Views of the model 21 as found. It was missing two knobs, two
71A tubes, one 80 rectifier tube and cabinet trim pieces. Photos
of the finished restoration will be posted here upon completion.
The chassis is marked model 20A (25Hz version) as the early
model 21's used the same chassis as the model 20.
The chassis was very rusty on top but the underside was
surprisingly clean. I completed the electrical restoration some
time back, the biggest issue being an open-circuit RF coil. I
replaced that from another junker model 20 chassis. Note the
RF tube screen is present and just visible in the photo third from
top on the right. The speaker cleaned up nicely. The gash in the
cone was repaired using rubber cement.
71A tubes, one 80 rectifier tube and cabinet trim pieces. Photos
of the finished restoration will be posted here upon completion.
The chassis is marked model 20A (25Hz version) as the early
model 21's used the same chassis as the model 20.
The chassis was very rusty on top but the underside was
surprisingly clean. I completed the electrical restoration some
time back, the biggest issue being an open-circuit RF coil. I
replaced that from another junker model 20 chassis. Note the
RF tube screen is present and just visible in the photo third from
top on the right. The speaker cleaned up nicely. The gash in the
cone was repaired using rubber cement.
Philco Model 21 Cathedral Radio (1931) (as found)
This chassis has an oversized power transformer and filter
condenser block in support of 25Hz operation. It works just fine
on 60Hz.
condenser block in support of 25Hz operation. It works just fine
on 60Hz.
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