12-07-2017, 11:05 AM
If it is possible to run the 6C4 on AC filament voltage it would require all 5 tubes to be replaced. This would probably still result in some hum since the cathode is jumpered to the filament.
I agree on the looks. I would not display a radio with these in it. My intentions were to use them for testing. The fellow that made similar substitutes a few years ago had some test tube glass to cover them with - even silvering some of them to replicate the getter. Maybe somebody could find some at a lab glass vendor. I haven't looked.
The problem with the WD-11 is the base, not just the pins. The pin spacing on a WD-11 is different than the 199, 80, 45 and so on. So you would have to make the whole base for an adaptor.
I agree on the looks. I would not display a radio with these in it. My intentions were to use them for testing. The fellow that made similar substitutes a few years ago had some test tube glass to cover them with - even silvering some of them to replicate the getter. Maybe somebody could find some at a lab glass vendor. I haven't looked.
The problem with the WD-11 is the base, not just the pins. The pin spacing on a WD-11 is different than the 199, 80, 45 and so on. So you would have to make the whole base for an adaptor.
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