[Elecraft] Rx-In/Out used for exteranl SDR Device

[Bob McGraw]

I use a pair of BNC to BNC cables, about 4" long, from the RX OUT and RX 
IN to a "T" connector.  The 3rd port of the "T" goes to the SDR.  I find 
that the SDR input impedance, is nowhere close to 50 ohms,  is high 
enough that it doesn't load the signal on the main RX.   Again, no 
splitter required.   No loss encountered.

Yes, one does have to select RX ANT on the front panel for this to be 
active.

73

Bob, K4TAX


On 12/5/2021 11:36 AM, elecraft-request at mailman.qth.net wrote:
> Message: 22
> Date: Sun, 5 Dec 2021 17:35:46 +0000
> From: Dave<dave.g4aon at gmail.com>
> To:elecraft at mailman.qth.net
> Subject: Re: [Elecraft] Rx-In/Out used for exteranl SDR Device?
> Message-ID:
> 	<CABiKjG5c=s76xxwaxHJiiQYr+C3RtR_FYRHCb3YsN++=Xnn_=Q at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
>> I see about a 3 S-unit drop in signal
>> level when routing through the splitter
> Pete (N4ZR), what do you see with a straight cable linking in/out?
>
> I have no idea about Minicircuits splitters, but my home made one had a
> measured 3.1 dB loss at 29.7 MHz.
>
> 73 Dave G4AON