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Radius P-1225 Question

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yardbirdjr
Posts: 408
Joined: Thu Feb 13, 2003 10:04 am

Radius P-1225 Question

Postby yardbirdjr » Sun May 04, 2014 1:46 pm

Hello All!

I have a 2 channel Motorola P-1225

I was wanting to see if I could upgrade the radio to 16 channels.

And what it would take to do this

I thought maybe it was like a GP-300 remove the switch stop and program the additional channels didn't work.

Thanks

David

User avatar
d119
Posts: 3501
Joined: Tue Mar 19, 2002 4:00 pm

Re: Radius P-1225 Question

Postby d119 » Sun May 04, 2014 1:51 pm

As I recall the P1225 has a mask-programmed ROM and cannot be upgraded.

Satelite
Posts: 652
Joined: Sat Aug 12, 2006 10:43 am

Re: Radius P-1225 Question

Postby Satelite » Mon May 05, 2014 4:36 pm

Hello:
That is correct the P1225 code plug can not be upgraded like the older GP300 portables.
Pre 1994 GP300 portables can be upgraded to 16ch but a 1995 and newer build of the GP300 portable can not be upgraded as Motorola removed the address lines in the code plug needed to upgrade the GP300 as I was told.
Satelite

CircleBat
Posts: 170
Joined: Mon Oct 08, 2007 3:11 pm

Re: Radius P-1225 Question

Postby CircleBat » Wed May 07, 2014 1:22 pm

what we did was remove the cpu from the 2 channel radio and replace them with 16 channel cpu from scrap radios

Circlebat

AEC
No Longer Registered
Posts: 1889
Joined: Wed Dec 22, 2004 7:56 pm

Re: Radius P-1225 Question

Postby AEC » Sat May 17, 2014 1:13 pm

Satelite wrote:Hello:
That is correct the P1225 code plug can not be upgraded like the older GP300 portables.
Pre 1994 GP300 portables can be upgraded to 16ch but a 1995 and newer build of the GP300 portable can not be upgraded as Motorola removed the address lines in the code plug needed to upgrade the GP300 as I was told.
Satelite


Actually, from early 1994 and later, the 'E' series GP300/P110s could not be upgraded.
And you are correct, the address lines that were in the pre-1994 radios were removed, so you could not initialize them as 16 channel units.
http://imageshack.com/a/img841/6342/zdgq5.jpg

If you had a P110 with an 'E' in the model number, such as the one I have, then you could 'expand' it to 16 channels.
Mine is the first P110 I purchased back in '93.
Mfg. date: 93/7/29


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