12-18-2018, 12:33 PM
I've finished the electrical rebuild and alignment of my model 52 and the receiver is working well, possibly too well. With my 20' wire in the ceiling of my basement, I can listen to clear channel stations in Philadelphia and Quebec from Iowa!
Local stations are another thing. I use KMRY (local oldies station) a lot and it is so strong that it is hard to listen to. You almost can't turn the volume control down far enough. "Volume" on this receiver is really an RF control at the antenna.
I've noticed that the audio is slightly distorted - not horrible at all but it is worse on strong stations. Is this just typical for a 1934 design? The output tube (47) tests ok but has a fair amount of blue glow. It also runs REALLY hot, by far hotter than the rectifier or any of the other tubes.
I haven't checked the bias voltages on the output tube, I can do that next.
Thanks for any help,
dave
Local stations are another thing. I use KMRY (local oldies station) a lot and it is so strong that it is hard to listen to. You almost can't turn the volume control down far enough. "Volume" on this receiver is really an RF control at the antenna.
I've noticed that the audio is slightly distorted - not horrible at all but it is worse on strong stations. Is this just typical for a 1934 design? The output tube (47) tests ok but has a fair amount of blue glow. It also runs REALLY hot, by far hotter than the rectifier or any of the other tubes.
I haven't checked the bias voltages on the output tube, I can do that next.
Thanks for any help,
dave
