6L6GC tubes.

[Bob Meyer]

Thank you for all the info.
I did check all volts and plate current.
My heath kit w-5m seems to be fussy with 
KT66/6L6 GC types.
Only some brands have a very dim red glow on plate.
The china brand did a orange glow on plates.
The sovtek KT 66 I use now doent.
Durring MAX power output I get a blue glow that goes with 
the sound level.never see it at normal volume.
RCA must be cheaper plates like the cheper sovtek and china tubes.
The better line of sovtek 5881 work great.no red glow.

I found out the the cheaper 6L6GC doent work very well in w-5m but ok in A9-C amps.

73's
Bob

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