|
Do you have a schematic showing the same tuner with a UHF strip? I believe the design of the strip was quite different, using the extra contact (1) to switch the UHF mixer diode into the circuit for UHF mixing. IIRC, there were also more coils that were used to double or triple the local oscillator frequency, since the 6J6 likely was a poor oscillator in the UHF range.
jr
|