Not a great choice. SWR gets increasing nasty above 15M because the
construction uses chassis as signal return rather than carrying it on
the circuit board. It's a two-sided board, but the "ground" layer is
broken under the traces that carry the RF, so return current can't flow
on that layer. I didn't have the heart to try to measure crosstalk.
5-6 years ago, I bought several of them for antenna switching, and
learned that the hard way. I modified them by paralleling copper braid
from the connectors to the board and following the RF paths through the
relays across the board as best I could. That reduced the SWR by about
half.
I've since replaced all of them, and they're for sale. :)
73, Jim K9YC
On 3/17/2019 6:15 PM, Bill Steffey wrote:
i use topten a/b coax switches,,,, to switch between the kpa500 &
acom 2000 ... one in front of the amps , one in back .... also
have them switching between K3 & an Icom....
https://toptendevices.com/products/ab-station-selector/
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
