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Motorola CM-300 vs CM-300D audio

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N0NSR

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Mar 31, 2017
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Farmington MO
I recently purchased several Motorola CM-300D (programmed in analog mode) mobiles to add to our fleet. We already have a number of CM-300 radios purchased over the past several years. Our crews HATE the CM-300D radios - they complain that the audio is not constant, that it "blares", that the transmit does not sounds as "good" as the old radios....

That said, I can't seem to recreate the problem when I'm using one of the radios. Our radio service company has checked the programming, checked them with a service monitor and verified power out and receive.... Everything is functioning as it should be.

Does anyone have any ideas? I have 3 very expensive paperweights sitting on my desk that our crews refuse to use.
 

JMINN

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Joined
Dec 18, 2007
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You might try turning off Mic AGC. It shows up in general settings when viewed in expert mode. By default it is enabled. Also in channels under transmit, admit Criteria is default channel free. It also only shows up in expert view.
 
Joined
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Location
Texas
Also make sure your old CM300's are programmed for narrowband operation and if Xpand (compander) is set on the CM300 it needs to be set on the CM300d.


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