01-05-2017, 08:07 AM
The Radiola 60 is a very interesting set, as it is a superhet using all type 27 triode tubes in the RF and IF stages. Really the first superheterodyne designed from the ground up as an AC powered radio.As Arran mentioned, it performs amazingly well for a 1920's radio.
I would not be surprised if you gradually powered up this radio and it worked as is. I have a 60 which sat in a damp barn for 80 years and worked after replacing one open resistor. Mine is presently running fine on all its original parts other than that one resistor. The original paper filter caps seem to be of a better quality than those of later sets.
It will probably need a good alignment as the triode IF amps need neutralization adjustments to eliminate squeals and howls due to oscillation.
I would not be surprised if you gradually powered up this radio and it worked as is. I have a 60 which sat in a damp barn for 80 years and worked after replacing one open resistor. Mine is presently running fine on all its original parts other than that one resistor. The original paper filter caps seem to be of a better quality than those of later sets.
It will probably need a good alignment as the triode IF amps need neutralization adjustments to eliminate squeals and howls due to oscillation.
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