Mark, The Public Mobile tel's used 600 / 1500 Hz alternating when a mobile was dialed. The first signal sent was a 600 followed by a 1500 Hz tone to clear the selector, then the number was dialed. This was the old YJ,YK,JK etc stations Tx on 152.xxx Mhz. The receiver in the base station was 5.26 Mhz higher in freq. Western Electric made a big beast of a decoder with an wheel in it for programming and later here in Canada we used an Electronic selector made by Scantlin Co
(I used to fix those brutes back in the early 60's while working at Bell Canada.) John VE3AMZ ----- Original Message ----- From: "Mark Holman" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, July 17, 2004 8:49 PM Subject: Re: [Repeater-Builder] Just a couple of dB loss you say? | This sounds like the way the old mobile Radio Telephones used I think was 20 | khz. ( ?? ) tone and the rotary dial , and looking at the control in that | fashion old RT used the 152-157 Mhz. offset I think if I have it right. | | Mark A. Holman, CRO, AB8RU | [EMAIL PROTECTED] | | ----- Original Message ----- | From: "John J. Riddell" <[EMAIL PROTECTED]> | To: <[email protected]> | Sent: Saturday, July 17, 2004 8:01 PM | Subject: Re: [Repeater-Builder] Just a couple of dB loss you say? | | | > 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 | > | > > | > | > > | > | > > | > | > > | > | > | > | > | > | > | > | > | > | > | > | > | > | > Yahoo! Groups Links | > | > | > | > | > | > | > | > | > | > | > | > | > | | > | | > | | > | | > | | > | | > | Yahoo! Groups Links | > | | > | | > | | > | | > | | > | > | > | > | > | > | > | > Yahoo! Groups Links | > | > | > | > | > | | | | | | | Yahoo! Groups Links | | | | | | 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/
