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
