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Search results

  1. Low_Boy

    Cobra 139 XLR Power supply Problem.

    I do know c302 once exploded because someone replaced it with a axial. I read that the rectafier can be checked in circuit. I will take the leads off and check it. It does not short to ground so that is good.
  2. Low_Boy

    Cobra 139 XLR Power supply Problem.

    Jeff that is what I thought at first. This is not like the Cobra 2000 I do not see a switch on the back of this radio. Thanks
  3. Low_Boy

    Cobra 139 XLR Power supply Problem.

    I just got home and checked out the wiring and from the power plug to the power supply all is correct. I also checked the power socket and the center pin is in it. I also checked to see if the power cord could be plugged in the wrong way and it can not be plugged in wrong.
  4. Low_Boy

    Cobra 139 XLR Power supply Problem.

    399 that would be impossible . My cobra style power cord is directly hooked to my power supply and has been used for years the exact same way no change. I will look if someone had changed something in the radio. I will check if it can even be plugged in the wrong way. I do not recall the center...
  5. Low_Boy

    Cobra 139 XLR Power supply Problem.

    So you think it sounds like the bridge rectifier? The reason I ask is it seems to test good and the radio will still work perfectly when plugged in the wall. Thanks
  6. Low_Boy

    Cobra 139 XLR Power supply Problem.

    I will admit I know nothing about power supplies. So a odd problem occurred on this radio. The power supply is working while plugged in to AC. I unplugged the AC cord and then Plugged in the 13.8V cord from my power supply and some wires burnt in the power supply of the radio. When this...
  7. Low_Boy

    meter light

    My experience is the color changing lights make a buzzing while changing colors. I bought two radios that had the color changing light and removed them. To me they seemed a bit hokey but some of the colors were great.
  8. Low_Boy

    meter light

    They Will.
  9. Low_Boy

    meter light

    It is 3 mm. And that works perfect.
  10. Low_Boy

    Cobra 139xlr

    I am in the process of trying to get one of the exact same radios up and running. First Check C179 a Tantalian Cap. The one I am working on also had a bad driver due to the Cap frying.
  11. Low_Boy

    Modern vs vintage lab/test equipment.

    I will keep this short because I am using my phone. If I feel the need I will elaborate later. I don't think you need the latest and greatest to fix cb radios as a Hobbie or sideline. Like loose cannon and tramd mentioned. And just keep in mind you are never going to make enough to pay this...
  12. Low_Boy

    Cobra 148GTL - Philippine- AUG90

    I think you are expecting too much out of a CB.
  13. Low_Boy

    I always hear buy a HF Rig for 11 meters.

    Actually I must repost and laughing as I do this. I do not talk a lot on 11 Meter anymore because most of the intelligent people are gone in my area. But I must say when switching between a Icom 718 and a CB Usually a HR2510 or a Ranger with some power behind it I am told the HR2510 or Ranger...
  14. Low_Boy

    Cobra 148GTL - Philippine- AUG90

    I have had many 148 GTL's and some do more power than others.
  15. Low_Boy

    meanwhile out in the garage part II

    I am surprised how much I can buy directly from Atlas Clausing. I will get the info to you. The one I have is I believe from the 40's
  16. Low_Boy

    HR2510 coil/glue problem

    Pay attention. Make sure you use the same amount of wraps. It may take a couple of times but you can do it. And a big magnifier will help.
  17. Low_Boy

    HR2510 coil/glue problem

    For L135 and L136 I use 24 AWG. Just a note it is hard trying to do this with a single color wire. I have not found anything that I can color the second wire with. Paint, Sharpie or Nail polish rubs off. For L34 I use 27 AWG. And for L24 I use 30AWG. It is a bit hard doing L124 with 27 AWG...
  18. Low_Boy

    Cobra 148GTL - Philippine- AUG90

    One more thought. I have had 148 GTL's that when the mic. gain is backed off a bit I get more modulation. I can see that on the Scope and power meter. Also that Rick Jackson schematic has mistakes in it.