[Elecraft] XV144 transverter problem

[Don Wilhelm]

Jeff,

Your XV144 may be one of those that are susceptible to a false overload 
indication.
It should not be possible to create an overload situation with 1 mW of 
drive, although it may be possible to create an overload indication if 
the XV144 is in receive and it senses an RF input.

First check the jumper on the front panel board near the firmware IC.  
The jumper block should either be off or plugged onto only 1 pin.

Most likely, it is a false overload indication caused by noise pickup on 
the front panel COR circuit.
Remove the front panel metalwork (the board can stay connected to the RF 
board) and find Q7.
Solder a 0.1uF capacitor between the collector and emitter of Q7. That 
bypasses the noise and prevents a false indication.

73,
Don W3FPR

On 12/18/2014 2:12 PM, Jeff Uchitjil wrote:
> I just completed my XV144 and everything seems to work with it it, except it seems to randomly trip a relay in it for a split second. Like it is trying to transmit. Occasionally this will result in the overload flashing lights and I have to turn everything off and reset it. The meter on my K2 briefly flashes to full scale when this happens. I have it hooked up with the KX60XV and KIO.
>
>