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Dak cb but no modulation help!

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kb2vxa

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OK, so what is the function of that transistor? You said it has a tube transmitter so I'm confused. You leave us clueless again.
 

darticus

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I understand that the Q203 transistor was causing the mic to mute by being bad not allowing it to give modulation. Its working fine and now I move to another DAK that doesn't receive or transmit. It does look nice all lit up and makes a very nice paper weight. Ron
 

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k3cfc

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OK, so what is the function of that transistor? You said it has a tube transmitter so I'm confused. You leave us clueless again.

The Dak mark x has the same mother board as the lafayette telstat ssb 140 40 channel side band it just has a two tube transmitter.
 
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shortride

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I'm sure those that like to tantalize people with pictures of these stock get some sort of satisfaction out of it. I use everything I have.

In order to troubleshoot any system not only does one need to know the value and plus or minus tolerance but also need to know which components can be tested while still mounted and some that have to be disconnected on one end to get an accurate reading. The average operator generally does not have the equipment nor the know how to do an evaluation like it should be done.




I bought a radio that seems to do everything right but has NO modulation. Receives good, power out good 5w, but No modulation. No hum buzz when I touch the audio pin on microphone socket. Tubes check good, bypassed the microphone gain control but no hum when touching connections. This is a DAK CB with transistor receive and tube transmit. ANY Thoughts? There are 3 - 47microfarad caps that I'm questioning but can't test and don't have any to try. see schematic pic. Thanks Ron

These old radios can be a pain to work on and get working halfway decent. Without the right stuff and experience you will really be better off letting someone that knows and is equipped to work on your Dak. I've been trying to find someone myself.
 
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k3cfc

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I'm sure those that like to tantalize people with pictures of these stock get some sort of satisfaction out of it. I use everything I have.

In order to troubleshoot any system not only does one need to know the value and plus or minus tolerance but also need to know which components can be tested while still mounted and some that have to be disconnected on one end to get an accurate reading. The average operator generally does not have the equipment nor the know how to do an evaluation like it should be done.






These old radios can be a pain to work on and get working halfway decent. Without the right stuff and experience you will really be better off letting someone that knows and is equipped to work on your Dak. I've been trying to find someone myself.

I think this radio was repaired a while ago. if you let other people work on your equipment you will never learn a thing. just an appliance operator.
 

shortride

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I think this radio was repaired a while ago. if you let other people work on your equipment you will never learn a thing. just an appliance operator.

That's true! As long as one understand the risks of a radio never working again without a lot of help. This is one of the main reasons a lot of qualified tech's don't like to work on them. I don't know........ I wouldn't go as far as to call CB enthusiasts that enjoy the hobby. just an appliance operator because they may not know how to repair their radios.
 

mrbill147

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Darticus where is the thing your talking about ?

Q203 lol i think i just saw this and also just got a dak x im in Ogdensburg and work in sparta
 
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