05-10-2021, 09:18 PM
Hi Forrest,
Thanks for the tip. In the radio I'm working on, the on/off push switch is at the far right end (looking at the back, like your pictures), but in principle I should be able to do the same thing.
So far in testing the components of the BoL, the motor works but needs new rubber wheels. Had to make up a couple of new rubber motor mounts, the other were actually gooey mush.
The lamp lights with 3 volts (2 @ 1.5 volt batteries), but I can't seem to get any voltage from the OSC coil to drive it as designed. Maybe the adjustment POT will help. Haven't tried that yet. How did connect to filament voltage for the lamp? Did you reduce the voltage at all?
The Photo cell connected to my Volt-Ohm meter flickers from zero to a couple of volts when I wave a flashlight in front of it. That seems promising.
The bottom square gasket holding the needle feels OK - it gives like rubber. The top one is like a rock. Just received an assorted box of watch crown/stem o-rings. Will see if I can use a couple to ft for that.
While I am waiting for a new tube to arrive, I'm taking the precaution and replacing the wires down to the speaker, and down to the turntable.
Any advice/comments/insight is always welcome.
Thanks,
Gary
Thanks for the tip. In the radio I'm working on, the on/off push switch is at the far right end (looking at the back, like your pictures), but in principle I should be able to do the same thing.
So far in testing the components of the BoL, the motor works but needs new rubber wheels. Had to make up a couple of new rubber motor mounts, the other were actually gooey mush.
The lamp lights with 3 volts (2 @ 1.5 volt batteries), but I can't seem to get any voltage from the OSC coil to drive it as designed. Maybe the adjustment POT will help. Haven't tried that yet. How did connect to filament voltage for the lamp? Did you reduce the voltage at all?
The Photo cell connected to my Volt-Ohm meter flickers from zero to a couple of volts when I wave a flashlight in front of it. That seems promising.
The bottom square gasket holding the needle feels OK - it gives like rubber. The top one is like a rock. Just received an assorted box of watch crown/stem o-rings. Will see if I can use a couple to ft for that.
While I am waiting for a new tube to arrive, I'm taking the precaution and replacing the wires down to the speaker, and down to the turntable.
Any advice/comments/insight is always welcome.
Thanks,
Gary