History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Notes

3 Australasian Radio World - Transcriptions and notes Key article copies Non-chronological material Owner Publisher Managing Editor Printer 1930s 1936 1936 05 1936 06 1936 07 1936 08 P.02 - Editorial Notes Editorial Notes . . . FOUR YEARS OF PROGRESS. During the past four years, radio has progressed perhaps more rapidly than ever before, particularly in regard to receiver design. 1932 saw the coming of the six- and seven-pin valves, and with their advent set designers discarded the old reliables, represented by the '24, '35, and 47, in favour of the 57, 58, and 2A5. Now these in their turn are giving way to the new American metal and English spray-shielded releases. Base standardisation for all new type valves is also an advance worthy of mention. CIRCUIT IMPROVEMENTS. Circuit design has improved in step with, or rather, because of, advances in valve design. Diode detection, automatic volume control, noise suppression control, and then dual-wave and all-wave receivers were all made commercially practicable by valves designed specially for these features. BETTER TONE THE NEXT STEP. The next step will undoubtedly be in the direction of improving tone; in fact, leading manufacturers are already releasing medium-priced receivers capable of giving high-quality reproduction. During the past few years, set designers have been forced to concentrate on obtaining high selectivity and maximum sensitivity - the former, because of the steady increase in the number of stations operating on the broadcast hand, and the latter, because of the rapid development of worldwide shortwave services. As a result, the modern superhet is more powerful and selective than ever before. What is now needed is these qualities combined with high-quality reproduction - a combination not easily obtained, for it means much more than just providing a modern superhet tuner with a high-class audio channel. Either variable selectivity or some form of tone compensation is needed - preferably the latter - while improved speakers and better baffling are going to help considerably. Price levels will probably be a little higher, because really good tone is expensive to obtain, but nevertheless the manufacturer who caters for this latest trend is going to reap a worthwhile reward. P.02 - Publication Notes The "Australasian Radio World" is published monthly by A. E. Read. Editorial offices, 214 George Street, Sydney, N.S.W. Telephone BW6577. Cable address: "Repress," Sydney. Advertisers please note that copy should reach office of publication by 15th of month preceding that specified for insertion. Subscription rates: 1/- per copy, 10/6 per year ( 12 issues) post free to Australia and New Zealand. Subscribers in New Zealand can remit by Postal Note or Money Order. 1936 09 1936 10 1936 11 1936 12 1937 1937 01 1937 02 1937 03 1937 04 1937 05 1937 06 1937 07 1937 08 1937 09 1937 10 1937 11 1937 12 1938 1938 01 1938 02 1938 03 1938 04 1938 05 1938 06 1938 07 1938 08 1938 09 1938 10 1938 11 1938 12 1939 1939 01 1939 02 1939 03 1939 04 1939 05 1939 06 1939 07 1939 08 1939 09 1939 10 1939 11 1939 12 1940s 1940 1940 01 1940 02 1940 03 1940 04 1940 05 1940 06 1940 07 1940 08 1940 09 1940 10 1940 11 1940 12 1941 1941 01 1941 02 1941 03 1941 04 1941 05 1941 06 1941 07 1941 08 1941 09 1941 10 1941 11 1941 12 1942 1942 01 1942 02 1942 03 1942 04 1942 05 1942 06 1942 07 1942 08 1942 09 1942 10 1942 11 1942 12 1943 1943 01 1943 02 1943 03 1943 04 1943 05 1943 06 1943 07 1943 08 1943 09 1943 10 1943 11 1943 12 1944 1944 01 1944 02 1944 03 1944 04 1944 05 1944 06 1944 07 1944 08 1944 09 1944 10 1944 11 1944 12 1945 1945 01 1945 02 1945 03 1945 04 1945 05 1945 06 1945 07 1945 08 1945 09 1945 10 1945 11 1945 12 1946 1946 01 1946 02 1946 03 1946 04 1946 05 1946 06 1946 07 1946 08 1946 09 1946 10 1946 11 1946 12 1947 1947 01 1947 02 1947 03 1947 04 1947 05 1947 06 1947 07 1947 08 1947 09 1947 10 1947 11 1947 12 1948 1948 01 1948 02 1948 03 1948 04 1948 05 1948 06 1948 07 1948 08 1948 09 1948 10 1948 11 1948 12 1949 1949 01 1949 02 1949 03 1949 04 1949 05 1949 06 1949 07 1949 08 1949 09 1949 10 1949 11 1949 12 1950s 1950 1950 01 1950 02 1950 03 1950 04 1950 05 1950 06 1950 07 1950 08 1950 09 1950 10 1950 11 1950 12 1951 1951 01 1951 02 1951 03 1951 04 1951 05 1951 06 1951 07 1951 08 1951 09 1951 10