> The cost of the 26z5w tube seems to keep going up and up. There > is a > 12 volt 9 pin tube with similar internal construction, but has > different pin-outs. It's time for me to make a mod. I forget the tube > number? anyone know? Thanks ...Steve...N8YE 12BW4. Go here: http://www.mines.uidaho.edu/~glowbugs/r390_psmod.htm Ken W7EKB