[Elecraft] K3S with an external receiver

[Don Wilhelm]

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.