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Kenwood TKR 850-1 Ver.1 Repeater

N4ADI

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I have a Kenwood TKR 850-1 Ver1 repeater. It does TX full power but it has a busy green LED on constantly, with no local audio. It does not repeat, but it does read and write. Any ideas where to start.

Joe
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ramal121

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Set the repeat function in the channel information. There is a squelch selection in optional features, maybe it will get rid of the constant green led. Receive speaker audio needs a jumper plug in the white connector on the back.
 

N4ADI

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I tried what you suggested with no luck. i finally put it on the bench the transmitter is a mess 3.2 khz off freq pl dev1.2 transmitter is not spurious at full power. I guess someone was playing with this repeater before I got it . time to go check voltages see where that leads me.

Joe (N4ADI)
 

tweiss3

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Is there something set for the DB25 on the back that has COR/PTT set to low? If nothing is connected, no voltage, PTT becomes constant.

I'd give it a good once over on the bench with the service manual.
 

ramal121

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Hooboy, sounds like you're going to be really into this. Sure sounds like someone was diddling where they weren't supposed to.

Not sure what you're going to find with a volt meter. I would do a full alignment with the proper test equipment. Do you have a service manual?
 

N4ADI

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I am using the service manual from repeater builder. we have our 9vdc and 5 vdc on board . but we do not have disc audio ic 629 has vcc but no audio in or out. i am working on it a little bit at a time.
Joe
 
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