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Radio Record, Volume I, Issue 26, 13 January 1928, Page 2

If an ontside aerial is used with a superheterodyne receiver it should he designed to work with the receiver. Usually, fifty feet is long enough. ‘The longer the aerial the more it broadens the tuning and decreases sclectivity. Tor the super, the acrial does not need to be as high as for less powerful sets. It is generally conceded that trans-former-coupled amplification provides the’ simplest and most stable means of obtaining ample loud speaker volume. While the better imakes of present-day trausformers provide good tone quality in combination with a suitable loud speaker, to those with a critica] musical ear, however, somewhat better tone quality, with less volume, may be obtained with impedance and rcsistancecoupled methods. However, the last two methods, because of their inherent characteristics, have often been abandoned in favour of the more _ stable transformer-coupling system, with its greater volume for given "B" or plate voltages, though at a slight sacrifice in realistic rendition.