A New Valve A Better Valve and it' $ a RADIOTRON The new UX221 is a valve the necd for which has Iong bcen Felt. It means a big saving on your #A" battery, consuming only .06 amperes. It will fit in the place of the 20 IA valve without any altera- tions__but that is not all Fit one and notice the improvement in volume and tone:; THOS. BALLINGER & CO;, Ltd: 58-62 VICTORIA STREET 8; WELLINGTON 66 12 Where the Quality Goods @re Sold:
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https://paperspast.natlib.govt.nz/periodicals/RADREC19300502.2.80.1
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Radio Record, Volume III, Issue 42, 2 May 1930, Unnumbered Page
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83Unnumbered Page Advertisement 1 Radio Record, Volume III, Issue 42, 2 May 1930, Unnumbered Page
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