Indianapolis Times, Volume 46, Number 136, Indianapolis, Marion County, 17 October 1934 — Page 30

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How to Tune All-Wave for Foreign Stations

Operation of New Sets Is Made Simple

Build Your Own Log Book and Be Patient, Is Advice. Makers of the new all-wave radios have exerted every resource of the engineering genius at their command to simplify the reception of distant short-wave stations. Their progress, as exemplified by the sets on display during the citywide radio progress exposition, has been sufficient to enable a child of average intelligence to bring in foreign broadcasts. But to get the most out of the low bands which can reach almost around the world, there are some important things arising out of the very nature of short-wave broadcasting which you should know and observe. Though the development of shortwave transmission has been advanced rapidly, it is still not perfect and not all of the foreign stations have sufficient power to carry their broadcasts everywhere with signals of equal strength. Wave Lengths Change Neither does every short-wave station broadcast at all hours of the day and night. This means, of course, that you can not expect to get Berlin, for example, when Berlin is not on the air. On the other hand, Berlin may be broadcasting while you are away from your radio. Foreign stations sometimes, by way of experiment, change the frequency of their broadcast Cor yi ave length), which means that you will not find the same station always on the same spot on your dial. It may vary a bit. The fact that a station is listed for one frequency, does not mean that it will not use others. Many have several wave lengths. They may pick any one of the several for experimental purposes. Most any time of the day or night, however, weather conditions being equal, there is a short-wave station transmitting from somewhere. Cheek Up Schedules It is a good practice to check up on printed schedules which are available through most any of the radio stores participating in the radio progress exposition, for time and wave length of the stations you want to get by keeping your own wave log. Refer to your comparative time tables for the time of the sched - uled broadcast, for you must remember that when it is day time in America it is night over Europe. Generally speaking, from daylight to about the middle of the afternoon and particularly during the brightest part of the day, you will be able to get short-wave stations broadcasting between thirteen and twenty-two meters (or between 21,540 and 13.000 kilocycles). The twenty to thirty-five-meter spread has been found best for the listener to the east, regardless of whether the listener is in the United States or in China, from about noon to two hours before midnight. After dark stations broadcasting on wave lengths above thirty-five meters usually can be heard much better than during daylight. Be Patient The twenty to thirty-five-meter spread will be found best for the listeners to the west from about midnight to daylight. Above all be patient. Tune slowly. Go back and forth over each band carefully. Then you will get the best results. Radio makers have taken the human element of impatience into consideration, apparently, in the construction of the new all-wave sets, for they have provided them with dual-speed tuning knobs and bandspreading devices which in a sense magnify the dial over which your needle passes. This makes careful tuning easier. It spreads the thumb turn over a greater distance than the needle pointer actually passes over the dial, putting a brake on the dialer's imminence. It makes it easier to

