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I purchased a Cobra 148 GTL (made in Malaysia) that dosn't talk or recieve.

I have a Cobra 148 GTL (made in Malaysia). I have opened the case and found a green wire, that comes from the dynamike, that is loose from the mic pins. Also, there is a blue wire, that comes from the PC board at R246, that is not connected, either. And a grey wire, that goes into the board at R237, that is loose. If I could get a diagram of the wireing, not just a schematic, I can solder them back where they go. Also, the schematics, that I have found on the internet, have been for the Chinese and Phillipine models.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: No modulation in AAM only mode. Needing a schematic.

if the transmitter produces power output with modulation on SSB but NOT ON AM then the AM Pass Regulator is defective, more times than not.

Posted on Jun 10, 2009

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SOURCE: No regular 4 pin cobra mic will work on my cobra

switch 1 pin to 2 and 2 pin to 1. and 3 pin to 4 and 4 pin to 3

Posted on Nov 21, 2009

  • 1 Answer

SOURCE: I need to know if it's possible to convert the

5 pin to 4 pin as follows, from the Cobra website.
1.->2 Audio
2.->1 Shield and common
3.->4 RX
4.->also goes to pin 1
5.->3 TX

Posted on Apr 26, 2010

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Ironfist109
  • 3018 Answers

SOURCE: i need schematics for cobra 148 gtl




  • When you get to the link click on "Click here to start download from MediaFire.." and the PDF will download onto your computer.

  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.


Regards, Tony

Posted on Oct 13, 2011

Ironfist109
  • 3018 Answers

SOURCE: schematic diagram of cobra 148 gtl cb radio china made

  • Locate the MB8719 chip that is right behind the channel selector. Wire a SPST switch from pin 10 to ground and another from pin 11 to pin 12.


  • Channel Chart
  • Position 1: sw1 down, sw2 down
  • NORMAL CHANNELS

  • Position 2: sw1 up, sw2 down
  • 15=26.815 20=26.885 25=26.925 30=26.985(ch3)
  • 16=26.835 21=26.895 26=26.945 31=26.995(ch3A)
  • 17=26.845 22=26.905 27=26.955 32=27.005(ch4)
  • 18=26.855 23=26.935 28=26.965(ch1)
  • 19=26.865 24=26.915 29=26.975(ch2)

  • Position 3: sw1 up, sw2 up

  • 1=27.605 6=27.505 10=27.555 14=27.605
  • 2=27.455 7=27.515 11=27.565 16=27.475
  • 3=27.465 8=27.535 12=27.585 20=27.525
  • 4=27.485 9=27.545 13=27.595 23=27.575
  • 5=27.495

  • Position 4: sw1 down, sw2 up

  • 1=27.605 11=27.725 21=27.855 31=27.955
  • 2=27.615 12=27.745 22=27.865 32=27.965
  • 3=27.625 13=27.755 23=27.895 33=27.975
  • 4=27.645 14=27.765 24=27.875 34=27.985

Posted on Nov 09, 2011

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