As several readers have noted in their emails to Radio World, Microwave Power Products' pending shutdown of the former Econco facility is a big deal.
Not too long ago, I saw an RF power amplifier that used a whole array of type 6146B vacuum tubes. The chassis held a whole lot of those tubes all running in parallel. We may be living in the age of ...
Series 38 consists of literature, data, and photos pertaining to different types and models of vacuum-tube type radio transmitters. It includes lists of vacuum-tube transmitters made by different ...
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