I never said "Micor", John, you did a nice job of jumping to conclusions.
The comment thread diverged to a generic discussion of part number prefixes, and I said "A" (as in TLA-nnnn) was under 25mhz and then I said that the first I ever saw was a carrier current tone-and-voice in-plant paging system at around 60KHz. To be complete, the RF sections inside the HF SSB Micom radios are also "A" series part numbers. I saw the carrier current system in the late 1960s or early 1970s. It was a B30<something> built in the early 1950s, housed in a black crackle finish rack cabinet with forced air cooling for the forest of tubes, a bank of over 90 large copper tone reeds, and multiple stepper switches for tone selection and lots of plug-in relays, and some plug-in-timer relays. The "final" looked like push-pull 6L6s. It was tied to the in-plant phone system (which was rotary, naturally) as an extension, and the operation was simple, and really cute. You'd dial extension 247 and it would ring one full ring, plus a little more (adjusted with the screwdriver adjust on an Agstat pneumatic timer) then answer. You'd dial the pager number using the rotary dial on your in-plant phone, and you'd hear the steppers follow the dialing (i.e. dial the first digit and you'd hear "clunk", dial the second digit and hear "clunk-ching"). Then you'd hear the two audio tones corresponding to that pager number, then you'd hear a 2175 Hz tone (yet another reed) for about a half-second, then a "click". At that point you had 9-10 seconds (another adjustable time delay relay) to speak your message, then you'd hang up (or it would hang up on you). These days you could do the whole thing in a box the size of a japanese multiband mobile, including the RF. One Atmel CPU and lots of code... Mike WA6ILQ At 02:03 PM 04/08/10, you wrote: >A Micor for carrier current paging at about 60 KHz?? > >never heard of such a thing. Please tell more??? > >------ Original Message ------ >Received: Thu, 08 Apr 2010 12:12:04 PM PDT >From: Mike Morris WA6ILQ <wa6...@gmail.com> >To: Repeater-Builder@yahoogroups.com >Subject: Re: [Repeater-Builder] Motorola Micor Part TCN1383A > > > A = under 25mhz... the first I ever saw was a carrier > > current in-plant paging system at around 60KHz. > > > > B=25-50, usually 30-50 but I've seen a few radios in the 26mhz range. > > C=66-88, originally 72-76Mhz > > D=132-174, originally 136-172, but some product > > lines were limited to 150.8-172 or 174 > > E=395-525, originally 406-420 and 450-470. > > F=800 and 900MHz > > > > I don't know what they are using for 700mhz. > > > > Mike WA6ILQ > > > > > > At 09:07 AM 04/08/10, you wrote: > > >Good suggestion, I might try that. I was under the impression that the >part > > >number starting with TLF was indicative of an 800MHz part. Now Im gonna >need > > >to try to confirm whether its 800 or UHF. :) > > > > > >John Hymes > > >La Rue Communications > > >10 S. Aurora Street > > >Stockton, CA 95202 > > >----- Original Message ----- > > >From: "DCFluX" <dcf...@gmail.com> > > >To: <Repeater-Builder@yahoogroups.com> > > >Sent: Thursday, April 08, 2010 9:02 AM > > >Subject: Re: [Repeater-Builder] Motorola Micor Part TCN1383A > > > > > > > > >They appear to be tripler / 2W amplifier sections from the Micor > > >station. Possibly UHF. > > > > > >If its like the 2W UHF version you can disconnect and sweep the filter > > >that is attached to the lid with a spectrum analyzer and that will > > >tell you what frequency it is for. > > > > > >On Thu, Apr 8, 2010 at 8:23 AM, La Rue Communications > > ><laruec...@gmail.com> wrote: > > > > Not sure if the pics will show up on the Group List, but here goes. > > > > > > > > John Hymes > > > > La Rue Communications > > > > 10 S. Aurora Street > > > > Stockton, CA 95202 > > > > ----- Original Message ----- > > > > From: "wd8chl" <wd8...@gmail.com> > > > > To: <Repeater-Builder@yahoogroups.com> > > > > Sent: Wednesday, April 07, 2010 1:42 PM > > > > Subject: Re: [Repeater-Builder] Motorola Micor Part TCN1383A > > > > > > > > > > > >> On 4/7/2010 4:31 PM, DCFluX wrote: > > > >>> "Lets get some pictures" > > > >> > > > >> Well, TLF would indicate 800 MHz... > > > >> > > > >>> On Wed, Apr 7, 2010 at 1:12 PM, La Rue Communications > > > >>> <laruec...@gmail.com>wrote: > > > >>> > > > >>>> > > > >>>> > > > >>>> Eric, > > > >>>> > > > >>>> No results as the Parts Department says they're obsolete. Duh tell >me > > > >>>> something I dont know. I was not able to get any info on the remote > > > >>>> chassis, > > > >>>> and two triplers that I have. > > > >>>> > > > >>>> TLF1053A and TLF1332A. Sorry I could not report better news. I will > > > >>>> just > > > >>>> keep scavaging unless someone else on the RB list has a similar >model > > > >>>> and > > > >>>> can share what they know....... > > > >>>> > > > >>>> Anyone? Bueller? Bueller? > > > >>>> > > > >>>> John Hymes > > > >>>> La Rue Communications > > > >>>> 10 S. Aurora Street > > > >>>> Stockton, CA 95202 > > > >>>> > > > >>>> - > > > >>>> > > > >>>> > > > >>> > > > >> > > > >> > > > >> > > > >> ------------------------------------ > > > >> > > > >> > > > >> > > > >> Yahoo! Groups Links > > > >> > > > >> > > > >> > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > >------------------------------------ > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > > > > >------------------------------------ > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > > > >------------------------------------ > > > >Yahoo! Groups Links > > >
