MOCOM 70

ICEMANTIM · Post by **ICEMANTIM** » Wed Jan 02, 2002 9:48 pm

Hello does anyone know how to duplex a mocom 70. I would like to make an backup repeater for our ares group. Thanks Tim

Will · Post by **Will** » Wed Jan 02, 2002 11:54 pm

We did that back in 1980 or so on a uhf unit.
It involves some wireing and some alignment and is too involved to go into here.
So the answer is yes it is possible with some technical experiance need.

Jonathan KC8RYW · Post by **Jonathan KC8RYW** » Thu Jan 03, 2002 6:00 pm

Yes, the Mocom70 can make a great backup (or even primary) repeater.

First things first: get a manual. Hopefully Ma'Motorola still has them for sale.

Also, I found out something about this radio you should know.

According to the Data Radio Database (http://www.rocler.qc.ca/burt/moc70vhf.html):

If you feed the audio at the mic input, it will be pre-emph'ed to 12db/octave, rather then 6db/octave. So, you'll have to work around this, by de-emph'ing the audio before the mic input by 6db/octave. This isn't very hard to do, an ARRL book should tell you the circuit and formula.

Have fun!

Will · Post by **Will** » Fri Jan 04, 2002 5:49 pm

KC8RYW, this is very valuable info, this may be why the M70 repeater made from a mobile sounded mushy. We took the audio after the squelch stage to go to the mic input.

Jonathan KC8RYW · Post by **Jonathan KC8RYW** » Mon Jan 14, 2002 5:52 pm

I noticed no one had really posted much other help on duplexing the Mocom70, so I searched my head for every last thing I could think of to help.

The Mocom70 uses the Micor Control Head. SO, if you find a control head for a Mitrek or Micor it will work on the Mocom70.

I suggest you could read some of the pages at http://www.repeater-builder.com/rbtip/ on the Micor and Mitrek to get a general feel of what to do. The Mocom70 is probably different in some ways from the Micor and Mitrek, but they were all made around the same time by the same people (Motorola.)

This is a lot better then no info.

Monty · Post by **Monty** » Mon Jan 14, 2002 9:09 pm

Hi:

And for those willing to due some hunting, Motorola did infact make a Mocom 70 Repeater !! with a factory acc'y Board too.

Had a Sq control, Volume Control, and a Repeat on/off switch mounted in the Center Frame.

I do not know the exact Model, but I am sure
someone out there may know.

MS

EC-7 · Post by **EC-7** » Mon Jan 14, 2002 9:43 pm

Does anyone have a manual? If so, can you scan it and email it or could I send you money to copy and mail it to me? I have two UHF radios that I'd like to try to duplex and make into repeaters. If I brake them, oh well, I got them cheap.

Cowthief · Post by **Cowthief** » Tue Jan 15, 2002 10:39 am

Hello.

The Mocom 70 CompaStation, CompaPro, is the repeater,.
The Mocom 70 can use Motrac, or system 70 control heads, the radio cable is Motrac style, not Micor.
The Moto' RanchPhone is the mocom 70 in mobile full duplex.
The Moto' Pulsar II IMTS 'Phone is based on the Mocom 70.

Manuals can be had, try the comm center El Paso, TX.

Thank You.

Big BOB · Post by **Big BOB** » Tue Jan 15, 2002 2:37 pm

Get a MITREK. They make a great little repeater. Easy to convert and people have been using them for years with great success.

CHEFA2001 · Post by **CHEFA2001** » Tue Jan 15, 2002 8:28 pm

If you need a head and cable for the Mocom 70, we just pulled one from a pickup and the cable and head are in better than avarage condition. Let me know if ya need it, & good luck.

EC-7 · Post by **EC-7** » Wed Jan 16, 2002 9:29 pm

I will dig both of mine out of storage in the next couple of days, when I get a chance. I've got some time off work. Anyone up for helping me with instructions on how to duplex it? If so, I'll make a web page with instructions and pics for anyone else who wants to toakke on this project.

Anyone have a manual? Anyone know the pin-out diagram for the control head? My #'s on the wires are hard to see.

_________________
KC8GRQ Mark Rodgers
[email protected]

<font size=-1>[ This Message was edited by: EC-7 on 2002-01-17 00:31 ]</font>

Jonathan KC8RYW · Post by **Jonathan KC8RYW** » Thu Jan 17, 2002 7:14 pm

On 2002-01-17 00:29, EC-7 wrote:
I will dig both of mine out of storage in the next couple of days, when I get a chance. I've got some time off work. Anyone up for helping me with instructions on how to duplex it? If so, I'll make a web page with instructions and pics for anyone else who wants to toakke on this project.

Anyone have a manual? Anyone know the pin-out diagram for the control head? My #'s on the wires are hard to see.

_________________
KC8GRQ Mark Rodgers
[email protected]

<font size=-1>[ This Message was edited by: EC-7 on 2002-01-17 00:31 ]</font>

Check out http://www.batlabs.com/mocom.html . Okay, maybe don't. It only has the mic pinout.

But, it does have an email to someone who might be able to help. Try it.