Motorola Astro XTL 5000

[Mikebits]

Well, I made the mistake of putting my job background on my resume, so now my boss has asked me to install these new fancy 800 MHz radio's into out rescue rigs. For $3k a radio one would think the documentation would be better, but alas it is not.

I am puzzled about the dashed line in the attached photo. No where does the manual explain what the dashed line portion is, despite the Note.

So if you look at the image, what do you suppose the dash line represents? It can't be wire or it would short out the switch.

View attachment 61803

Almost forgot, here is table 2-1 as referenced in diagram. Guess I been out of electronics too long

View attachment 61804

 

[JimB]

Mike

Have a look at the attachment, that should explain it.

A couple of other points:

Check that you are not installing a 12v radio in a 24v vehicle.

The point marked "chassis ground" adjacent to the transceiver must have a low resistance to the battery -ve connection.
This should be OK on a welded monocoque body, but a fabricated body on a specialist vehicle may not have good electrical connections between panels.

JimB

 

[Mikebits]

Thanks JimB. that makes perfect sense, your a genius. We have four 12v batts in parallel on the rig. I will have to check the OSHA reg book on how the radio should be wired. Being an emergency vehicle I would think power should be as you wired in option 2.

Thanks

 

[JMW]

If you have never done this, I strongly suggest you seek professional help. I have seen the following, after checking the wiring 4 ways to Sunday, drilling a hole through a 12 volt bus. Installing an antenna so that it breaks all the fluorescent tubes in the firehouse. Having the ABS system fail. Getting alternator whine that will drive you out of the apparatus. The Astro in the nomenclature means it is a "digital" capable radio. Therefore it has a whole new set of parameters that your "fathers" radio never considered. Motorola has an extensive service network, you should definitely take advantage of it. Even if you are an experienced stereo installer in luxury cars, this is whole new ball game.