Happy New Year!
I replied to a comment by George Glavas on FB group Vintage Transistor Radios
George Glavas
I’ve never read any documents to back up your claim that “…germanium transistors lose gain as they age.” I think that people believe this because old equipment has lost gain. But all of the problems I’ve found with older radios have been caused by dying electrolytic capacitors and carbon composition resistors that have changed value. Replacing these bad parts takes care of the problem.
I’ll have to search for more information about this.