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CB retards mod follow up

how does she look

  • good

    Votes: 113 100.0%

  • not bad for your first mod

    Votes: 0 0.0%
  • Total voters
    113
B

bigred222

Key Up City Radio
Aug 28, 2006
1,155
53
58
34
Stamford, CT
www.cbjunk.com
OK guys i did it. it works fine. i need a bird meter to see what shes actually doing but heres some pictures of what i did
heres a pic of where i removed the jumper
jumperremovededited.jpg


heres a picture of the combo before installation
capcombocropped.jpg


heres the whole enchilada. it was fun Is the coil spreading ok. i really didnt want to over do it.
finalpicinboardedited.jpg


Tell me what you think thanks
10-7
 

You should have used a 47uf cap.

And you did not put shrink tube or even tape around the Tip31.
it is going to short out against the heat sink.

And I don't see the ground wire coming off the pot, maybe I missed it.
 
i tried a 47uf cap and if you look on the site he says you can use a larger cap if you want to i tried to experiment. and OH yah i forgot to put heat shrink on it. ill go do that. i did put a ground wire to it its to the left of where the mounting bracket screw hole is i solderd it right to the chassis. ( it wouldnt stick to a pot)
 
That ground lead should be moved to a POT or a circuit board ground trace. The chassis and circuit board grounds are supposed to be DC-isolated, at least in the radio. You could end up with some ground loop issues the way you have it there. Also, by including a cap on your variable-power transistor, you will end up with audio distortion due to periods of 0 output (flatlining) while transmitting.
 
bigred222 said:
i tried a 47uf cap and if you look on the site he says you can use a larger cap if you want to i tried to experiment. and OH yah i forgot to put heat shrink on it. ill go do that. i did put a ground wire to it its to the left of where the mounting bracket screw hole is i solderd it right to the chassis. ( it wouldnt stick to a pot)
Click to expand...

Run the ground to one of the small metal "cans" on the circuit board....
Scrape the corner of the metal can with a razor blade, apply flux to scraped area, and use at least a 15-30 watt iron... Then it will stick just fine......
 
yeah it wasnt there i thought that was kind of strange as well. and oh. word of advice. NEVER let a soldering iron hit L20. i did and my eyes instantaniously Burned so bad it was like they were in acid. What is that thing made of. and i did it 2 times. it was the most pain ive ever indured on my eyes it was even worse than the post op after i had eye surgery(big red used to have double vision but they fixed that right up and my eyes were bloodshot for weeks)
 

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