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Chinese 1A2 Super Regenerative FM radio kit
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2nd Nov 2017, 5:03 pm
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Tyso_Bl
Hexode
Join Date: Jul 2014
Location: Magor, Monmouthshire, Wales, UK.
Posts: 436
Re: Chinese 1A2 Super Regenerative FM radio kit
It means you can't see the filament glow under normal light, unlike a normal indirectly heated valve.
T
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