Hallicrafters S-20R

[bob91343]

Yes the 6SJK7 does amplify. The windings I redid don't have resonating capacitors; those are on the secondary.

I don't have a dip meter but will see about measuring resonant frequency.

This unit was almost a basket case. It had rust all over, a warped-beyond-usability bandspread window, no dial strings, burned coils and torn speaker cone and missing knob.

I've got most of the problems resolved but this one is baffling me.

Ask your friend what he has and how much he wants. This radio isn't mine so I have to get the owner to pay for any parts; so far the cost has been zero.

[7"estatdef]

I think perhaps if there was enough current passed though the RF coil to open the winding then it may have damaged the band switch contacts. Maybe you can hard wire it so the contacts are not in play. I checked w/my buddy he has the S-19. Unfortunately that set doesn't use a RF stage.
Terry