Through off-reflector correspondence, it appears Bob has a point.  On my K-3 (un-updated), I have a Mini-circuits splitter between the RX Out and RX In jacks, feeding an Airspy HF+ to support the N1MM spectrum display window.  Using an XG-3, I see about a 3 S-unit drop in signal level when routing through the splitter, instead of the 3-4 dB I'd expect.  I've tried another splitter, with identical results, so I have no idea what's going on.

73, Pete N4ZR
Check out the new Reverse Beacon Network
web server at <http://beta.reversebeacon.net>.
For spots, please use your favorite
"retail" DX cluster.

On 12/4/2021 3:41 PM, Bob KD7YZ wrote:
Hello Elecraft List

I recently got my K3 back from Elecraft. They'd upgraded it to K3s.

I used to be able to run a cable from the Rx in out area on the 
right-upper-rear as I face it.

That gave me antenna without the threat of RF into my SDRPlay.

I tried Rx In and Out then pressing RX on teh front, but the S-Meter drops 5 
S-Units.
Yeah, signal does go to thje SDR device, but at a huge loss to the regular 
operations.

What am I not seeing here ?


--
73,
KD7YZ Bob EM88LL

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