• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.

Search results

  1. B

    Cobra 2000 GTL PLL MB8734 off frequency

    Hello All, I just popped in a variable capacitor and with a slight tweek of it 10.240 MHz appeared on my frequency counter . Mission accomplished ! The original capacitor C86 18pF measured 16.2pF. I did put in a new crystal before this small modification . That brought the frequency up to...
  2. B

    Cobra 2000 GTL PLL MB8734 off frequency

    Thanks everybody for the great information on this topic .
  3. B

    Cobra 2000 GTL PLL MB8734 off frequency

    Thanks I will check that out . At the very rate I will check them with my capacitor checker and see if the values are correct.
  4. B

    Cobra 2000 GTL PLL MB8734 off frequency

    I have another 10.240MHz crystal coming in the mail . I will put that in and see if it helps. In the mean time... Will following the synthesizer alignment steps have an effect on the issue with pin 8 being off frequency ?
  5. B

    Cobra 2000 GTL PLL MB8734 off frequency

    Hello, I am working on a Cobra 2000 GTL. I am starting to align it or check that it is aligned. The first step is to check (TP13) pin 8 on MB8734. The service manual says to check for 10.240 MHz. I get a reading of 10.238 MHz . Is this ok or does it need to be exact ? What would cause this ? Two...
Top Bottom
Back