -----Original Message-----
>
> Strange problem with my Kat2!
>
> I can't change between ant1 and ant 2, still I hear the relay klick.
> It's seem that it is a stronger klick when switch to ant1 then
> the klick at switch to ant2.
> If I put power on pin1 or pin10, It's change between the two
> inputs of antennas!
> Anyone proposition to this problem?
>
> 73's SM6FPG Bosse
>
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