Talk:Neumann U 47

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The VF14 was an RF pentode for various functions in military field radios?

Its 55V/50mA heater made VF14 unsuitable for mobile equipment; the Mullard–Philips "V" tubes were for low-budget, low-tube count ac/dc radios. 85.240.217.134 (talk) 02:24, 2 December 2017 (UTC)[reply]

with leather.

Excuse me. Prominently mentioned in Joe's Garage. Only reason I've heard of it. Lots of hits, but not sure I'm seeing any reliable sources. Just Step Sideways ^{from this world ..... today} 05:21, 30 November 2024 (UTC)[reply]