Being out of the repeater scene for the past 7 years or so,
I need an update on what the best practices are for implementing full duplex
420 links. i.e. What works best, what is easiest to find surplus.
What radios are especially suited to implement a 420 full duplex link? I know
that Mitreks are good provided you use 4 radios, but they are hard to
find/expensive in the government version.
I implemented a low power full duplex 420 link for a local repeater club 10
years ago using Kendecom UHF receivers and transmitters and 2 mobile duplexers
which worked quite well, but the Kendecom modules are costly and they don't
attain the performance that Motorola or GE have.
Has anyone used the 6 cavity mobile surplus duplexers by Sinclair and Celwave
which have SMA connectors which occasionally show up on Ebay sucessfully? How
successful has anyone been using mobile duplexers for linking when you have a
30 watt transmitter?
Steve
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