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Mods for the Cobra 200GTL

Discussion in 'CB and Export Equipment and Accessories' started by DTB Radio, Nov 4, 2005.

  1. Rogerbird1

    Rogerbird1 Active Member

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    One more thing



    Well now that I got that fixed, I need more info on the NightWatch lighting.
    This one does not light up. The meter and display lights and dims with the pushbutton control, but the NightWatch backlighting does nothing.

    I have the Schematic (Near Schematic) from CBtricks for the 150.
    Does anyone know if the NightWatch is AC or DC voltages. Anyway to Hotwire them on?

    The Nightwatch PCB is a PFS-00037-BB

    Roger
     

  2. Robalo

    Robalo Well-Known Member

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    #47 Robalo, Apr 15, 2008
    Last edited: Apr 16, 2008
  3. DTB Radio

    DTB Radio Well-Known Member

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    I'm glad to see that this thread is still seeing action this long after it was started.

    Has anyone come up with any kind of fix for the problem with blown drivers in this radio? I mean besides turning the output levels down.
     
  4. Robalo

    Robalo Well-Known Member

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    ONE MORE
    [​IMG]
     
  5. KennyD

    KennyD Member

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    I know this is an old thread but I was just searching receive mods for the cobra 200 and found this. Can you provide a little more detail about where you installed the .0047uf cap to clean up the white noise problem? maybe a pic? How well does this work?
     
  6. davew41

    davew41 Active Member

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    How can i disable the talkback on a rev 3 board where they tied it to the ECHO switch?
    as soon as you turn on the echo talkback comes on..
    this was not done like rev 1 and 2 boards where thing were added..
    This is factory tied to the switch
     
  7. sonoma

    sonoma Sr. Member

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  8. davew41

    davew41 Active Member

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    nope it is not that version this is hard wired to the echo switch itself. the best i can find
    is to lower or higher the volume by 109
    there are no traces of the other 2 types of talkback additions on this board at all.


    http://downloads.cobra.com/10meter/200GTL/200GTLtbVolume.pdf
     
  9. sonoma

    sonoma Sr. Member

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    look at the last version I left above. you posted as I was leaving the 2nd item.
     
  10. davew41

    davew41 Active Member

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    i just pulled 109 still has talkback but not as loud...
     
  11. Tim Chambers

    Tim Chambers Member

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    NPC RC mod available, did it today on a Cobra 200. 6 Watt dead key swings to 30 bird on low-power peak of 105, 20 watt dead key swings to 60 bird on high-power 135 peak. Pretty easy to keep a clean signal as well. Any interest anymore in a mod for this radio like this?
     

    Attached Files:

    Shadetree Mechanic likes this.
  12. Chipper

    Chipper Active Member

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    Hello is there any way to remove so much bass from the receiver audio I’ve tried a few different new external speakers but all the same results and it makes peoples words run together any help is appreciated thanks again
     
  13. Tim Chambers

    Tim Chambers Member

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    I will look have the schematics tomorrow, should be simply changing one or two capacitors.
     
    Chipper likes this.
  14. Chipper

    Chipper Active Member

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    Ok thanks a lot for the help on this
     
  15. Chipper

    Chipper Active Member

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    Any luck with those caps that can change the tone on the receiver
     

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