Features of the December "Radio Times."

Radio Record, Volume VIII, Issue 25, 28 December 1934, Page 40

Features of the December "Radio Times."

Battery Set With A.V.C.

HE "Golden Superhet Vive," a. powerful battery set incorporating diode detection with delayed automatic volume control, is-the "star" receiver in the December "Radio Times," now ob sale. New type Philips valves are used throughout. Two multi-mu Golden Series pentodes, type KF 2, are used as r.f. and if. amplifiers; a 1C6 as mixer oscillator, a KBCl1 as combined duodiode detector, A.V.C. control, and triode amplifier; and a C248N highefficiency pentode as output, valve, An interesting feature of the KF2 and the KBCl1, is that these valves have a sprayed metal coating on the glass euvelope, which obviates the need -for shield cans. This receiver gives splendid results, particularly on distant stations, and as the valves it uses have just been landed in New Zealand, it is the most up-to-date. set yet described in the."'Times." Another receiver which is certain to be popular with constructors is the "Picnic Portable," a simple portable receiver which is capable of providing good speaker reception up to a distance of forty miles from powerful local stations. In addition to the descriptions of these two recivers, there is also a fine Selection of technical articles. The principles on which meters operate, and their use in radio work, are simply explained in "Meters. and How to. Use Them," the first of a series of four practical articles. Other articles which the experimenter will find very interesting are those entitled, "Modern Automatic Volume Controls," "How to Minimise QRN and QRM," and "The New Golden Series Valves." The Log Section. "DXING DURING DECEMBER," by Mr. D. N. Adams (2HQ), one of New -Zealand’s leading dxers, is an article which no dxers, whether beginner or old hand, should miss. It includes a comprehensive list of American stations which can be heard during the present month. The remainder of the log section is packed with a variety of articles and station lists, which every dxer ‘will fina of great interest.