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Old 19-02-2007, 13:37   #1
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Troubleshooting ICOM M80

Aloha all,
The ICOM M80 on our club boat does not transmit. It receives just fine and has a good strong power source. Can anyone give me a list of things to check before tossing it overboard (actually I wouldn't do that for environmental reasons)?
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JohnL
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Old 19-02-2007, 18:51   #2
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Does it actually switch to TX when you press the PTT button?
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Old 20-02-2007, 03:12   #3
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You might be interested in the “Microphone Pinout Testing” page at:
http://www.cruisersforum.com/gallery...age.php?i=1604
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Old 20-02-2007, 11:18   #4
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Aloha Radio and Gord,
Thanks. I'll try that on Friday. Unfortunately I don't get out to the boat that often.
Kind Regards,
JohnL
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Old 20-02-2007, 11:23   #5
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Radio,
How do I tell if goes to TX? Is that something I read on the indicator (screen)?
Thanks,
JohnL
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Old 20-02-2007, 11:54   #6
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You should see a TX indicator and see current draw. The speaker should also be muted.
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Old 20-02-2007, 12:28   #7
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Thanks Radio,
I'll try that on Friday. Is there something I should try if I don't see TX ind. or current draw? Just trying to think ahead.
Thanks again.
JohnL
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Old 20-02-2007, 12:55   #8
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If the above is correct, it may be a bad mic.

Make sure you are not using a remote mic. Use the one that is attached to the front/side of the radio.
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Old 20-02-2007, 13:11   #9
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Thanks Radio. Your posts are always helpful!!
Kind Regards,
JohnL
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