July "Radio Times"

Radio Record, Volume V, Issue 51, 1 July 1932, Page 29

July "Radio Times"

Available this Week

HE July "Radio Times," which will be available this week, contains a wealth of varied information. There are two general articles which should have a wide appeal, one dealing with the question which is occupying the attention of most people "in the know" at the present time-that is, dumpingand the other dealing with the percentage of licenses in England, America, and New Zealand. The first article explains how, in the last two years, the American factories over-produced, .and points out the danger of that overproduction to New Zealand. It states some facts that will -surprise most people, and in the article are two most interesting charts which set out diagramatically the position that has arisen over the last twelve months. The second article shows that New Zealand has a long way to go yet before saturation point is reached. The article to a degree is retrospective, and points out how rapid growth has taken place in the number of licenses both at home and abroad. It analyses the possible reasons why Wngland and America have so far advanced in the radio world, and suggests certain lines of development for New Zealand radio. The "B" station dealt with this month ig 8ZC, and together with an account dealing with both technical and entertainment sides of the station’s activities, is a splendid photograph of the interior of one of the studios. On the constructional side there is a complete account of how to build the "Weonomy Three," a three-valve a.c. receiver comprising tuned r.f., detector, and pentode. The circuit employs ganged condensers. Other technical articles include Part III of the A.B.C. of the a.c. set. in which a modern superheterodyne — set is dealt with and the modern; method of obtaining voltage is fully Those who are studying radio. either from an amateur or dealer’s point of view, would be well advised to follow these articles carefully, as they bring to light facts that may take a long time to dig out.-

Of interest to the technical man, too, : will be the full account of several new valves which have been developed in America. The description of these valves contains a2 summary of their principal characteristics and depicts the valves, which, by the way, are rather different from the usual, pictorially and in circuits. It explains also a new system of amplification. There are two articles on electrolytic condensers-one explaining how they ure made and what they comprise, and the other explaining how they may be used in transmitters and receivers so that their filtering properties may be utilised to the maximum. Those who are seriously interested in radio will find the series on electrical units helpful. This month is published Part 2 of Ohms Law, in which power derivation is dealt with and a circuit is shown indicating how Ohms Law may be applied to it so that the values and power ratings of the resistances may be worked out. The "Beginner Corner" which appeared in the first issue of the "Times,"

but which has not since been seen, reappears in this issue, with some valuable. hints for those’ who. are not familiar with radio technicalities, In the dealer’s section are two official articles from the federation, one dealing with points arising out of the newly-framed radio regulations, the other being the answers to section 1 of the radio serviceman’s examination. Another article in this section deals with the newly-formed New Zealand

eee tin Radio Institute. The serviceman’s corner has hee: extended, and this time is illustrated with sketches which should prove of great interest 'to radio servicemen. The "Radio Times" offers a prize of 10/6 monthly for the best case sent in by servicemen. and this month’s winning one sets a high standard. HE DX section should fully satisfy members of the club. In addition to the very comprehensive district notes. there is the monthly mail, and two important announcements, one concerning the dx badges, and the other respecting the club president. All dxers will be indeed interested in these announcements, and they are advised to ,see the "Times," because the points mentioned there vitally affect their interests. Generally speaking, it may be said that this month’s "Radio Times" ‘is fully up to the very high standard which has been set by the past issues. and judging by the response received by the others.‘ this one will find a very quick sale. The price is 9d, from all booksellers and dealers or direct from the office, Box 1032, Wellington,