Re the Rf sense on mirage amps. I ended up just buying a coaxial relay from
RF parts and triggered the relay with a sequencer (that I need anyways for a
pre amp.)
On RX I bypass the amp completely. On TX I hard key the amp and the external
relay switches connects the amps to the radio and antenna. I'm not a fan of
the relays typically used in these amps and a real dpdt coaxial relay with N
connectors that was designed for RF use cost me less than $200.00 delivered to
my door. At times I had odd losses of RX sensitivity that I traced to the
relays in my mirage amp. I'm not picking on Mirage amps as many manufacturers
seem to use non coaxial relays in this application.
I also spent some time trying to figure out how to disable rf sense on my
mirage amp and believe I concluded that the rf sense and the vswr protection
were co mingled (I may not be fully remembering this but it appeared a non
trivial task to disable rf sense on my 300 watt amp.)
your mileage may vary.
Mark S
VE7AFZ
Sent from my iPhone
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