In the earlier days of all of this, frequently a rotary dial from your home telephone was used. Most of all, not only for controlling the system but making those all important (?) phone calls too.
I remember in the early seventies, someone in the Southern California area somehow managed to score a bunch of Western Electric Touch-Tone key pads. The early ones were the ten button type ... later the 12 button and, occasionally, a very rare 16 button keypad showed up. They all were made by Western Electric and worked quite well as I remember. A few of the systems I was on required the 16 button keypad, so I bought one and installed it in a Radio Shack project box. The output ran to a selector switch so I could select either the UHF GE Mastr-Pro or the UHF Motorola Motrac I was using - I had both installed in a couple of my cars at the time. Both radios were four frequency, duplexed, multiple CTCSS encode and using separate antennas for transmit and receive. I had the necessary parts for making the GE Mastr-Pro into an 8 frequency radio but that wouldn't have worked with the GE Priority Search-Lock Monitor (PSLM) Control head I was using. This was in the days of cheap crystals and rather expensive, for us, radios. Electrical systems in the cars are another story ... One car had six Motorola and GE control heads from door to door, and seven or eight antennas. Another car had a 150 watt incadescent light bulb hanging from the rear view mirror ... a map reading lamp of course. If any of you wander this direction sometime, I can show you some of these fun radios. Enjoy yourself, Neil McKie - WA6KLA "John J. Riddell" wrote: > > Greetings, "Nit-Pickers" > > Back in 1965 the Buffalo repeater WB2TLJ and the Toronto repeater > VE3RPT used "secode" tones....a single tone interupted by a > standard telephone dial to "remote control" the repeater. > This was prior to using DTMF (Touch-Tone) > > VE3KSR in Kitchener, Ont was among the very first repeaters in this > area to use Touch-Tone in 1969. > > 73 John VE3AMZ > > ----- Original Message ----- > From: "Chuck Kelsey" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Saturday, July 17, 2004 1:42 PM > Subject: Re: [Repeater-Builder] Just a couple of dB loss you say? > > | I was wondering how he "dialed" his phone. > | > | Chuck > | WB2EDV > | > | > | > | ----- Original Message ----- > | From: "Neil McKie" <[EMAIL PROTECTED]> > | To: <[email protected]> > | Sent: Saturday, July 17, 2004 8:07 AM > | Subject: Re: [Repeater-Builder] Just a couple of dB loss you say? > | > | > | > > | > If the dual tones went away. how do you remotely control your > | > system via radio? > | > > | > Neil > | > > | > Ken Arck wrote: > | > > > | > > At 10:48 AM 7/16/2004 -0700, you wrote: > | > > > > | > > > I know, now you want my study of the tone frequency > | > > > comparisons of the Bell System Touch-Tone plan? > | > > > | > > <---Naaah. Dual tones went out with 62 Nash Ramblers :-) > | > > > | > > Ken > | > > ---------------------------------------------------------- > | > > President and CTO - Arcom Communications > | > > Makers of state-of-the-art repeater controllers and > | > > accessories. http://www.ah6le.net/arcom/index.html > | > > AH6LE/R - IRLP Node 3000 > | > > http://www.irlp.net > | > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
