I would be sure to turn the power down and put a fan on it for repeater use. the heat sink on the beast is pretty big though.
Numbers. TLD19428 TRD1804BB TCN4727A Does this mean that the tx is 142 - 150.8? On Fri, 28 Mar 2008 12:05:10 -0700 Mike Morris WA6ILQ <[EMAIL PROTECTED]> wrote: > At 11:19 AM 03/28/08, you wrote: >>I have a Compa Station with the model number >>C73RTB-1106C. >> >>I am looking for some help figuring out what this is >>split, etc and how to make it into a repeater. > > The 73RTB is a 90-100w intermittent duty (20 % duty > cycle) Micor base built for the 136-174MHz frequency > band. An RCB would be continuous duty. > The 1106 is a carrier squelch wireline controlled base. > If it was a 3106 it would be PL. Adding tone is a >simple > process once you get the parts. > See the bottom half of this page: > <http://www.repeater-builder.com/micor/pix/micor-mobile-and-base-model-numbers.gif> > > And remember 20% is twenty seconds of transmit time > every 100 seconds. That's not to say that it won't > transmit for 20 minutes, but it will get hot doing so. > > I do not recommend making an intermittent duty radio > into a repeater unless: > a) it's a learning experience (i.e. don't make it a > prime repeater for an area). > b) you have spares for when the PA deck will blow up. > c) you run it at reduced power with some sort of > thermostatic controlled cooling. > > The Micor series was built for a specific range of that >band, > such as 136-150, 150-162, 160-174. I may not have the > edge frequencies exact (all my manuals are in storage), > but that's close. If you have a high range radio, >forget it. > A 150-162 can be stretched, a low range is designed for > 2m. > > Look at the assemblies for a three letter / 4 digit >number > and then at this table - > <http://www.repeater-builder.com/rbtip/micorvhfboardnumbers.html> > >>First things first is that there is no power leads hooked >>up except for the one to the control board box. I can >>see >>where there are places for heavy cables from the power >>supply to the transmitter. Is there seperate power for >>the receiver or does that come from the ribbon cable? > > Ribbon cable? > You must have a really old unit. Most of the ones I've > seen are the unified chassis system > Look for any TxD numbers and let us know what they are. > the x can be any letter, but most commonly will be R, T, >or L. > >>How can I get this thing to key up to see what the TX >>frequency is? > > Plug a microphone into the unit. > >>If I find out the TX freq can I sweep the >>recv side with a freq generator to figure out where it >>opens up? > > If the channel element is there it will have a frequnecy > label on it. > >>Are these crystal controlled or can they be adjusted to >>get the right frequency pair? > > A crystal is mounted in side a prepackaged oscillator, >called > a channel element. See > <http://www.repeater-builder.com/micor/micor-element-info.html> > If the elements are even there. > >>Thanks, >>Vern > > More info here: > <http://www.repeater-builder.com/rbtip/micor-index.html> > > Mike >
