Joe, Doing it on the repeater or base freq would allow other users to open the gate if one did not have the code. I like the garage door approach, but having longer range has it advantages and of course disadvantages.
I should ask, do the users now have DTMF mikes. These are not cheap, but easy to install. 73, ron, n9ee/r --- In [email protected], [EMAIL PROTECTED] wrote: > > But, if I did this, it would not be an "off the shelf" product and I would end up being the support repair for the units. There may be several of them. > > They want to use the talk around frequency to activate the gate. > > joe > -------------- Original message ---------------------- > From: "Dick" <[EMAIL PROTECTED]> > > Joe: > > > > Probably one of the cheapoest ways to do this would be to get an el cheapo > > rptr controller and connect it to a VHF rcvr. The company can then buy DTMF > > mikes for their radios. If it were me, I'd set up a separate VHF freq or > > the same > > freq with a different PL for the gate actuator. I prefer the seprate freq > > so they > > won't broadcast the gate actuator code all over the world. > > > > 73, > > > > Dick W1NMZ > > > > ----- Original Message ----- > > From: [EMAIL PROTECTED] > > To: [email protected] > > Sent: 26 May, 2007 13:03 > > 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 > > >
