Good morning all,
An introduction is in order... This is Gary, N4TXI.
Being new to repeaters, I've been doing a lot of research and
reading though the LBI's available in repeater-builder.com (thank you
to all who contributed, btw). I have learned LOTS. For my first
VHF "learning" repeater I plan to use a couple GE Deltas (an SX for
transmit and an S for receive due to the helical filters). First
question: has anyone experienced issues with turning the PA on the
110-Watt delta transmitter down to 50 to 60 Watts with a fan for full
duty cycle? I'm concerned with spurs of course. Any other gotchas
or advice to give? I don't mind learning from my mistakes, but I'd
rather learn from others'. :)
Secondly, more often than not I have read that people toss the
Channel Guard boards in these radios for HAM use. Why is that? I
dowloaded the LBI for the board in the Deltas and, frankly, I really
like what I've read. Anyone actually use the board for tone
squelch? I'm curious why someone would go with something like a TS-
64 when the CG board accomplishes the same task.
Incidentally, I am considering replacing the micro/prom in the
Delta with a micro of my own (I fancy the Atmel line, though any
would do.) From the LBI's, it will be a rather easy task to talk to
the synthesizer and associated I/O for a dedicated TX or RX repeater
conversion. Using the existing Channel Guard board would definitely
be a bonus. As you can tell I'm loving these radios (and similarly,
the Phoenixes) so far...
73, Gary
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