[Elecraft] K3S with an external receiver

Bob McGraw K4TAX rmcgraw at blomand.net
Thu Aug 24 07:56:47 EDT 2017


I use the more simplistic approach as Don suggests.   I have my SDR Play 
receiver connected via this manner.   No external switching is required 
as that port is protected during transmit. It works great and allows me 
to monitor my own signal as well.

73

Bob, K4TAX


On 8/23/2017 11:25 PM, Don Wilhelm wrote:
> Jeff,
>
> The only way to do that properly is to use a 3dB splitter external to 
> the K3S and the 590SG.
> Of course, that is only for receive.  On transmit, the 3dB splitter 
> would have to be removed and the input to the 2nd receiver protected.
>
> The K3S does that internally with the addition of the SubRX, and it is 
> done automatically if the SubRX is sharing the antenna with the main 
> RX.  You would have to provide the same switching externally to use an 
> external receiver.
>
> The other way (more simplistic) is to connect the other receiver to 
> the K3S RX ANT OUT jack.  That allows the external receiver to listen 
> on the same band or a lower band than the K3S is tuned to. Signals on 
> a higher band than the K3S is tuned to will be attenuated because the 
> K3S Low Pass Filters are ahead of the other receiver.
>
> 73,
> Don W3FPR
>
> On 8/24/2017 12:00 AM, JEAN-FRANCOIS wrote:
>> Hi,
>>
>> Is there anybody ever use an external receiver with a K3S as a second 
>> receiver… to act as a second receiver that can share the same antenna 
>> the K3S use or similar setup???
>>
>> The reason here is I still a have my Kenwood 590SG that I could 
>> enable TX Inhibit for safety, and use it as a second receiver only. 
>> It’s an excellent backup radio. I wondering if I could enhance my 
>> setup if possible by using spare gears.
> ______________________________________________________________




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