At 5/16/2006 10:58 AM, you wrote:
>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.
How 'bout the HT-220? IIRC much better sensitivity, & also a power miser @
11 ma RX current as well. I seem to see a lot more of them at swap meets
than the HT-200. Maybe because the latter have all been bought up by museums?
True mobile radios will draw a lot more current since that wasn't a primary
driver in their design, even if they're xtal-controlled. G.E. MVPs draw at
least 250 mA on RX.
Bob NO6B
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