[Elecraft] SDRPlay connection to K3S

[Bob McGraw K4TAX]

My measurements indicate the SDR Play input Z is well above 50 ohms and no degration  in signal strength was noted. 

Bob, K4TAX


Sent from my iPhone

> On Jul 17, 2018, at 9:16 AM, Joe Subich, W4TV <lists at subich.com> wrote:
> 
> 
> You will need a (hybrid) splitter ... connect the common port of
> the splitter to the RX ANT Out jack, connect one output of the
> splitter to RX ANT IN and connect the other output of the splitter
> to the SDRPlay antenna jack.
> 
> A splitter is necessary to keep one receiver from loading the
> other resulting in loss of sensitivity.  The receivers (K3, SDRPlay)
> do not have identical input impedance across their range and one
> receiver or the other can become (relatively) deaf on certain
> frequencies depending on the characteristics of the input circuits.
> 
> There are those who will say use a BNC T ... that may or may not
> be satisfactory depending on cable lengths and receiver input
> characteristics.  Unlike a hybrid splitter, the BNC T connector has
> no isolation between output ports which allows spurious signals
> generated in one receiver to be coupled directly into the other.
> 
> 73,
> 
>   ... Joe, W4TV
> 
> 
>> On 2018-07-17 9:16 AM, Steve Muenich wrote:
>> Hello gang,
>> Is there a proper port on the K3S to connect a SDRPlay that would allow for sharing the main antenna while receiving, then be disconnected and isolated when the K3S go into transmit?
>> Thanks
>> Steve, NA5C
>> K3S 10121
>> Sent from my mobile device
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