For those interested, I have the following NOS tubes for swap:
8 ea. 6883B
3 ea. 8552 (same as 6883B)
3 ea. 6883.
The 6883 is exactly the same as the 6146 except
for heater being 12.6 volts.
I would like to trade them at the rate of 2 to one for
6HF5's. I need some of these for my Drake 2-NT
and Hallicrafters SR-400.
73,
Sandy Blaize, W5TVW