HEN a tuning-coil is used inside a sereening-box it should be placed centrally, not only as regards its distance from the four sides, but also from the top and L ‘:om, or otherwise there will be unnecessary damping. IT running a long lengt’ of wire from the set to the loud-speaker, be careful to keep this a considerable dista1ce from the aerial lead-in, as if the two are too close together a persistent and annoying howl ma, develop.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19290125.2.67
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Radio Record, Volume II, Issue 28, 25 January 1929, Page 28
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78Untitled Radio Record, Volume II, Issue 28, 25 January 1929, Page 28
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