05-09-2020, 03:00 PM
The cathode resistors are well within tolerance.
The total plate current for the two 44 tubes is 9mA. If need be, I can get a reading on the plate current for the 36 tube.
One of the differences in the 225 chassis is that part 21 shows up on the schematics that are available (but do not include a 225 chassis) as 10k ohm. As this radio came from the factory, there was a 15k ohm installed. I don't know if this matters.
One of the things that has puzzled me is how the cathodes of both 44 tubes are shown as having different voltages when they are both wired together. I'm assuming this is an error.
The total plate current for the two 44 tubes is 9mA. If need be, I can get a reading on the plate current for the 36 tube.
One of the differences in the 225 chassis is that part 21 shows up on the schematics that are available (but do not include a 225 chassis) as 10k ohm. As this radio came from the factory, there was a 15k ohm installed. I don't know if this matters.
One of the things that has puzzled me is how the cathodes of both 44 tubes are shown as having different voltages when they are both wired together. I'm assuming this is an error.
Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it.
