When the comparison is figured out, don't forget the security issue. Do you REALLY want a scheme where anyone will have access to open your doors?
Joe M. Ron Wright, Skywarn Coodinator wrote: > > 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 > > > > > > > > Yahoo! Groups Links > > >
