Turner jm 2 u +

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DX Duster
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Turner jm 2 u +

Post by DX Duster » 02 Jun 2018, 09:33

Hi guys I have got one of these mikes from eBay it’s came with a radio only issue I have is it keys up but no audio is transmitted.it’s got a new battery in it I’m at a loss to be honest any help much appreciated

Carl

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prettypolly
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Re: Turner jm 2 u +

Post by prettypolly » 02 Jun 2018, 12:48

The ceramic mic element could be broken there very hard to find if it's not that start by the ptt switch by process of elimination

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astradyne
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Re: Turner jm 2 u +

Post by astradyne » 05 Jun 2018, 06:56

Hi Carl.

If you have a multimeter try doing a continuity test on the audio wire. The JM2-U are old mic's and the wire could be broken due to age/use. Also ensure that the battery terminals are free from corrosion.
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wa10
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Re: Turner jm 2 u +

Post by wa10 » 05 Jun 2018, 09:10

Test the cartridge with a digital multimeter set to AC millivolts, whistle into the cartridge, id expect 50mv or more.

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