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Recent content by Cable Guy

  1. Cable Guy

    Tantalum Caps VS Electrolytics

    I do, but some only replace them if failed. They dont come in a recap kit so you will need to order them. As I understand, when tantalums were in their infancy, they were prone to failure due to manufacturing processes and electrolytic composition. I don't know what years that timeframe...
  2. Cable Guy

    Toshiba 2879 Red dot vs Non red dot. What's the difference ??

    I check mating surfaces with a flat edge or razors edge (hey yo!). A thick pane of glass, some fine grit sandpaper assortment and elbow grease can get you a mirror finish, perfectly flat. That's how I deck processors and heatsinks. A small drop of thermal compound will cover a large area of...
  3. Cable Guy

    Losing receive with amp connected

    Desire to learn, humility, modesty and some thick skin. These boys 'round here CAN be brutal, but that's usually the exception and not the rule. It's like a big family, assuming you can get invited to the reunion.
  4. Cable Guy

    FREQUENCY AND TIME FOR CONTACTS

    I don't seem to hear Columbia for some reason but Everytime I swing the beam around I stop on your azimuth and call out on the usual channels. I'm still trying.
  5. Cable Guy

    Making my problems look bigger........

    I followed your link, saw it offered a $6 off coupon. I just bought one. (I'm a sucker for cheap anything) ((I need help)) I will let you know what I think of it.
  6. Cable Guy

    Looking for Sams CB info on the Cobra 142 GTL cb base station...

    I bought the PDF direct from Sam's some years ago.. looks like Brandon has you covered tho. If what you need isn't in there, I can upload the PDF for that radio. edit: I had 2 copies, the first they sent was too dark so I asked them to rescan the document and they obliged. I've included both.
  7. Cable Guy

    Cobra 148 GTL variable deadkey mod

    Thanks, I have that dual final upgrade printed out somewhere, I might try it. I guess whoever upgraded the modulator didn't get that far, as it only has 1 final in it. Yes, there are silkscreen designators for the supporting parts of the second final. I can start a new thread instead of...
  8. Cable Guy

    Cobra 148 GTL variable deadkey mod

    Okay, it has the different transistors in those spots, but tr52 I can't make it out, and i havent located r295 yet. The face just says 148gtl and the rear plate is gone. I think it's a dx model, but the faceplate is wrong. It has to be, after doing some looking around the Internet. Not important...
  9. Cable Guy

    Cobra 148 GTL variable deadkey mod

    Let me check, but the board says pb010 and there is no reference to dx on the face. I think this may be a Frankenstein radio. Figures.
  10. Cable Guy

    Cobra 148 GTL variable deadkey mod

    I opened it up to verify, it does indeed have a large 2sb817 PNP pass regulator. HOWEVER, the schematic calls for a 2sa1012 PNP which is smaller. I suppose someone replaced it along the line, it is an old radio, but it IS a 148 with a PB010 board and, so far as I have gathered from that, the MK2...
  11. Cable Guy

    Cobra 148 GTL variable deadkey mod

    I have only had the privilege of peeking inside one 148, and it's near (not exactly) identical to the exports I seen. It does have the large pass regulator. I assumed it would take the diode peak swing mod as it is so similar. Maybe the large transistor has been changed, but it's still a larger...
  12. Cable Guy

    Cobra 148 GTL variable deadkey mod

    Guess not, I thought the mk2 148 was the original export model copied by others. Sorry. I have a 148 with the large pnp pass regulator. Maybe it was a mistake.
  13. Cable Guy

    Cobra 148 GTL variable deadkey mod

    Would that be the resistor/diode mod, popular with the exports, assuming it is a later mk2 model?