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- -5.00 USD
Quality miniature glass 7-pin entode tubes manufactured by Philips in Holland. These variable-mu pentodes are designesd for use as RF amplifiers. With top getters and silvered metal plates, these tubes are printed in white PHILIPS MINIWATT DF91. Late 1950's production, they are boxed in standard Philips yellow and blue boxes printed PHILIPS MINIWATT.
Data sheet
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