Compa-Station?

kb0nly · Post by **kb0nly** » Wed Apr 19, 2006 7:08 pm

I have been trying to find info on this station based on model number and picture of the outside, i believe it to be a lowband Micor Compa-Station, but the model number decode charts don't match the model number enough to convince me.

These are solid state correct? Not looking to get into a tube type radio.

Model C71LHB-1100B
Trans. Type CC1045
SER # EA0664
Pri. Pwr. 117VAC

Looking at it with a local club for a possible 6m repeater project.

Post by **xmo** » Wed Apr 19, 2006 7:18 pm

Not Micor - Motrac - circa 1969

kb0nly · Post by **kb0nly** » Wed Apr 19, 2006 7:33 pm

Where did you find that info? I'm getting a variation on replies on the Motorola email reflectors that i frequent, some say Micor Compa, and others are saying Motrac.

kb0nly · Post by **kb0nly** » Wed Apr 19, 2006 7:50 pm

A couple pictures...

Rayjk110 · Post by **Rayjk110** » Wed Apr 19, 2006 8:05 pm

http://www.repeater-builder.com/rbtip/stationmod.html

That would be good information if you want to convert into a repeater project.

I was in the town's Taxi Cab Dispatch room a while back (helping a Moto install friend of mine) and saw that untill we put in a CDM1250, this is what they had used as a base radio, and it apparently worked well untill I think it was the PA finally took a dive, and would be cheaper and better in the long-run to do a Waris-Replace.

Dan562 · Post by **Dan562** » Wed Apr 19, 2006 9:19 pm

Definitely Motrash (MoTrac / MoTran) ... the one thing you will not find on the Micor or newer stations is the Orange and Red lamps. Must be a collector's item!

W6JK · Post by **W6JK** » Wed Apr 19, 2006 11:40 pm

One more point I didn't see covered... This Motrac should be solid state except for the PA.

Jeff

Will · Post by **Will** » Thu Apr 20, 2006 12:15 am

W6JK wrote:One more point I didn't see covered... This Motrac should be solid state except for the PA.

Jeff

That is correct, two tubes the driver and final. The model number given is for a 100 watt station. The receiver and transmitter are almost identical to the mobile, T71LHT1100 series. The T71LHTx100 series was the last in the Motrac line in low band, and mid band.

C71LHB1100B is a simplex base station, carrier squelch, local control.

Tube?, those things in a glass envalope that light up and get HOT.

Motrac? Motorola transistor research line.

Jim202 · Post by **Jim202** » Thu Apr 20, 2006 3:33 am

I would be willing to be that a tube replacement in the PA and this thing would be back up and running. You really had to work to kill these radios.

Problem is there are few radio techs working today that are willing to work on this type of radio. An even better statement is that there are very few techs that know how to maintain tube type radios today. The tubes are costly and getting scarse. Most radio shops just want to get them out of service and use the dead PA as a way to sell new radios.

Having grown up with tube radios, I liked them. You couldn't kill them even with most site lighning strikes. Just replace the power supply fuses and keep right on trucking. Had more troubles with the antenna system. Sure you had to replace a tube once in a while. Mostly because the receiver started to have a hearing problem. If you didn't push the TX power, the PA tubes last a long time.

Jim

stay-con · Post by **stay-con** » Thu Apr 20, 2006 3:38 am

kb0nly wrote:A couple pictures...

Heh, that's considerably newer than MY base station.

100% tubes. None of those pesky three-legged fuses.

Jeff

Will · Post by **Will** » Thu Apr 20, 2006 12:55 pm

I know a couple of techs that STILL have the manuals for the CompaStations. I remember most of the circuits because I worked on "hunderds of them".

The 'L' receiver is very good, nice thight front end. We used to try to 'spread' them for monitors, they dont like anymore than a few hundred kHz spread.

Lake Effect · Post by **Lake Effect** » Thu Apr 20, 2006 1:12 pm

This is one tech that still has manual. Worked on many and still have one or two in service in vhf

L.E.

kb0nly · Post by **kb0nly** » Thu Apr 20, 2006 2:03 pm

Well, if it's a Motrac with tubes then i think we will hold off until we can find a Micor Compa-Station or maybe even some lowband Syntor X's so i can build a repeater.