RADIO AND ITS RECEIVERS

Sun (Auckland), Volume III, Issue 699, 26 June 1929, Page 16

RADIO AND ITS RECEIVERS

Conducted for THE SUN by

R. F. HAYCOCK.

STATIONS ON THE AIR I I BROADCAST AND SHORT-WAVE HOW MANY CAN YOU GET? J J BROADCASTERS , Metres. Watts NEW ZEALAND I IYA.—Radio Broadcasting Co. of N.Z., 419 Queen St., Auckland, 1500-2203 (silent day Monday) .. 333 500 2YA.—Radio Broadcasting Co. of N.Z., Welling- I ton, 1500-2200 (silent I day, "Wednesday) .. .. 420 5,000 3YA.—Radio Broadcasting Co. of N.Z., Christ- T Church, 1500-2103 (silent T day, Tuesday) . . .. 306 500 4YA.—Radio Broadcasting Co. of N.Z., Dunedin. 1700-2200 (silent days, 1 Monday and Thursday-) 463 750 QUEENSLAND < 4QG. —Queensland Govern- c ment Radio Service, *1 Brisbane, 0800-220 . . 385 5,000 i 4GR. —Gold Radio Service, c Ruthven St., Toowoomba 294 100 SOUTH AUSTRALIA ] sCL.—Central Broadcasters, Ltd., 114 Hindmarsh Sq., Adelaide, 1100-2310 409 5,000 , SDN.—SDN Propty., Ltd., 2-4 Montpelier St., Parkside 313 500 - SKA. —National Musical Federation, Ltd., 81 Flinders St., Adelaide . 250 2,500 i WEST AUSTRALIA 6WF.—Commonwealth Gov- i ernm.ent Broadcasting Station, Perth, 12302230 1,250 5,000 " 100 NEW SOUTH WALES 2FC. —N.S.W. Broadcasting Co., Ltd., Market St., Sydney, 0700-2230 . . 442 5,000 , 2BL.—N.S.W. Broadcasting Co., Ltd., Market St., Sydney, 0800-2330 . . 353 5,000 2GB. —Theosophical Broad- _ " casting Station, 29 Bligh St., Sydney, 1000-2200 . 316 3,000 2KY.—Trades and Labour ' Council, Goulburn St., Sydney, 990-2200 . . .. 280 1,500 . 2UW. —Radio Broadcasting, Ltd., Paling’s Bldgs., Ash St., Sydney, 12302230 267 300 . 2UE. —Electrical Utilities, Ltd., 619 George St., Sydney, 0730-2330 .. 2.93 250 2MK.—Mockler Bros., Ltd., Hawick St., Bathurst . 275 250 2HD.—W. W. Johnston, International Bible Students’ Association, Cr. Darby and King Sts., Newcastle .. .. 2SB 100 2BE. —Burgin Electric Co., 340 Kent St., Sydney; at present off air .. 316 100 VICTORIA 3LO. —Dominions Broadcasting Co., 120 a Russell St., Melbourne, 07152340 371 5,000 OAR.—Dominions Broadcasting Co., 120 a Russell St., Melbourne, 10002200 454 5,000 3UZ.—O. J. Nilson and Co., 45 Bou rk e St.„ Melbourne 255 500 TASMANIA 7ZL.—Tasmanian Broadcasters Pty., 95 Elizabeth St., Hobart, 11302204 516 3,000 GREAT BRITAIN 2LO.—British Broadcasting Co., Savoy Hill, London 35S 2,000 5XX.—8.8.C., Daventry .. 1562.5 25,000 5G8.—8.8.C., Daventry .. 482.3 25,000 UNITED STATES KDKA.—W e s t i n g h ouse Electric and Manufacturing Co., E. Pittsburgh, Pa 305.9 50,000 KFI. —Earle C. Anthony, Inc., 1,000 So., Hope St., Los Angeles .. .. 468.5 5,000 KGO. —General Electric Co., Ltd., Oakland, Calif. . 379.5 10,000 KOA. —General Electric Co., Ltd., 1370 Krameria St., Denver, Colorado .. 361.2 12,500 KNX.—Western Broadcast Co., ’'Los Angeles, Cal. 285.5 5,000 WEAF. —National Broadcasting Co., 1950 Broadway, New York .. 454.3 50,000 WGY. —G ene ra 1 Electric Co., So., Schenectady, N.Y 379.5 50,000 WJZ.—National Broadcasting Co., 195 Broadway, New York 394.5 30,000 JAPAN JOAK. —Tokyo Central Broadcasting Co., Tokyo, Japan. Jap. stations receive best about midnight on Sunday . 345 and 375 10,000 JOBK. —Osaka Central Co., Osaka 385 10,000 JOCK.—N ago y a Central Broadcasting Co., Nagoya 370 1,000 JODK.—Keijo Broadcasting Co., Keijo, Japan .. . . 3C6 1,000 JOKF. —Hiroshima Central Broadcasting Co. .. j . 353 10,000 JOGK. —Kumamoto Central Broadcasting Co 380 10,000 JOHK. —Sendai Central Broadcasting Co 396 10,000 JOIK. —Saptoro Central Broadcasting Co 361 10,000 ON SHORT-WAVE AUSTRALIA Call. City. W.L. 2BL.—Sydney 32.5 2FC. —Sydney 28.50 2ME. —Sydney .. .. 28.50 3AR.—Melbourne 55.00 3LO. —Melbourne 32.00 6AG. —Perth, W.A 32.90 AFRICA AIN. —Casablanca, Morocco .. .. 51.00 JB.—Johannesburg, South Africa . 32.00 7LO. —Nairobi, Kenya 33.50 AUSTRIA OHK2. —Vienna 70.00 EATH.—Vienna 37.00 BELGIUM EB4A2. —Brussels 42.00 CANADA CF.—DrummondvtSie, Quebec .. .. 32.00 DIfJMARK D7MK.—Copenhagen 32.05 D7RL.—Copenhagen .. .. 42,12 and 84.24 ENGLAND sSW.—Chelmsford •• .. 24.30 i 2NM.—Caterham 32.50 j GBS.—Rugby 24.40 FRANCE ! FSGC. —Paris (“Radio LL") .. .. 61.00 ! FBAV.—Nogent 80.00 Eiffel Tower.—Paris (time signals) 32.00 ; YR.—Lyons (“Radio Lyon”) .. .. 40.20 Agen 30.75 YN.—Lyons 58.00 FW4. —Ste. Assise 24.50 GERMANY AFl.—Konigswusterhausen 14.00 AFL. —Hamburg 52.00 AFT. —Konigswusterhausen .. 14.00 AFU. —Konigswusterhausen .. .. 14.00 AFK.—Berlin (Doberitz) 67.65 HEA. —Nauen 11.00 AGC. —Berlin 17.20 AGJ. —Nauen .. 56.70 AGK. —Nauen .. .. 11.00 LA.—Langenberg 43.00 POF. —Nauen .. .. 11.00 POZ.—Nauen 18.10 Stuttgart 41.00 HOLLAND Metres. Watts i PCJ.—Eindhoven 31.4 I PCK.—Kootwijk 16.00 PCL.—Kpotwijk 18.10 | PCM.—TI.e Hague 46.50 PCP.—Kootwijk 16.50 PCR. —Kootwijk 37.00 jPCT.—Kootwijk 31.00 PCU.—The Hague 37.00

