| > I'm looking for a single transmitter that will control all of my two
| >channel (thrust vector steering) planes, plus any three or four channel
| >planes I acquire in the near future. Most are on the 27mhz channels, but
| >two are on 49mhz, IIRC. Is there a reasonably priced three or four
| >channel unit with either multiple installed crystals or a synthesizer
| >that can produce the necessary frequencies? Needless to say, it would
| >also have to have a high-capacity rechargable battery, or accept NiMH cells.
| No: you can't get a set that will do the different frequency bands... or if
| they claim to, it will be a bad compromise.
Oh, it's possible to include two different RF stages in a TX and let
you switch between them.
What he wants could be made ... but nobody makes it. It could be
custom made, but then it wouldn't be reasonably priced.
| As radio receivers are so cheap now, fix on one frequency, say 35Mhz and
| replace the receivers. Find a 35meg Tx with many model memories.
Since he says 27 MHz and 49 MHz, and said `thrust vector steering'
he's obviously talking about the `toy' R/C things like those sold at
Wal-Mart, and these don't have replaceable RXs.
The thrust vector steering could be done with some mixers, and
computer radios also usually give you multiple memories, but you'll
never find any computer radios on the 49 MHz band, unless you get
somebody to modify a 27, 50 or 72 MHz one, I guess. And then the toys
are usually AM, so that makes it even harder -- you'd have to modify
an AM module. Or build one out of the TX for your plane -- that would
be doable, but hard for the layperson.
Ultimately, what it boils down to is this -- if you want one TX for
all your planes -- buy better planes first :)
Doug McLaren, firstname.lastname@example.org
I'd rather just believe that it's done by little elves running around.
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