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Motorola Radius CP200

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ve9jmc

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I have a quick question. I have a CP200 and it's having some difficulties. I'm suspecting that there may be something missing for the antenna connector inside the radio. When i remove the antenna i notice that there is no way that the flat base of the antenna connects or makes contact with the internal connector. Am i missing something here or is there a piece of the antenna connector missing? I just don't see how this would work. antenna (1).JPGAntenna connector.JPG
 
alcahuete

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It has been a while since I messed with the non d version, but I seem to recall that being the proper antenna on those radios.

Interestingly though, the official /\/\ BNC adapter for that radio looks like this, with the center pin:

pmdn4041br.jpg



I sure as heck don't ever remember /\/\ issuing an antenna with that connector on though.
 
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ve9jmc

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alcahuete said:
It has been a while since I messed with the non d version, but I seem to recall that being the proper antenna on those radios.

Interestingly though, the official /\/\ BNC adapter for that radio looks like this, with the center pin:

View attachment 148519



I sure as heck don't ever remember /\/\ issuing an antenna with that connector on though.
Click to expand...
yea i've seen those adapters in my online searches here.. and that's why it makes me wonder how in the heck is the antenna working without making a physical connection. It's got me baffled, as this portable has pretty much no range at all with the antenna attached. But if the antenna is attached and not making physical connection then it would have a crappy range.
 
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Project25_MASTR

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alcahuete said:
It has been a while since I messed with the non d version, but I seem to recall that being the proper antenna on those radios.

Interestingly though, the official /\/\ BNC adapter for that radio looks like this, with the center pin:

View attachment 148519



I sure as heck don't ever remember /\/\ issuing an antenna with that connector on though.
Click to expand...

That's not the correct adapter per the image. I'd have to go dig through my R2670 lid to find the correct one.
 
ramal121

ramal121

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Project25_MASTR said:
That's not the correct adapter per the image. I'd have to go dig through my R2670 lid to find the correct one.
Click to expand...


Got you covered...

A2.jpg

Yes the antenna connects through the threads that hold it in place. The jack is only for the adapter for testing or an external antenna.
 
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alcahuete

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Interesting. Everywhere said that the part number I posted is compatible with the CP200. But nope, the part number from the service manual is 5886564Z01. Beats me.
 
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AM909

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alcahuete said:
Interesting. Everywhere said that the part number I posted is compatible with the CP200. But nope, the part number from the service manual is 5886564Z01. Beats me.
Click to expand...
When it comes to these proprietary connectors, there's a lot of mis-information out there, especially among sellers.

@ve9jmc: How did you measure 0.5 watts out? The most common problem is the frame with the nut coming loose from the circuit board, which it is just soldered to at four points. It can also damage the trace that feeds the one point with RF, causing loss. The test jack can also be damaged. Horrible design overall, IMO.

Bonus points for anyone that can come up with a CP100d adapter for less than the 2-part ~$300 Motorola official solution.🤞
 
ElroyJetson

ElroyJetson

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Man, I hate the CP200. Worked on way too many of them. I wanted to run them all through the bandsaw, once I came to really understand them and their common problems. They're the radio that taught me what a BAD idea it is to use a micro pushbutton switch directly on the PC board itself. Saw quite a lot of them that had been ripped off the board and it invariably took the trace off along with it. A no fixer.

It's one of those radios where, if your palms are a bit sweaty, you can feel the ground battery contact shock or burn you while you're transmitting if it's set to a high enough power level.

The antenna screws into the mount which is the RF launcher. It's just a stud mount. The port on the board below it is for use with the RF adapter so as to be able to get a calibrated power measurement.
 
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AM909

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AM909 said:
Bonus points for anyone that can come up with a CP100d adapter for less than the 2-part ~$300 Motorola official solution.🤞
Click to expand...
Just to clarify, I meant "antenna port adapter".
 
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