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  1. P

    Drake TR-44xc

    BTW: that is just not any piece of Duct Tape, that's a specialized tool and that's it storage place! .
  2. P

    Drake TR-44xc

    Resurrected from the dead! .
  3. P

    swr problem

    :) .
  4. P

    Dentron GLA-1000b Restore

    Updates? .
  5. P

    Homebrew GU50 tube amp 10-11m

    It's a vacuum tube, treat it like one Class C (telegraph mode) Ua= 1000 V (max. 46,1 MHz) Ua= 800 V Imax. 66,6 MHz) Ua= 700 V (max. 85,7 MHz) Ua= 600 V (max. 120 MHz) Ia = 120 mA Ug2 = 300 V Ig2 = 10 mA Ug1=- 80 V Ig1=0 mA Pout=85 W max cathode current: 230 mA heater: 12,6 V/0,7A...
  6. P

    test

    test. .
  7. P

    1.0 mh Choke

    I never have seen one of those choke ever have to come into use but, you put it in just in case. My plate blocking is 2 X 465pf @40 Kv in parallel which represents about 3 ohms at frequency. .
  8. P

    1.0 mh Choke

    Got any pictures of yours? :-) . .
  9. P

    Is this a Golden Falcon???

    The amp was built by Anderson in the early 1980's, it has (probably) 8908 tubes; does yours have an external transformer? .
  10. P

    Which is better??

    GS-35b .
  11. P

    deano4570

    DC Blocking Capacitor Anywhere from 500 pf at 5,000 volts to 1000 pf (.001 uf or 1.0 nano-farads @5 Kv) will work. .
  12. P

    CB Shoot-Out in Chicago

    Did anybody here go? I heard that Charger was sending out invitation to all comers in DC Sky's-The-Limit class. .
  13. P

    Just wanted to say good bye.

    Can you take the polish sausage with you? .
  14. P

    king 750 moble amp

    Generally speaking, those vintage models had Vibrator/Switching power suppllies powered by 2n4048 PNP Transistors. The primary of the X-former was 14 volts at 400 cps while, the secondary was usually about 400-500 vac which was fed into a voltage-doubler confiiguation yeilding 900+ volts under...
  15. P

    king 750 moble amp

    What exactly are you looking for this thing to do? Are you trying to replace the switching transformer that supplies high voltage when in mobile operation or, are you converting this for Fixed/AC operation?
  16. P

    texas star 500

    Tricky CB Schematics. The schematic on that tricky site cannot be trusted, it shows a great oscillator but not the true amplifier as it is ran; important details have been omitted. When amplifiers are run with some amount of + volts on the bases it is common to use the relay to switch the...
  17. P

    PALOMAR TX-5200 QUESTION

    Yes, it is a multi-band "Amateur" amplifier but, it does not have tuned input for each band, to run that thing, you need a tuner between the radio and the amp. .
  18. P

    Palomar 310M amplifier

    Spread the coil that is coupling the driver tube to the final, you will know it is correct when you can see a peak when you tune the 50 pf cap. Follow the same procedure for the final output coil, when the plate tune gang peaks at halh mesh, you have it right. .
  19. P

    Help please with driver tube bypass

    Turn the amp off and take a long, insulated screwdriver and make sure that the high voltage is bled off. Pull the driver tube. Re-direct the wire from Pin 3 of the driver tube to Pin 3 of the final tubes. Lift L3 where it connects to the final tubes (Pin 3) and tape it off, this removes...
  20. P

    4x 4cx250b Glen amp

    Check the value of the screen resistors.