OT-- need plans for a wireless switch

From: nerdware_at_ctgonline.org <(nerdware_at_ctgonline.org)>
Date: Thu Jul 17 10:58:37 2003

I'm posting this here because, on the average, you guys are pretty
smart.

I'm trying to put a push-to-talk switch on the steering wheel of my
car so I can key the 2-meter ham radio while keeping both hands
on the wheel. I've got a little boom mic and have built an interface
box, but how to mount the switch has me stumped.

I picked up one of the velcro aircraft ptt buttons, which mounts
nicely, but even with the relatively short turning radius of my
Subaru it's still a good number of turns lock-to-lock and the coiled
cord has a tendency to get snagged in the space between the
wheel and steering column.

My next thought is to use the aircraft button, but with a tiny
transmitter/battery mounted on the wheel, with a receiver mounted
under the steering column with a keying relay. Hit the button, the
relay turns on, let up, the relay releases.

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.

Any suggestions?

I know this isn't directly related to Classiccmp, but it IS related to
ham radio and electronics, and ham radio and electronics are
related to hamfests, and hamfests attract computer collectors, so
there. I just made the connection.

Thanks.



Paul Braun
Cygnus Productions
nerdware_at_ctgonline.org
Received on Thu Jul 17 2003 - 10:58:37 BST

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