[markmokris]

I recently did the mod changing the 36 tube to the 77 tube with great success. Originally I had this 19 oscillating pretty well across the band with the original 36 tube. But over time it started dropping out below 1100 kHz or so.

So I made the 77 tube modification, and it works real well now.

That Philco chassis is like an armored tank. I had a heck if a time drilling holes and centering the replacement socket.

I'll be interested in how your adventure with the 6A7 mod works out Steve.

Mark K8KZ