Biggest problem I can see is security. Anyone can receive the frequency and the tones. Simple to program a ham radio to the same freq and tone. Anybody with any radio experience will be able to open the gate(s). Might as well just leave the gates open.
--- [EMAIL PROTECTED] wrote: > 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 > > > From: John Sichert <[EMAIL PROTECTED]> > To: [email protected] > Subject: Re: [Repeater-Builder] IFR COM-120A > Manual > Date: Thu, 24 May 2007 23:11:28 +0000 > --------------------------------- lweter, I know where I can get a COM-120B manual. I am not sure what the difference is. The service manual is $50 + shipping. John At 11:09 AM 5/24/2007, you wrote: >I just recently acquired a used IFR 120A but it needs calibration and >a manual. Does anyone know where I can obtain some version of the IFR >COM-120A oeprations manual for a reasonable price if not free? > > > > > > >Yahoo! Groups Links > > > ____________________________________________________________________________________Yahoo! oneSearch: Finally, mobile search that gives answers, not web links. http://mobile.yahoo.com/mobileweb/onesearch?refer=1ONXIC
