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TK-790 Issue

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croft7b

Newbie
Joined
Nov 9, 2011
Messages
2
We have recently put a TK-790 inservice as a base station at our department. We have had some issues getting the radio to function properly. All issues fixed except now we are unable to transmit, we upgraded our power supply, prior it would shut off when trying to transmit. Now it will break squelch but unable to transmit a message. Any help would be greatly appreciatted.
 

12dbsinad

Member
Joined
Mar 15, 2010
Messages
1,121
It sounds like the first power supply either had a problem or was too small and was folding down when trying to transmit. What is the amp rating of the new power supply? What does it now do once you try to transmit? does it still shut off? Beep at you? Does the TX light come on? etc...
 

Av8tor56

Member
Joined
Jun 29, 2011
Messages
72
Location
Roswell, NM
Also, check the fuse. Recently had a fire truck in that had it's 790 refusing to power up, powering up and refusing to transmit, and having features like scan suddenly acting up. It was just a bad fuse. As soon as we replaced the fuse the radio was fine.
 

croft7b

Newbie
Joined
Nov 9, 2011
Messages
2
The new power supply is 50amp. It stays powered up now. The issue is we are unable to transmit audio, it will break squelch and that's it
 
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