#1284
cvrs
Forum Participant

It’s definitely quite old. I am not sure about the exact date but the oldest Roger’s set I have is 1929 and this is definitely earlier than that. The tubes with double pins like that were quite early production.

about the roger’s history page, I have seen that they have some samples of early tubes, but they mixed up the tube numbers. I informed the historian but got no reply.

My ’29 rogers uses some R30 tube which had a funny shaped envelope, but no pins on top like yours.
the R30’s in my set can be replaced by the common 27 tube They also used two roger’s 27’s in the same tube lineup in my set.

Those tubes do show up on occasion I don’t think the tubes would prevent you from getting it working, and it is probably a fairly simple TRF radio. you might check the transformers out. Mine had a interstage transformer that had a lot of thin wire and was open somewhere. I ended up using one from AES which was a lot smaller, but worked.

Another thing you could check is the tuning capacitor. sometimes the core of the thing is made of a type of cast metal that expands and distorts over time and it might be good to assess if that’s the case. avoid bending the tuning plates, some may appear to be bent, there are likely tabs you can bend to adjust how all the stages track, and some of these plate segments may have been bent in the factory to allign it. don’t try to adjust this unless you find you need to. of course it will kill the signal if the tuning plates touch the stationary plates.

The SPARC museum has at least one radio with tubes similar to that so you could perhaps contact them to see if they have any more info on it. This is a piece of Canadian history. as you probably know Rogers invented the first AC tubes which allowed radios to be run using AC power for the filament supply. I suspect the radio you have is made quite shortly after this breakthrough in technology. Thanks for shaping the photos !

Phil