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Broken M1225 Adapter

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wheatonfire

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I have a Motorola M1225 with a broken antenna connector. I believe the adapter is the PL-259. From what I can see, it appears that the radio was pushed back during an install and the adapter and 'hook-up' on the back of the radio were broken. I need to replace both pieces but have never done this before. I'm not sure what the parts are that I need to fix it. Sorry for the newbie question, this is the first time I've dealt with replacing these pieces. Thanks a lot for the help.
 

WX9EMS

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The connector itself is a mini-UHF. Every parts list that I see lists 0980476U01 as mini ant connector (but does not show up in parts explosion...odd). Why don't you share a picture with us of the back of the radio. Along with the ant connector, is the power connector(3080486U01) or the 16 pin (0980472U01) connector damaged? Replacement of these parts should be pretty straight forward with some basic de-soldering/soldering skills, you will end up disassembling the radio for the most part; not for the weak at heart! Take your time and pay attention to detail. If you question your ability, you should seek assistance or send it to someone who can do it for you.

Good luck!
 

wheatonfire

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Pics are attached. The rear of the radio is bent and the adapter piece is broken. I just need to replace both pieces, just not sure what the replacement parts are. Thanks for the help.
 

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WX9EMS

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Eliminate the adapter and the PL-259, and get a good quality crimp-on mini-UHF connecter from tessco.com or equivalent. The antenna connector on the radio still looks in good shape...seen worse.

That adapter adds an extra inch or so behind the radio. Now it is possible that the coaxial cable has been damaged too (being flexed too sharply or kinked) at the connector. In an environment where space is tight, adapters can make things more difficult.

I hope this helps.
 

SteveC0625

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Eliminate the adapter and the PL-259, and get a good quality crimp-on mini-UHF connecter from tessco.com or equivalent. The antenna connector on the radio still looks in good shape...seen worse.

That adapter adds an extra inch or so behind the radio. Now it is possible that the coaxial cable has been damaged too (being flexed too sharply or kinked) at the connector. In an environment where space is tight, adapters can make things more difficult.

I hope this helps.
If the coax and PL-259 are not damaged, it may be easier for the OP to just get one of these to replace the broken adapter as there is no soldering, cutting, or crimping required in the field:

Mini UHF to SO-239 24" cable for Motorola Mobile Radios | eBay

(I know that eliminating the adapter and replacing the PL-259 with a mini-UHF will give slightly better performance, but reading the original post again suggests that just getting a better adapter may be better in this particular situation.)
 

WX9EMS

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If the coax and PL-259 are not damaged, it may be easier for the OP to just get one of these to replace the broken adapter as there is no soldering, cutting, or crimping required in the field:

Mini UHF to SO-239 24" cable for Motorola Mobile Radios | eBay

(I know that eliminating the adapter and replacing the PL-259 with a mini-UHF will give slightly better performance, but reading the original post again suggests that just getting a better adapter may be better in this particular situation.)
Valid point Steve, I didn't even think of a pigtail adapter. For ten bucks he really can't go wrong; as long as coax going into PL-259 has not exceeded the cable's bend radius rating (OP, can read about that here http://www.picwire.com/pdfs/PIC_Technical_Articles/PIC_TA1_Bend_Radius.pdf) keeping in mind that there may be damage that you cannot see.

Should check SWR after replacing adapter, and if SWR is higher than before; odds are coax is damaged. On the other hand, there may be no damage at all to the coax, the adapter could have been pushed sideways or in some other way, and it does not take much force to break some adapters. Had a TNC to N adapter that broke apart with little effort. Anyhow, no real reason why you could not go with the adapter Steve mentioned, just be sure to examine the end of the coax for a kink or any thing like that, and if there is; it is most likely damaged and should be repaired by putting a new end on it that matches the radio antenna connector.
 

wheatonfire

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Apr 26, 2012
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I am going to get the mini-UHF. Is there a specific type I need to look at? I found this one:
Larsen MPLCRIMP Mini-UHF Male Crimp for RG58 | TESSCO

Also, the connector on the back of the radio is bent at the end. It's kind of difficult to see in the photo. I'm afraid that the connector from the antenna will not screw properly onto the radio. Not sure if I should try it first or just get a new one.
 
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