ve7ltd wrote:
> I am in the process of setting up a package to be taken to a solar site
> at 9000 feet in the rockies. I am making an internet remote SIMPLEX
> system, and I need a radio that would be good for the site. Some of the
> requirements are:
>
> 1) low current on receive
> 2) Adjustable and clean to 1 watt transmit power
> 3) stable at varying temperatures
> 4) Efficient on transmit
> 5) At least 10% duty cycle
> 6) Narrow-bandable would be an asset
Boy, it sounds funny, but I'd be hard pressed to find anything that
draws less current on receive then an old Motorola HT-200. Spec was
about 11mA squelched, 40-50 or so unsquelched @ rated audio out, IIRC.
TX was about 400-500mA @ abt 1-2W out. A 500mAH NiCad pack was spec'd to
last at least 8-10 hours on a 10-10-80 duty cycle. Lots o'drawbacks
though. Not the least of which is that ground is POSITIVE.
Seriously, look for a xtal-controlled radio if you can get away with
single-channel operation. uP's draw power...
Maybe an HT90/440?
--
Jim Barbour
WD8CHL
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