[Elecraft] Using external SDR and a K3 as antenna splitter

[N4ZR]

I was just asking myself the same question.  There is probably a drawing 
in the Cady book, but the best explanation in the manual is in words, 
not pictures, on page 39.  In any case, you are exactly correct in your 
description of the RX Out-Splitter-RX In loop.  The only downside is a 
loss of 3-4 dB due to the splitter, and the fact that you're taking up 
the RX In jack which you might otherwise use for a receiving antenna.  
You must select the RX antenna to connect the IN/OUT loop to the main 
antenna

73, Pete N4ZR
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On 11/18/2019 11:06 AM, Dave Cole wrote:
> A few years ago someone posted a method of using a splitter, and the 
> External Antenna jacks to feed an external SDR with the direct 
> antenna, not a IF, but a wideband signal from the primary antenna...
>
> I think it was something along the lines of add a splitter, between 
> the RX Antenna in/out, and then picking off the antenna feed to the 
> SDR from an output of the splitter...   Does this make sense?
>
> Is there a high level block diagram showing the antenna pathing for a 
> K3, with the ATU installed, and how the front panel switch labeled RX 
> ANT controls the signal path?
>