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  1. P

    4cx600j or jb

    The gain of the tube seems to be about 18 Db. The grid dissapation of the tube is only 1 watt which means, it has to be run class AB (with no grid current flowing). If there is an amp that uses them, I would expect "Legal Limit" out of one tube if, the amplifier is set up properly. This...
  2. P

    Amp Supply LA 450 problem

    I looked at the factory roadmaps for those amps and, they did not show the 10 ohm resistors that you mentioned in the RF Deck circuit. If, I understand the problem correctly, the amp worked on the rest of the bands until you tried to use the "Aux-10 meter" position and then there was a...
  3. P

    Varmint XL 350

    I've seen a lot of Varmit (Brewer Labs) Amps but, *I* have *never* seen one with with 6LQ6/6JE6 tubes in it. Varmit amps were made with the tube sockets mouunted on a PCB, is there a place on that PCB for another tube socket to be soldered in? The extra tube and the larger transformer in the...
  4. P

    anybody ever heard of "blue streak 200"?

    Until pictures tell me differently. .
  5. P

    anybody ever heard of "blue streak 200"?

    Yup, he builds them high on top of Mt. Palomar. Hows about some pictures of this "Blue Streak 200". .
  6. P

    Fuse protection for tubes?

    Update? .
  7. P

    Anybody running 4CX250B's on 6m?

    Six meters is not quite VHF so, conventional HF circuits will work. Build yourself a "10 meter" amplifier and then stretch the tank coil open and tune for your 6 meters. You could build it "Cathode Drive" just like a 6LF6 amplifier with 300 volts on the screen and, an adjustable negative...
  8. P

    Varmit 600

    Is the a mobile (12 volt) amplifier? .
  9. P

    ANY ONE HEARD OF SKIP SHOOTER

    I guess that you have never seen it run or, heard the amplifier on the air? How many and, what type of tubes does it have in it, got a picture of the amplifier? Generic answer: This is a 1970-ish tube amplifier that probably uses 2 6JE6/6LQ6 tubes, you might see 100 to 150 watts on SSB if...
  10. P

    anybody ever heard of "blue streak 200"?

    Hmmmmmm.....Blue streak 200, blue streak 200, blue streak 200........Isn't that the lable that Copper Electronics slaps on their generic 2 transistor amplifier? .
  11. P

    Golden Falcon Amp

    The Anderson Golden Falcon used a voltage doubler circuit to develope the B+ volts for the tubes and, the GE 8950 tubes need about 900 volts on the plates to put out real watts. A replacement transformer would have had to be custom wound and would have cost $325.00 plus tax and shipping from...
  12. P

    321 BASE AMPLIFIER 6LF6 TUBES

    This is a 1970's vintage amplifier, it does not have a tuned input; the possibility of generating harmonics exist. Garbage in equals Garbage out, Between 200 and 400 watts No, the Lo-Hi switch is not bypassing any stages or, changing the amount of plate volts on the tube, that switch is...
  13. P

    Overcouple

    Tune the amp to max and then open the Loading capacitor at little to allow the amplifier to swing; this is overcoupling. (?) .
  14. P

    Pre Amp Not Working on Palomar 300 Amp

    I could not tell from the diagram if you have the Skipper 300 or, the Palomar 300a. There are 2 PNP transistors in the Palomar amp, one is the keying circuit and, the other is the receive preamp. Locate the transistor with the 220 ohm resistor, the 1000 ohm resistor and, the 68K resistor...
  15. P

    Hr2510 W/texas Star Dx350 SWR decreases during modulation

    Where is your SWR meter installed, between the Radio and the amp or, between the amp and the antenna? .
  16. P

    Fuse protection for tubes?

    I have separate Filament and bias supplies for each tube, each circuit has an in-line fuse in the cathode circuit, I used 1.0 amp fuses to test but now have 2.0 Fas-Blow fuses in there now. Each fuse block is parallel with a 30 Kilo-ohm resistor. Tell me about your tuned input circuit. .
  17. P

    Need info on Footwarmer Amplifier

    Which Plates(?) and, which Coil; pictures would help a great deal. .
  18. P

    PALOMAR TX-5200 AMATEUR MOBILE AMPLIFIER WITH BAND SELECTOR / FILTERING

    TX5200 vs. TX5300 I have the Palomar TX5300. If I recall, the Palomar 5200 is "Class C" (check out the schematic on CB Tricks); just a couple of diodes to ground in the input toroid circuit. BTW, the schematic at CB Tricks is in error, if you look at the input Toroid Transformer, the...
  19. P

    Looking for Help (Bias Adjustment)

    Bottom of Tube Sockets Hows' about some pictures of the inside of the RF Deck showing the wiring of the tube sockets and associated circuitry? .
  20. P

    Rooster-Made 3-500z Project

    He runs hot and cold..... I've almost begged him to let me test / finish the RF Deck. Still waiting... .