[Elecraft] SDRPlay connection to K3S

[tomb18]

HiMiniCircuits makes them. There usually are a few on ebay. 73 Tom 


Sent from my Samsung Galaxy smartphone.
-------- Original message --------From: "Dave Cole (NK7Z)" <dave at nk7z.net> Date: 2018-07-17  10:31 AM  (GMT-05:00) To: elecraft at mailman.qth.net Subject: Re: [Elecraft] SDRPlay connection to K3S 
Joe,
Got a recommendation for one commercially?

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 07/17/2018 07:16 AM, Joe Subich, W4TV 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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