On 10/25/2019 9:26 AM, Steve London wrote:
Thanks for the tips on measuring isolation, Wes.
Measured a few switches I had laying around. Old B&W round switch. 70 dB
@ 3.5 MHz, 60 db at 28 MHz. Not bad, considering. Array Solutions 2
antenna Stackmatch. 45 dB @ 14 MHz. Hmmm.
73,
Steve, N2IC
The legacy switches like the B&W shorted the unused ports
to ground as a "lightning protection" feature. There was
some switch advertised as "Protax" that had this.
I believe for a wafer switch like this, it basically costs nothing
to do it. With relays, it does cost something.
Rick N6RK
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