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nomadradio's latest activity

  • nomadradio
    nomadradio replied to the thread Problem with AL-80B.
    No, the solder adheres to a thin electroplated layer of nickel. The solid pin that comes through the glass is a tungsten alloy chosen to...
  • nomadradio
    nomadradio replied to the thread CPI 2000 issues.
    It should. For a while at least. It's kinda old, and may suffer from electrolytic cap disease if it has a lot of miles on it. Unless...
  • nomadradio
    nomadradio replied to the thread Another Saturn bias issue.
    Some final/driver transistors have that extra diode inside them. Some don't. After all these decades, I'm still waiting for a proper...
  • nomadradio
    nomadradio replied to the thread Problem with AL-80B.
    Have a close look at the filament pins. As in very-bright light and a magnifier. This is the pair of pins closest together. They carry...
  • nomadradio
    nomadradio replied to the thread M4000 Amplifier.
    It was when it was built. Might or might not be now. 73
  • nomadradio
    nomadradio replied to the thread Palomar 225 w/2 MRF 455's.
    That resistor is in series with the radio's drive power to the transistors. A pair of MRF455s only needs about ten or twelve watts peak...
  • nomadradio
    nomadradio replied to the thread Help with Golden Eagle 150 linear.
    It's an AM-only linear that has a switch marked "SSB" on the front. It's not there because it's useable, it's there because buyers...
  • nomadradio
    nomadradio replied to the thread AL-811H problem/ question.
    Sure makes it sound like there's a 'glitch' resistor that's popped in line with the HV to the anode choke. A DC meter that can safely...
  • nomadradio
    nomadradio replied to the thread CPI 2000 issues.
    A 'scope is just a voltmeter with a dot in place of a meter needle. Positive voltage and the dot moves up. Negative input to the...
  • nomadradio
    nomadradio replied to the thread Yaesu FT-101E repair.
    The smaller, burnt resistor is R5, a 5.1k 5 Watt resistor. It's in series with the 12BY7 driver tube's screen grid. When R5 goes open...
  • nomadradio
    nomadradio replied to the thread CPI 2000 issues.
    This has been our policy for replacing any DIP-package chips for decades. You can reduce the heat stress to the circuit board foils by...
  • nomadradio
    nomadradio reacted to Hawkeye351's post in the thread Another Saturn issue with Like Like.
    Yep, you were 100% correct Brandon. I yanked out FL2 and replaced with another one. BAM, AM receive immediately jumped up to exactly...
  • nomadradio
    nomadradio replied to the thread Browning mk3 transmitter issues.
    Found another on the GE Superbase thread: https://www.microchipz.net/vco-units 73
  • nomadradio
    nomadradio reacted to TM86's post in the thread TRC-448 repairs with Haha Haha.
    When it's that or throw it against the wall, I'll put it on the shelf every time. I did the drywall in here, I don't want to have to do...
  • nomadradio
    nomadradio replied to the thread Browning mk3 transmitter issues.
    There was an Ebay seller in England selling replacement VCO modules for Cybernet-made CBs. Can't remember the name. The tuning slug in...
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