04-03-2015, 09:39 PM
Ok Looks like both coils are open. If you look at the diagram the ant coil is connect across the wiper of the volume control to chassis gnd. If the coil was good the very low resistance would trump the resistance of the volume until you turn the control almost all the way down ( turned down so it would be less that the resistance of the coil) If the coil open (like yours) what you are measuring is only the resistance of the control.
The osc coil again should measure a very low resistance like 2 or 3 ohms. From chassis to the junction of the coil at where the 6000 ohm resistor connects. You can double check the osc operation by listening for it with transistor radio tuned to 470KC above the dial reading of the Philco. Place the transistor near the 6J7 osc tube or osc coil
Both windings are about 25t of 38ga magnet wire. Wire ga is not very critical anything from 32-40ga is fine.
Terry
The osc coil again should measure a very low resistance like 2 or 3 ohms. From chassis to the junction of the coil at where the 6000 ohm resistor connects. You can double check the osc operation by listening for it with transistor radio tuned to 470KC above the dial reading of the Philco. Place the transistor near the 6J7 osc tube or osc coil
Both windings are about 25t of 38ga magnet wire. Wire ga is not very critical anything from 32-40ga is fine.
Terry
