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Motorola XPR5550 (out of band programing?)

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I have the XPR7550 and it goes from 403-512mhz I would like the get the XPR5550 mobile radio but the splits are diffrent 420-470 and 450-512mhz. I have heard of tricking the CPS to program the 550-512mhz radio into using the lover frequencies 420-450mhz.

Does anyone have any information on how this is done. I'm guessing it just an out of band mod to allow the use of ham bands.


May 3, 2014
its an excellent question but I have not seen any details on how it could be done with todays current software programs


Forums Manager/Global DB Admin
Staff member
Forums Manager
Jun 26, 2001
Oot and Aboot
The hacks I've seen have involved editing the codeplug in memory before writing to the radio. Haven't heard of any CPS hacks yet.
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