[mikethedruid]

Try injecting a modulated 16-- KC signal through a .01 MFD condenser into the grid cap of the 78 RF amplifier tube, which will bypass the RF coil for and let you see if the problem is before there. If not, then try injecting it the same way into the grid cap of the 6A7 and see if you get a signal when you tune across the dial. If you do, it tells you that the oscillator is actually working. If not, when you know that is where things are screwed up. If the radio is working OK in the lower frequency band, but not on the upper, I would try cleaning the band switch contacts well. Also, note, the radio uses one coil for the oscillator, using a tap to change the band. If it is working OK on the lower frequency band, it means the coil is most likely OK, since that band uses the WHOLE coil, whereas the higher frequency band uses only a part of it. Remember, in an LC parallel tuning circuit, as you decrease L you increase the resonant frequency of the circuit.
[Image: https://ecstudiosystems.com/discover/tex...onance.png]