Batboard

Hello All-

I just got a UHF R100 and plan on using it on the ham band. I got no documentation at all. I have searched the web and found nothing other than a few misc. "tidbits"..... no manuals. I have looked at Moto web site... yes I have an account.... and nothing there.

I need a copy of the service manual or somthing about programming and alignment. I have the RSS but no cable yet. Is it best to make one from BL site or buy one? Where to get one?

Thanks for the help........
Ken - N7QQU

Make the cable from the diagram on BatLabs. Requires a reaaaaaly sloooow computer, 286/12 is what the software was designed for.

I have the manual, but the R100 being a German Maxtrac, it has a lot of parts lists that you may not need.

Do a search here and there are several posts on the R100 repeater. I find the most comon problem is poor heat disapation on the PA. And, yes. I do repair them.

The cable is easy enough to make if you have some soldering skills. The Batlabs site has the schematic and a picture of the completed wiring. What's really nice about the R100 is that you don't need a RIB.

If however, you need it to a 9 pin com port instead you have two options, buy a 25pin to 9pin adapter, or just build it into a 9pin connector to begin with.

To do that just change the pin numbers shown on the Batlabs schematic to reflect a 9 pin connector instead of a 25 pin connector using this as a reference. This shows the wiring in a 9pin to 25pin adapter. So, just take the pin number from the batlabs schematic and find it on the 25 pin list and use the matching number in the 9 pin list for building it into a 9pin connector.

DE9S DB25P
Pin # Pin #
1 8
2 3
3 2
4 20
5 7
6 6
7 4
8 5
9 22

As for the service manual, i don't have one, or the part number! So hopefully someone can come up with that info.

The R100 is not a broadband product like the Maxtrac - so - unless yours was already being used close to the frequency you are going to put in it - you will need to align the unit after you program it.

Your best bet is to have a manual, but while you are waiting for one to show up on ebay or at a hamfest - this will get you started:

MCR100 ALIGNMENT

Transmitter:

VCO Adjustment.
1. Connect a DC voltmeter [input impedance 11 megohms or greater] from the steering line test point [SL] to ground.
2. Key the station. Adjust TX VCO control C221 for a reading of 6 VDC.

Output Power Adjustment.
1. Adjust Output Voltage Set control R8 on the power supply regulator board for an A+ equal to 13.2 VDC +/-0.1 VDC.
2. Key the station and adjust High Power Set control R453 for 25 Watts [25 Watt stations]

[there are several more steps in the book that can be followed for a complete alignment]

Reference Oscillator Adjustment
Key the station and adjust 2 PPM Frequency Control R163 [on the transmit RF board] for the exact transmit frequency +/-100 Hz.

Receiver Adjustments:

VCO adjustment.
1. Connect a DC voltmeter from the steering line test point [SL] and ground.
2. Adjust RX VCO control C201 for a reading of 6.0 VDC.

After you set your RX steering line, put your voltmeter on the local oscillator test point [LO - near FL3]. Tune FL3 for maximum [2.5 to 3.5 VDC typical]

Then you can tune the front end filters FL1 and FL2 for best SINAD. Finish up by fine tuning FL3 for best SINAD.

LOCATIONS:

With the RF board positioned so that the legends are readable, the receiver coax enters at the top left [J1 labeled RX]. You will see three groups of cans with screw adjustments. Left to right these are FL1, FL2, and FL3. FL1 and FL2 are the RX RF filters. FL3 is the injection filter.

With the cover off the shielded compartment, C201 is at the top right of the upper half of the compartment and C221 is at the lower right of the upper half of the compartment. R163 is to the right of the SL legend in the top part of the lower half of the shielded compartment. [TX rf only]

XMO,

What is the part number on the service manual that you got that info from?

The first manual Motorola supplied with the R100 was 68P84828D54.

That was later replaced by 68P81071E50.

I take it the R100 manuals are NLA then? I tried both part numbers just to see if anything come up on MOL and got nothing.

"I take it the R100 manuals are NLA then?"
___________________________________

Afraid so, but consider that those manuals are dated 1986 & 1987.

Thanks for all the efforts and information.

I guess I need to stop trying to "do it all" myself and have an expert get this going for me. javascript:emoticon(':D')

I am busy now with a Systems Saber III and a Astro Spectra. That is enough to learn about for now..........

Once I get a frequency pair coordinated I will send it off and have it programmed and aligned.

Thanks for the help......
Ken - N7QQU

Nice thing about the R100, the transmitter Exciter and the Receiver can be removed from the chassis to send out for programming and alignment. This of course saves a lot on shipping charges.

I do have a full R100 test setup and am able to work on just the RX and/or Exciter. When I do the alignment, I also add the mods to the VCO stage in the RX and Exciter.

I can also program the EEPROMS without having to have the RX or Exciter here. Stay-Con also has replacement EEPROMS available for the R100's.

R100 questions?, we have answers!

Any idea to edit eeprom R100 with Universal Eprom Programmer?
I have rx & tx eeprom, but don't know address of frequency.


smile@2006