Here's an easy idea that is currently in use. A police department wanted a way to open a garage door from the cruiser, other than calling the station and having them push a button. Solution was to take an old radio (Maxtrac in thsis case) laying around, install it into a metal box, bring out the PL/DPL decode indication to drive a relay and install at the site. No antenna on the radio, receive only. Programmed for an odd DPL on a low usage channel owned by the PD. Cars have a channel marked "DOOR". Cop pulls up to the door, switches to the DOOR channel and keys the mic. Door goes up. Nice quiet and painless. Something that any competent shp can easily accomplish.
Milt N3LTQ ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <Repeater-Builder@yahoogroups.com> Sent: Saturday, May 26, 2007 4:03 PM Subject: [Repeater-Builder] OT: Need to find a product to develop goodwill at a tower site(s) > Hello to All, > > I am starting to develop a future ham repeater relation with a tower > site(s) owner and recently got a request for something unusual. The > company has a fleet of VHF radio equipped vehicles. They want to pull up > to a site, enter a touch-tone sequence on the mike, and open a security > gate at the site. I could kludge together something, but would rather > find something commercially available. Anytime I have kludged something > together, I have ended up having to repair it for longer that I expected. > Something with a VHF receiver, TT decode and relay contact output would be > great. > > Any ides if this is even made commercially? I know that some > fire/ambulance departments use a similar idea to open and close the > firehouse door. Some also have the ability to control traffic control > lights on their way to a situation. > > 73, Joe, k1ike > > > > > > > Yahoo! Groups Links > > > >
