08-14-2010, 06:09 PM
Thank you, guys. Something to think about. Don't have a tube manual handy right now; I assume the 6K6 replaced the type 41? I had just wondered why so many different tube basings in the same radio. The type 5Y4G is apparently a little older than I had first imagined; after all, some 1938 Zeniths used it before switching to the dreaded 6X5.