On Mon, 26 Mar 2007 02:35:51 GMT, David Hooker wrote:
Hello all,

I'm trying to make a carfinder, where a pocket-sized, keyring-attached
transmitter sends a signal to a car, the car sends a reply, and the
carfinder shows some kind of signal strength indication. Do this as
the operator turns in a circle, and he should have an idea of where he
left his car in the carpark.

You realise, don't you, that in a large parking lot filled with cars
(that's why you can't see yours - isn't it) you will be surounded by a
multitude of large RF reflectors?

Use your ears.
Honk the horn.
Your ears will be more directional than any
RF-with-tiny-directional-antenna-at-150mcs solution could be.

Or, get an amateur radio license and mount a large, honkin' 80M mobile
whip on it.
Use your eyes -- the *most* directional.

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
38.24N 104.55W | @ config.com | Jonesy | OS/2
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