From all Angles

Radio Record, Volume III, Issue 41, 24 April 1930, Page 11

From all Angles

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ECENTLY a "wet A" battery which was causing.the valves to flicker was shown the writer. It transpired that there was a good deal of sediment in the bottom of the battery, and when this had been washed out at a service station the battery functioned satisfactorily. Evidently the sediment was causing a "short circuit" at the base of the plates. A WELLINGTON enthusiast lately showed the writer a "new" circuit which he had embodied in his homebuilt set. He had followed the diagram published in an Australian journal. His enthusiasm was somewhat dampened when it was shown that the circuit transgressed the New Zealand regulations as it was prone to cause howling and was difficult to control. There are circuits permitted in Australia which are banned in New Zealand, and rightly so. The said enthusiast, sooner than risk a prosecution, set about altering the circuit. QNB continually meets people who have not heard of the a.c. set. The writer has recently had guests who have not taken up radio as they did not want to. be "bothered with batteries." Radio exhibitions do much towards educating this section of the public, and by demonstrations show how simple the modern a.c, set is to operate. HE most powerful broadcast _ station in Burope, at present, is that at Santa Palombia, about 18 miles south of Rome. It is rated at 50,000 watts output power, with 100 per cent. modulation. There is provision. for an output of 200,000 watts. The wave length is 441.8 metres.