[Elecraft] KX1 RX deaf after KB3080 installation

[Bruce Grubbs]

--------------
> 
> 
> No. You have it right. Those marks on the KX1 PCB are correct for the KXB30
> and incorrect for the KXB3080. 
> 
> I suspect L6 is open. Have you ohmmed it? 
> 
> You moved L6 to the underside of the KX1 PCB as part of the KXB3080 install.
> Is it in the right holes on the bottom? 
> 
> You should see about 1 k ohm from L6 to ground with the RF gain at minimum
> on either end of the inductor.
> 
> With the RF gain at maximum, it should show about 1 to 2 ohms to ground. The
> inductor itself has a DC resistance of about 1 ohm so it'll be about 1 ohm
> higher from one end than the other.
> 
> Ron AC7AC
> 
> 

L6 is good, it measures 1 ohm. But I'm seeing only 1 to 4 ohms from min to max 
RF gain. That tallies with what I'm hearing- the RF gain has almost no effect 
on received sigs. So I'll look for whatever is pulling R1 down.

Thanks again- it always helps to have a second set of "eyes".

73
Bruce
N7CEE