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french flagRadio Micro 'Spècial'

'Spècial' thoriated tungsten filament triode

Radio Micro 'Spècial'
Radio Micro 'Spècial'
Box

"Radio Micro" was a trade name of the Société La Radiotechnique, who in 1927, became Dario. This valve is a thoriated tungsten filament triode introduced in 1923.

© Andy Cowley, 2005-2012     Home

This page last modified by AJC on Friday, 26-Mar-2010