[R-390] More senseless tube subs

[Tim Shoppa]

More randomly senseless pentode subs:

6AK5W's work in many places where 6BA6's are supposed to be. AGC action
a bit messed up in some spots. S-meter mostly reads higher.

A 6BA6 in the crystal oscillator chassis mostly works. Output seems low,
oscillator sort-of works on most but not all bands.

A 6BA6 in the 17Mc oscillator's 6AK5W socket didn't work at all.

6AK6's work in many places where 6BA6's are supposed to be. AGC action
a bit messed up.

6AK6's work in the crystal oscillator 6AK5W but not the 17MC osc
6AK5W socket.

6BA6's in the 6AK6 sockets sort-of work, in the IF output the result
is soft and mushy, and the audio amp it sounds pretty crappy (probably
not in class A anymore!)

Tomorrow's senseless sub: 6C4 in a 3-500Z socket. Where DO I keep that
adapter?

Tim.