Gift: ERLA Model S-11 #16149

[Electronic M]

Edit I see you are progressing on the pa transformer the way I would... I'm too tired to check the math, but it looks like your on the right track.

On the barn parts radios Google the audio output tube I'd number for each tube with the " tube datasheet" tacked onto the end of the search string...you should ring PDFs of pages from old RCA tube manuals and the like scan through the specs and look for plate resistance of the tube anything reasonably close to 11k should have a transformer that will work.....you can also order a new part from Hammond. Hammond makes new transformers for tube gear and probably has something that will work (try to get a part 5w or less or your paying for extra power your output tube will never be able to deliver to it).