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Biggles · 11th Jul 2018, 8:35 pm

I suppose one reason for this modification would be to reduce LT battery current, but this would have to use the "96" series B7G valves with 25mA filaments as opposed to the "91/92/94" types with 50mA filaments, which would amount to the same filament current as the octal range. It's a puzzle.
Alan.

11th Jul 2018, 8:35 pm	#6
Biggles Rest in Peace Join Date: Feb 2004 Location: Hexham, Northumberland, UK. Posts: 2,234	Re: Amplion ADP2 I suppose one reason for this modification would be to reduce LT battery current, but this would have to use the "96" series B7G valves with 25mA filaments as opposed to the "91/92/94" types with 50mA filaments, which would amount to the same filament current as the octal range. It's a puzzle. Alan.