OT-- need plans for a wireless switch

From: Marvin Johnston <marvin_at_rain.org>
Date: Thu Jul 17 12:02:02 2003

nerdware_at_ctgonline.org wrote:
>
> I've been Googling for a while, but most tiny transmitters are either
> for "spy" audio apps, or are multi-button jobs for garage doors and
> things like that. All I need is a simple on/off fm transmitter that
> controls a simple relay on the receiver end, preferably powered by
> a couple of AA cells or similar, and the transmitter needs to be
> hackable so I can connect the wheel-mounted ptt switch.

It should be fairly trivial and inexpensive to use a wireless FM lapel
mike. The ones I've had were about 2" long and maybe 3/4" square. The
bigger problem would be to keep interference from keying your
transceiver, *especially* if you left it turned on in the vehicle.
Adding PL encode/decode might be one fairly inexpensive way of dealing
with that problem.
Received on Thu Jul 17 2003 - 12:02:02 BST