ITALY II AX.—Rome 20.00 40.00 lAY.—Piacenza 20.00 45.00 JAPAN JFAB.—Taipeh, Formosa 30.50 JHBB. —Ibarakiken (Hirasio) .. 37.50 JlFP.—Tokyo 20.00 JKZB.—Tokyo 20.00 JOAK. —Tokyo .. 30.00 60.00 35.00 70.00 IA A.—lwatsuki 40.00 JAVA PLE.—Bandoeng 19.03 MEXICO XCSI. —Mexico City .. 44.00 NORWAY LCHO.— Oslo 33.00 LGN.—Bergen 30.00 SOVIET RUSSIA RFM.—U.S.S.R., Moscow .. .. 29,60.50 REN. —U.S.S.R., Siberia 60,30 SPAIN EAM.—Madrid 30.70 SWEDEN SAS.—Karlsborg 52.50 SAA.—Karlskrona .. ~ 44.40 SAJ.—Karlsborg 47.00 SMHA. —Stockholm 41.00 SWITZERLAND H9oC.—Berne 32.00 lI9XD. —Zurich 85.00 and 32.00 UNITED STATES WAAM (W2XBA). —Newark, N.J. 65.18 WABC (W2XE).—Richmond Hill, N.Y 58.50 WAJ.—Rocky Point, N.Y 22.48 WBKL (WtXY).—Tilton, N.II. .. 109.00 WBZ.—Springfield, Mass 70.00 WCFL.—Chicago, 111 37.24 WCGU (W2XBH).—Brooklyn, N.Y. 54.00 WCSH (WlXAß).—Portland, Me. . 63.79 WCX. —Pontiac, Mich 32.00 WEAJ.—Rocky Point, N.Y 22.48 WEAO (WBXJ). —Columbus, O. .. 54.02 WGY (W2XAF). Schenectady, N.Y 31.40 WGY (W2XAD). Schenectady, N.Y 21.96 5.00 WHK (WBXF). —Cleveland, O. .. 66.04 W JR-WCX (WBXAO). Pontiac, Mich 32.00 WlZ.—New Brunswick, N.J. .. 43.45 WJZ (W3XL). —New York, N.Y. .. 59.96 WLW (WBXAL).—Cincinnati, O. .. 52.02 WNAL (W9XAB).—Omaha, Neb. . 105.00 WNBT. —Elgin, IJJ. (time signals) 35.50 WND.—Ocean Township, N.J. .. 46.48 WOR (W2XAQ). —Kearney, N.J. .. 65.40 WO WO.—Fort Wayne, Ind 22.80 WRNY (W2XAL).—New York, N.Y. 30.91 WSM (4XD).—Nashville, Tenn. .. 31.43 WTFF.—Mt. Vernon, Va 56.00 KDKA (WBXK).—East Pittsburg, Pa 62.50 42.75 25.40 KEJK (W6XAN). —Los Angeles, Cal 105.90 KEWE.—Bolinas, Cal 14.10 KFPY (W7XAB). —Spokane, Wash. 105.90 KFQU (W6XBH). —Holy City, Cal. 31.00 KFQZ (W6XAL). —Hollywood, Cal. 108.20 KFVD (W6XBX). Culver City, Cal / 105.00 KFWO (W6XAD).—Avalon, Cal. .. 53.07 KGER (W6XBV).—Long Beach, Cal 45.86 KGB.—San Diego. Cal 65.18 KGDE.—Barrett, Minn 40.00 KGO (W6XAX, W6XN). San Francisco, Cal 10 to 40 ICHJ (W6XAU).—Los Angeles, Cal. 104.10 KJBS (W6XAR). —San Francisco . 61.00 KJR (W7XC, W7XO). Seattle, Washington 105.20 KMOX. —St. Louis, Mo 49.00 KMTR.—Los Angeles, Cal 108.20 KNRC (WGXAF). —Santa Monica, Qoj 108 20 KNX (W6XA).—Los * Angeles,* Cal. 107*. 10 KOIL (W9XU). —Council Bluffs, la. C 1.06 KWE-KEWE.—Bolinas, Cal 14.10 KWJJ (W7XAO).—Portland, Ore. . 53.54

