Batboard

I'm hoping someone has some info on the TRN9249A Site interface module for the MSF5000 analog stations. For some reason the 68P81026E75 manual skips right over it but has all the info on the DC and Tone boards. Is there a manual supplement or this or perhaps a .pdf file floating around somewhere ? Thanks.

I've never heard or seen this before. Could you provide some photos and a better description so the rest of us can learn? Thanks!!!

My understanding is that this board is used as a local interface for the MSF5000. I have even seen it referred to as a way of connecting 2 stations back-to-back.

Link :

http://www.midcoast.com/~pbrush/Picture ... %20001.jpg

Several years ago there was a post that asked:

"...I have used the "Motorola Method" of Wildcards and such to get audios and PTTs in and out, but I hate to have to screw around with an accesory shelf and find wildcards to do it, and when your all done there is no Audio Level adjustments between the radios.

Is there such a thing as a simple interface with audio adjustment out there?..."
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I posted this response:


"In the commercial world of Motorola systems, it is often necessary to interface two stations to each other. Motorola calls this an 'RA' interface situation.

It is a misconception that the use of a wildcard in an analog MSF5000 is the "Motorola Method" of RA interfacing.

There is an actual RA interface kit which consists of a circuit board with transformers for interfacing an additional pair of 600 ohm transmit and receive audio lines. The board also contains audio circuitry with transmit and receive level controls. Further, it contains mux-bus circuitry to provide COR and accept PTT. This board is the proper way to interface an analog MSF5000 to just about anything.

The board is called a 'Site Interface Module'. It can be installed in the main control tray in place of the DC or tone remote board or it can be installed in an expansion tray so that the station can have both types of control simultaneously.

The part number of this board is TRN9249A. ..."

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The board is NLA, however you can still order the manual from MOL. [ 6881115E11]

Thanks for the info.... MOL still shows it for $14.70 "MAN,INSTR, RA INTFC MODE" (kinda steep for a small manual, but whatever.....) I'll take another look around the shop.