installing isolator on a transceiver
Dave Platt wrote:
In article ,
MTV wrote:
Maybe just an RF isolator in the AC line?
That would be solving an entirely different problem.
At many sites, it's necessary to install an isolator/circulator
between each transmitter and antenna. This prevents strong RF signals
from *other* transmitters at the site from coming back down the
feedline into your energized transmitter, intermodulating with your
own signal in the transmitter's finals, and bleeding nasty intermod
products back out up into your antenna.
This is a bit tricky to do if your radio doesn't have separate
"transmit out" and "receive in" ports. If you stick an isolator
between a single-poort transceiver and its antenna, the receiver won't
hear the incoming signal very well at all.. most of the received
signal power will be circulated away into the circulator's dummy load.
You either need to open up the transceiver and separate out the TX and
RX ports, or figure some way to bypass the circulator (e.g. a pair of
relays) when receiving.
Thanks for the info
MTV
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