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P or M1225 Programming

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Johntorg

Newbie
Joined
Feb 26, 2017
Messages
2
Location
Beaufort, SC
I will be trying to program my P1225 radios. I have a RIB and will make the programming cable. I read the following on Bat labs:

Here's the pinout for the P1225 programming cable:

Looking at battery from rear contacts left to right

X1 X2 X3 X4
X2 Data Ground X3 Data Input

My question is: Do I install the battery and make contact through the charging contacts in the backof the battery, or do I leave the battery off and provide signal, ground and battery voltage through the radio contacts?,
 

BlueDevil

Member
Premium Subscriber
Joined
May 5, 2010
Messages
722
Location
WA
Are you using a homemade programming cable or a programming cable you purchased?

You would most likely take the radio off of the P1225 and use the contacts on the radio.
 

Johntorg

Newbie
Joined
Feb 26, 2017
Messages
2
Location
Beaufort, SC
Thank you both. I am using an Ebay RIB and a home made cable. I tried it through the battery and it worked fine. I had to hold both bare wires against the battery terminals, so I need to create a better long term cable setup Next step is some channel programming and converting to narrowband.
 

kb2ztx

Member
Premium Subscriber
Joined
Jul 29, 2012
Messages
502
Location
South West Virginia
I have the factory motorola programmer. It is just a charger base with another pin. I made a few of these when i worked at the shop. The board had runs to the back, but i just soldered wires to the battery tabs. Drop radio in charger base and program. SP50 did the same thing.
 

cmdrwill

Member
Joined
Mar 30, 2005
Messages
3,302
Location
So Cali
I have both the Motorola factory battery eliminator/programming cable and the Motorola 'drop-in charger' programming stand for both P1225 and SP50 radios. And being a service shop we build some very special cables and other test jigs here.

I personally prefer the battery eliminator programming cable.
 
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