AERIALISMS .

The inductance value of a low-fre-quentcy choke partly depends upon the amount of current passing through it, and its inductive value decreases as the current increases. ... One of the advantages of using a high-resistance potentiometer for controlling volume is that no distortion is introduced by this method. • • • One disadvantage of a low-resist-ance voltmeter is that it takes an unnecessarily high current from the battery, or whatever source is being measured. * * * The use of the correct type of valve is one of the secrets of successful ) distortionless reception. i * * * Where binocular coils, astatic coils, 5 or the so-called fieldless coils are used, the amount of screening re- > quired for H.P. stages is correspond- ) ingly reduced. * * * It is impossible to exercise too 9 much care in the wiring, etc., when high-tension is being taken from the u mains. Careless or faulty handling of wires connected to the electric light mains may result not only in dangerous shocks but in a risk of fire due to • electrically heated wiring, o * » * ® Arc lamps as used for “sunlight” o ray treatment are capable of causing o tremendous interference with nearby receiving sets. 9 * * « q Generally speaking, a wave-trap is not much good for cutting out local interference of the type caused by o trams, flashing signs, power lines, etc. * « » 0 Advertising signs of the flashing electric type are capable of causing 0 almost unbearable interference in neighbouring wireless sets if carelessly wired or maintained. 4 . . * Good long distance reception is ab--0 solutely impossible if the set is oseilo lating. 0 ... When received from a charging o station the voltage of a two-volt bato tery should be a little above two volts, o the usual reading being 2.1. o ... 0 When it is newly received from the charging station a four-volt battery 0 should show a reading of approxi- ® mately 4.2, and a 6-volt battery a reado ing of approximately 6.3 volts. '0 0 2YA CHANGES WAVE-LENGTH o q In compliance with the decision of 0 the Washington P„adio Conference, 0 which considered and allotted the wave-lengths of all broadcasting stas tions, rating them in kilocycles, 2YA’s wave-length will, from last Thursday, 0 be 720 kilocycles (or 416.7 metres), 0 instead of 420 metres (or 716 kiloq cycles). As all wave-lengths have to o be in multiples of ten kilocycles, £YA's 0 j wave-length has had to be taken to the 0 j nearest “ten,” which is .(20,

RIALTO AND REGENT, EPSOM “KITTY” The film version of the novel “Kitty.” by Warwick Deeping, who also wrote “Sorrell and Son,” heads the programme now showing at the Rialto and Regent, Epsom, Theatres. Four well-known players, Estelle Brody, John Stuart, Dorothy Cumming and Marie Ault, dre seen in the leading role. The film concerns the lives of Alex. St. James, a young officer of the Royal Air Force, and Kitty Greenwood, a pretty girl who is employed in her mother’s shop. Meeting Kitty casually in the shop, Alex, falls in love with her, and before his return to France is secretly married to the girl. His mother, a haughty aristocrat, learns of the marriage, and sends a malicious letter to her son, telling him that Kitty has proved unfaithful. Sent home on leave, Alex, is prevented from seeing his wife, but a reconcilation is finally effected,

SUBURBAN THEATRES At the Prince Edward Theatre this evening the films will be the silent version of “Mother Knows Best" (Madge Bellamy and Louise Dresser) and “Strong Boy” (Beatrice Joy and Victor McLaglen). The final of the children’s singing competitions will be held tomorrow evening. The Grey Lynn Cinema is showing “Seven Footprints to Satan” (Thelma Todd and Creighton Hale); also “Five and Ten Cent Annie” (Louise Fazenda). At the Parish Hall, Devonport, the following pictures will be screened: “Trent’s Last Case” (Marceline Day, ! Raymond Griffith and Raymond Hat- | ton), and “True Heaven” (Lois Moran i and George O’Brien),