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SolderSmoke Daily News — Ham Radio Blog

Serving the worldwide community of radio-electronic homebrewers. Providing blog support to the SolderSmoke podcast: http://soldersmoke.com

Month: August 2025

Britain’s EF-50 Valve (Tube, Thermatron) in WWII

Thanks to Rogier PA1ZZ for sending us this.

Author William MearaPosted on 12 August 2025Categories Uncategorised1 Comment on Britain’s EF-50 Valve (Tube, Thermatron) in WWII

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