[Motorola] Portable/Suitcase Repeater

Wed, 05 Mar 2003 23:21:51 -0500

Shawn

It has been my experience with MX-3xx radios that to convert from one range 
to another requires the replacement of the PA modules in the transmitter 
and the receiver front end as a minimum. Usually the filters have to be 
changed also. With the correct test equipment and a lot of time, the 
modules could possibly be converted. At $5.00 each for a complete radio at 
the hamfests, it is hardly worth the effort to do a conversion. Motorola no 
longer supports the MX-3xx and most users are dumping them onto the surplus 
marker.

This looks like a synthesized radio part number. Do the radios have MX300S 
in red on the top of the radio? If so, do the radios still have the memory 
and processor installed. From the frequency range, this was a federal 
radio. For them to legally dispose of the radio it has to have the channel 
determining elements removed. On the synthesized radio this would be to 
remove the memory from the top of the processor. In a lot of cases, the 
tech also removed the processor.

I wish you luck! I might have some of the correct range modules if you find 
that you really want to proceed.

73
Glenn
WB4UIV

At 12:48 AM 3/5/03 -0500, you wrote:
>Anyone have a service manual for a model P44SXS3180BT repeater based on 
>the MX300 portable?  I have one in the 408-413 range and would like to get 
>it running well and maybe tuned to the 440MHz range.
>
>Thanks,
>
>Shawn
>KB8UDE
>
>
>
>
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