A pentode with a 6-pin plastic base, top contact, screen grid, domed envelope. Stamped on top: "Western Electric / Made in U.S.A. / 337A". Data sheet notes: "A variable-mu pentode of the unipotential ...
With both control and screen grids using frame-grid construction, a new pentode boasts performance features that far surpass those available in conventional pentodes. Compared with some of the better ...
Ron Quan, analog aficionado and inventor of the dreaded MacroVision VHS content scrambling system, saw my blog about a radio that uses Russian rod tubes. I saw Ron Saturday at the last eFlea of the ...
A pentode with a 6-pin plastic base (loose), top contact, domed glass envelope. Indirectly heated cathode. Heater voltage: 10, AC or DC; heater current: 0.32 amperes; plate voltage: 135 or 180. "A ...
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