Thermionic emission 1970-01-01
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Top cap 1970-01-01
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Traveling-wave tube 1970-01-01
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Triode 1970-01-01
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Triple-twin 1970-01-01
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Tube caddy 1970-01-01
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Tube socket 1970-01-01
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Tube sound 1970-01-01
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Tube tester 1970-01-01
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Twystron 1970-01-01
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Ultra-linear 1970-01-01
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Vacuum tube battery 1970-01-01
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Valve audio amplifier 1970-01-01
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Video camera tube 1970-01-01
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Vintage amateur radio 1970-01-01
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Vircator 1970-01-01
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Voltage reference 1970-01-01
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WD-11 1970-01-01
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Wehnelt cylinder 1970-01-01
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Williamson amplifier 1970-01-01
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