R C ) writes:
Hi, I'm looking for a small, 2m FM fixed frequency TX design for a
backup telemetry link on a model craft. I've seen designs based on
discontinued Motorolla baby-monitor ICs, but simple varactor/tripler
designs seem less common. Weight/size are important, and I'd like
output around 1-2W. Duty cycle will be fairly low. There is 4.8V or
12V available already; 4.8V is likely to be noisier, as it drives the
servos. 12V is prefered.

Look in older books or magazines. Thirty years ago, such FM transmitters
were common in the ham literature. There isn't much sense in using
ICs for such transmitters, and synthesizers hadn't come into play,
so the transmitters were nothing but a crystal oscillator followed
by multipliers. Of course, for compactness you'd want to find something
that started with a relatively high frequency oscillator, say 48MHz,
so you wouldn't need all the multipliers.

There is bound to be something in the ARRL handbooks from that period,
at the very least.

Michael VE2BVW