when I key the mic the radio shuts dowwhen I unkey the mic the radio comes back on, new mic same thing. Same power souce for a year nothing new.
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kenwood 8180
- Thread starter thomasbillman1
- Start date
What mic?(kmc what?)
How old is the power supply?
How many amps is the source?
How old is the power supply?
How many amps is the source?
Sounds like it is time for a NEW POWER SUPPLY.
Hook the radio up to a car battery and see what happens.
Hook the radio up to a car battery and see what happens.
My 8180 does the same as the OP's issue. I will switch to a better power source and see if that is the solution. Thanks for the suggestion!!!
Metrofire31
Auburn-Opelika, AL
WREX563
Metrofire31
Auburn-Opelika, AL
WREX563
mmckenna
I ♥ Ø
If you have a TK-8180, it needs, at minimum, 9 amps at 13.6vdc to function properly when transmitting at high power. If running at low power, it needs at least 5 amps at 13.6vdc.
If you have a TK-8180H, it needs, at minimum, 13 amps at 13.6vdc to function properly when transmitting at high power. If running at low power, it needs at least 8 amps at 13.6vdc.
If your power supply is not capable of providing that amount of current at 13.6vdc, the radio will absolutely shut down when transmitting. It's starved for power. More power supply capacity (amperage) is OK, it won't hurt the radio.
Make sure you have a good power connection all the way to the radio. There are some crappy glass fuses out there that can become resistive without destroying themselves, at least with the brief spike of current before the radio stops transmitting, not to mention lots of ways power connections get oxidized and corroded. Stick a voltmeter probe up the radio side of the power connector and watch the voltage when you turn the radio on and when you transmit.
ak7an
Member
Antenna mismatch will do the same thing. Check and make sure your antenna system is in good order and SWR is below 3 to 1.
mmckenna
I ♥ Ø
These radios have a Automatic Power Control Circuit that controls RF power output. That senses reflected power as well as over current draw on the final amp due to antenna load. It'll automatically throttle back power output to prevent that, unless there is something wrong with the radio.
Still, always a good idea to troubleshoot the antenna system.
FKimble
Member
Classic "not enough amps" power problem! Switch to low power and I bet it will run fine, depending on your PS amperage.
Frank
Frank
