"Gert Been" wrote in message
...
Ehh, talking about "Decent" multiplexers: decent multiplexers have
isolated
inputs, yours don't.
I just connected one of yours to a differential NMEA talker output. I can
now hear all NMEA data on my SSB!!
While trying to find out what's wrong, I found that all inputs on your
multiplexer have the B terminals connected to ground!!! NMEA inputs are
supposed to be isolated. Your grounded B terminals on the inputs
effectively
short-circuit any properly designed talker. Was it that hard to add 50
cents
worth of optocouplers?
Ouch!!!
Meindert
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