Trade Notes
THE British General Hlectric advise that they are bringing out a new series of: valves. We have been fortunate in seeing advance information concerning these and have had an opportunity to study their characteristics. Many improvements have: been made. In most cases. the impedance has been lessened and the slope and amplification factor improved. When. details of these valves come to hand ‘listeners will be able to get informa- ‘ tion directly from the representatives.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19310109.2.14
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Radio Record, Volume IV, Issue 26, 9 January 1931, Page 5
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76Trade Notes Radio Record, Volume IV, Issue 26, 9 January 1931, Page 5
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