[Elecraft] Using Elecraft KPA-1500 for 2 radios

[Jim Brown]

On 3/18/2019 2:38 PM, Tom Georgens wrote:
> Admittedly 1.15:1 is not world class, and could be better, but I don't consider it unacceptable and I plan on using the switches I bought.  Are we drawing different conclusions from the same data?

Hi Tom,

Yes, we are. I was using a pair of them to switch inputs and outputs of 
a KPA500 an Ten Tec Titan. I use the KPA mostly on 6M, and what you saw 
on 10M was significantly worse there.

Another important point. It is totally unrealistic to terminate un-used 
ports for isolation measurements, because un-used ports are often not 
matched at the frequency where isolation is of concern. I measure 
isolation between ports with a VNA (the DG8SAQ VNWA3e). In the case of 
this unit, I would measure between the two outputs.

73, Jim