[Elecraft] Receiving with Skimmer SDR on K-3 transmit antennas

[John Simmons]

I've done exactly that! The only issue is that the local transmit signal 
is very strong. Although I haven't done this yet, it'd be nice to use a 
relay to insert some additional attenuation during transmit.

-de John NI0K rural Debs, MN

N4ZR wrote on 6/7/2021 8:49 PM:
> I would like to be able to connect my SDR (an RP-16) to my 
> transmitting antennas, and have it automatically muted when my 
> K3/KPA-1500 goes to transmit.  The idea is to have the best possible 
> antennas available for Skimming while active in contests.
>
> It seems to me that I should be able to connect a splitter between the 
> RX Out and RX In ports on the K3, and use that to feed the SDR by 
> pressing the RX Ant button  (at a cost of ~3.5 dB loss, of course). 
> Question is, what happens when I go to transmit - is the RX Out line 
> muted so that my SDR won't try to spot me? Ideally, I'd think it would 
> be, but I've groped around in the K3 manual and Fred Cady's book, and 
> haven't found a concrete answer - can anyone help?
>