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Kenwood TK-380 won't transmit

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KD9FAL

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I have a Kenwood TK-380 that gives a tone when the ptt is pushed and it will not transmit. I have 9 other radios with the same codeplug in them so it is not that. Anyone have any ideas what I should do. Thanks in advance
 

mmckenna

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Is it programmed outside of its specified frequency range? Might be the VCO not locking.

Does the radio stay on, as in the channel name still showing on the LCD display when you TX? If not, could be a low battery and the radio restarts. Have you tried swapping batteries?
 

KD9FAL

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It is programmed for 443.000, but when it was programmed in the 450-460 range it did the same thing.

The channel name still shows. The battery should be good because I use it with my tk-481 and the other 9 380's just fine. I have some new batteries ordered and will try them when they come in.
 

hill

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If it gives a tone it maybe program with no transmit on that channel for receive only. If it is this way will get tones when trying to transmit.

I have a TK-380 picked up cheap that use on 440 and it seams to work fine.
 

KD9FAL

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Hill, it has a transmit frequency programmed in. I have the exact same codeplug in every radio. The only difference is the welcome message, which is my callsign with a number behind it.
 

mmckenna

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Yeah, hard to trouble shoot that remotely.

Check the programming to be sure it's not set to TX inhibit. Read it anyway to make sure it's not corrupted. These are older radios….
Check battery voltage, I think it needs to be above 5.8 volts to not trigger the low battery alert. If the battery is weak, or the low battery alart settings have been changed, then that might be an issue.
Doesn't sound like VCO unlock if it does it on frequencies well inside it's designed range.
 

matty909

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i believe there could be 3 ranges in the 380/880 radios a low 400-430? mid 450-490 and a high 485-512? have you double checked to model number on the back plate of the radio to make sure it's not a high cut trying to do ham? I have use a 450-490 tk-380 down to 440 and works. I have used a high cut no lower then 462 transmit
 
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