Radio Serviceman's Examination
What do you know about resonance, inductance, oscillatory circuits ? Do you fully understsand the operation of a superheterodyne set? Could you service one that tuned exceptionally broadly ? There is just time to brush up your knowledge of radio .. . but NO TIME TO WASTE. Write to us re our Special BrushingUp Course prepared to conform to the syllabus set down by the Electrical Federation. JOHNSON’S WIRELESS AND RADIO SCHOOL, St. George Buildings, 8-10 Brandon Sty Wellington.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19311120.2.19
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Radio Record, Volume V, Issue 19, 20 November 1931, Page 5
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78Radio Serviceman's Examination Radio Record, Volume V, Issue 19, 20 November 1931, Page 5
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