RADIO REVIEW

New Zealand Listener, Volume 3, Issue 66, 27 September 1940, Unnumbered Page

RADIO REVIEW

Contributed by

N.Z. DX R.A. Inc.

Address all Communications: P.O. Box 437, DUNEDIN.

Shortwave Notes WLWO Cincinnati has been granted the use of an additional frequency of 17.80 mc/s. Its 49 metres transmissions will in future be conducted on 6.08 mce/s. WDJM Miami, Florida, on 6.04 mc/s, has closed down, and its equipment has been purchased by stations WRUL and WRUW at Boston. The Calcutta station, VUC2, on 9.53 mc/s has been heard a number of times during the last few weeks until after 9 p.m. From 11 p.m. it is operating on 4.84 mc/s. New Midget Receiver A new midget receiver has been introduced to overseas markets which can be held in one hand or carried by a strap slung over the shoulder. The set weighs just over 4Ib., and measures 8 7/8in. by. 3 11/16in. by 3in-about the size of a small chocolate box. The details are: 4 of the new mini-tubes which are about 1/5th the size of standard valves.; two of the valves are twin-valves, giving 6-valve performance. A built-in loop aerial in the lid of the set. The tiny amplifying coils have iron’ cores and are iron shielded. A 3in. permanent magnet dynamic speaker. The "A" battery is a single flashlight cell; the "B" is a new 6714-volt type for which long service is claimed. A superhet circuit is used. Radio-Minded Guatemalans The most powerful amateur station in the North American Continent is perhaps TG5JG, with a 1200 watt output. The operators are Juan Guillen and Julius Caballeros, the Director-General of Communications in Guatemala. TGSJG uses a frequency of 14.020kc/s, and American listeners state that the station is heard frequently testing with recordings at approximately 9 p.m. (N.Z. Standard Time). Another Record The following information indicates that there is something new under the sun. American amateurs are at present conducting extensive experiments on frequencies in the region of 112mc/s (24% metres). These were formerly thought to be useless for other than immediately local transmission, but on July 4 W6BJI, operating from a ’plane near Tulare, succeeded in contacting W6KIN on Mt. St. Helena, California. The airline distance between the two stations .was 255 miles. Again amateurs have pioneered the air-waves.