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Hawkeye351's latest activity
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nice, might you have picture of the 3cx400A and the circuitry around it? -
Yellow part is a plastic film capacitor, 0.22uf 600 Volt rating. 73
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Did replacing the tube bring down the input impedance? hopefully it is ok to put this link to tubes, if not please delete...
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Hawkeye351 replied to the thread Mark 8 (17DQ6B).Checked all the tubes: 5 tested around 75%, no drop down. 3 tested as 30%, with one dropping lower than 30% the longer the test button...
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You are looking at the last big amp Screwdriver (here in NC) ever built due to his health has left him unable to do it anymore. Turbo...
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Um, the cap on the top is the anode (plate). Pin 4 is G2, the screen grid. Runs with a positive DC voltage. Maybe 100 Volts maybe more...
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Hawkeye351 replied to the thread Mark 8 (17DQ6B).The 470 ohm resistors (some of which are circled in red across the tubes) come from pin 4 over to pin 8. From my understanding pin 4 is...
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Hawkeye351 replied to the thread Mark 8 (17DQ6B).Snag (Snaggletooth) passed away in 2021, he was one of the best in NC for years. Then Ray Phelps passed away a couple years ago. Now...
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Those look like the kind of resistor that gets toasted when a tube breaks down. Not so different from the 10-ohm base resistor on a...
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Hawkeye351 replied to the thread Mark 8 (17DQ6B).Mark 8 was made by Elkin (Ray Phelps). Yea, and running a constant 50 to 70 watts through it didn't help it none neither, lol....
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Hi all, been away for a while and in the process I lost my login info. Thanks to CableGuy and AuduoShockWave for getting me back up. I...
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