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| KT2, KT63, KT61, KT66, PX4, KT76, KT33C, KT71, U50, U52, U76 & U31 Advert. •Wireless World •June, 1948. |
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| 10C1, 10F9, 10LD11, 10P13, 10P14, U404, TH41, VP41, HL41/DD, Pen45, UU6, TH233, SP181, VP133/DD, Pen384 & U201 Advert. •Wireless World •December, 1948. |
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