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MACO / BRUTE Seventy-Five
- Thread starter Recon
- Start date
Nothing magic about carbon resistors. The more-modern carbon-film resistors made on a ceramic body will work just fine.
73
73
The reading on pins 3 and 11 should be an open circuit. The path from those pins to ground goes through a zener diode. The meter will read it as an open circuit.
Seems to me they ran a jumper wire under each socket between pins 3 and 11.
I would check for continuity from pin 3 on the tube that gets hot to pin 3 on the tube that doesn't.
Likeliest thing to make the tube overheat would be loss of the negative bias voltage on pins 3 and 11 of one tube, but not on the other.
73
Seems to me they ran a jumper wire under each socket between pins 3 and 11.
I would check for continuity from pin 3 on the tube that gets hot to pin 3 on the tube that doesn't.
Likeliest thing to make the tube overheat would be loss of the negative bias voltage on pins 3 and 11 of one tube, but not on the other.
73
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Incoming Region Produces X3 Solar Flare May 15, 2024 @ 14:55 UTC Another major solar flare, but this time from an active region just beginning to turn into view off the east limb. It is possible that the group responsible is old AR 3654 from the previous rotation. The latest flare, an X2.99 event just peaked at 14:38 UTC (May 15). Stay tuned -
