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Search results

  1. S

    Paradynamics pdc5

    Thank you Geekster!
  2. S

    RF Gain?

    Generally,the rf gain increases the receiver sensitivity to pick up weaker signals.If you turn gain down you will only hear the stronger,nearer signals-if you turn it up you will hear weaker,more distant radio signals.Most people keep gain high especially when trying to talk skip.
  3. S

    REPAIR COBRA 142gtl

    I will replace the buffer transistor-if that doesn't work the radio goes on fleabay as a fixer upper and I buy a new Galaxy 959.
  4. S

    Inductor coils?

    Would bad inductor coils cause symptoms like weak RX and TX? Are the inductor coils near the driver [L34,L32,L33] supposed to be black looking and able to turn on the wire?This is in a Cobra 142GTL.These are the only parts that look like they might be burned in the radio.Everything else seems to...
  5. S

    "Ultimate CB repair manual"

    This thing is advertised as a book even novices can use for fast and easy cb repairs-I got it and it certainly is not for novices!Sure,it has some valuable information-if you're a tech and can understand all the gobbledegook!No diagrams-just a lot of text and some schematics I could have gotten...
  6. S

    REPAIR COBRA 142gtl

    Thanks for the advice DTB!I will look for a bad resistor or capacitor.
  7. S

    REPAIR COBRA 142gtl

    I forgot to mention it is a very clean,unmodified radio-the tuning coils are still sealed with wax but it appears that the original 1306 driver was replaced with a 2166-I don't think the different driver would cause rx problems?
  8. S

    REPAIR COBRA 142gtl

    Switch kit-My 142 has weak receive and weak transmit.I can only hear very close stations and tx is only about 2 watts.I replaced IC5 because I was told it was a common failure in the 142.Now if it was just tx I would suspect a blown final or if just rx a bad FET1 or front end transistor.There is...
  9. S

    Paradynamics pdc5

    I bought this meter but the 100 watt scale does not seem to work-no difference from 10 watt setting.I looked inside and wire going to switch seems bridged between 2 globs of solder-is this right or sloppy soldering from factory?
  10. S

    REPAIR COBRA 142gtl

    I'm trying to fix a 142 myself-the local tech wants $50.00 an hour plus parts!I'm trying to find someone who has a Sams photofacts CB219-it seems this volume is hard to come by.I know I could get it from the sams website but I hate to pay so much for something I would only use once.I already...
  11. S

    Weak 142 GTL

    Thanks for the reply-I will try to fix it myself because I could buy another radio for the money a tech would charge.This is what happens when you get a radio from Fleabay!
  12. S

    Weak 142 GTL

    Already posted in tech section but I thought I would try here also-142 with weak receive and transmit? I replaced IC5 but no improvement-could I have both blown front end transistor and blown final?Schematic shows 1306 driver and 1969 final but I have 2166 driver with 1969 final-could this be a...
  13. S

    142 GTL Bad Final?

    My 142 has weak receive and transmit-I replaced IC5 which I was told was a common problem with these radios.Replacing IC5 has made no difference-still weak rx and transmit only about 1.5 watts according to my cheap watt meter.My question is would a bad final or driver also affect receive?The...
  14. S

    Cobra 142 GTL

    Thanks for the reply-I am one of those"screwdriver"experts just trying to get my radio working.The radio does have a 1969 final but I have no idea if it's good or not.I'm hoping the new IC solves the problem.
  15. S

    Cobra 142 GTL

    Well,I bought a new IC5 [mb3756] and will see what happens.The radio is in nice condition and I am determined to fix it.I already replaced an audio IC in a Cobra 29LTD that I bought for $5.00 and now it works great-I even installed a roger beep in the 29 and now it sounds like an export...
  16. S

    Cobra 142 GTL

    I have a 142 with weak receive and weak transmit.I see that the 1306 transistor was replaced by someone with a 2166 transistor -could this be the problem?The 2166 is rated at 6watts while the 1306 is 16 watts. I also know that IC5 is a common problem with these radios-should I try replacing IC5...