Guide to Foreign Stations Here is a brief list of some of the foreign short wave broadcast stations. Times given are Eastern Standard. In dialing, remember that at 7 a. m. here it is 12 noon in London. Tune carefully. Remember, too, that foreign stations often change their wave lengths. It’s best to keep abreast of such changes through regularly published lists. Wave in Station Station Time of Meters Call Location Broadcast EUROPE 13.97 GSH England 6 00 to 8:30 A. M 16.86 GSG England 6 00 to 8 30 A. M 8:45 to 10:45 A. M. 16 88 PHI Holland 7:30 to 9:30 A. M. Monday, Tuesday, Friday 19.68 France 7:00 to 10:00 A. M. 19.73 DJB Germany 8:00 to 11:00 A. M. 12:20 to 2:30 A. M 19.82 GSP England 8:45 to 12:45 P. M. 19.84 HVJ Vatican 5:00 to 5:15 A. M 24.53 CTICT Portugal 4:00 to 6:00 P. M. Thursday 25 RNE Russia 10:00 to 11:00 P. M. Saturday „ „„ 10:00 to 11:00 A .M. Sunday 25 20 Franc# 10:15 A. M. to 1:15 P. M. 25.40 2RO Rome 11:30 A. M. to 12:30 P. M. ~ 1:15 to 6:00 P. M. 25.51 DJD Germany 12:15 to 4:00 P. M. ~ c, „„„ 5.00 to 10:30 P. M 25.53 GSB England 12:15 A. M. to 2:20 A. M. 1:00 to 5:30 P. M 6:00 to 8:00 P. M. 50 ni France 2:00 to 11:00 P. M, 30 in Belgium 1:45 to 3:15 P. M. 31 03 £4? Spain 5:15 to 7:00 P. M iviL “55; Geneva 5:30 to 6:00 P. M Saturday £SC England 6:00 to 8:00 P. M 2} DJA Germany 5:00 to 8:15 P M 2} ’V Denmark 2:00 to 6:00 P. M oi ts Jtok Norway 11:00 A. M. to 5:00 P. M. a3 England 1:00 to 5:30 P. M. SZS Hungary 3:00 to 5:00 P M.. irregular ia oS Russia 2:00 t 6:00 P. M 4U.83 DJC Germany 845 to 10:30 P M. soon „ 12:15 to 4:00 P M 50.00 RVS 9 Russia 2:00 to 6:00 P. M. SOUTH AMERICA 32.02 HPSABH Colombia 11:00 to 12:00 A. M. and .. 7:30 to 9:30 P. M. 40-5S HJ3ABD Colombia 7:30 to 12:00 P. M. 41.60 HJ4988 Colombia 8 00 to 10:00 P. M. 45.00 HC2RL Ecuador 5:45 to 7:45 P. M Sunday 48.78 YV3RC Venezuela 10:30 A. M. to 1:00 P. M. 4:30 to 10:00 P. M. 49.08 YV2RC Venezuela 10:30 A. M. to 1:00 P. M. .. „ 5:15 to 10:00 P. M. 49 20 HJIABD Colombia 11:30 A. M to 12 30 P. M. 7:00 to 9:00 P. M. 50.08 YV4RC Venezuela 4:30 to 10:30 P M. 73.00 HCJB Ecuador 7:30 to 9:45 P M . except Monda AUSTRALIA 31.28 VK2ME Sydney Sunday. 12:30 to 2:30 A. M. 4:30 to 8:30 A. M. 9:30 to 11:30 A. M. 31.31 VK3LR Melbourne 3:15 to 7:30 A. M daily, except Sunday 31.55 VK3ME Melbourne Wednesday. 5:00 to 6:30 A. M. Saturday. 5:00 to 7:00 A. M. ASIA 27.93 JVM Japan 4:30 to 7:30 A. M. 38.07 JYR Japan 4:50 A. M. to 7:30 A M. 48.92 ZGE Malay States 8:00 to 10:00 A. M.. daily 49.10 VUC Calcutta 11:45 P. M. to 3:00 A. M. 49.42 PKIWK Java 8:50 to 10:15 P. M.. Sunday 4:15 to 6:00 A. M. 49.90 ZHI Singapore 11:00 P. M. to 1:30 A. M. Sat.. Sun.. Tues.. Wed. AFRICA 23 38 CNR Morocco 7:30 to 9:00 A. M.. Sunday 37.33 CNR Morocco 2:30 to 5:30 P. M . Sunday 49.00 Johannesburg 8:00 to 10:30 A. M. and 11:00 A. M. to 3:40 P. M.

New Dials on All-Wave Sets Designed to Simplify Tuning

Dials on the all-wave radios for 1935 present an entirely new appearance and at first glance seem to be an impenetrable mystery. But a second glance will reveal their now-kilocycled faces to be a marvel of simplicity pointing the way for dialers to foreign lands and hitherto unexplored mysteries of the ether. Generally speaking the new dials are divided into bands and when the needle pointer is traveling through a given band the set is in position to receive certain very definite types of broadcast.

Remote Control of New Sets Highly Developed This Year

Remote control of the new radios is being offered in more highly developed fashion with the new season than ever before. Remote control is the device which enables you to get wanted stations from your arm chair across the room from the radio itself, and to control the amplification and tone from that same spot. Or you can move the remote control device into an entirely different room if you qare. Several different specially matched

separate one station from another close by. It must be borne in mind, too, during this careful tuning that some of the wanted foreign stations are thousands of miles away and that their signals may come in very weakly at first. Your automatic volume control can then be brought into play to enhance the audibility of the weak station you sought and finally found, and to keep it coming in strong. Still another thing to bear in mind is that the sensitivity of the short-wave sections of your all-wave set is so great that extraneous noise will find its way through your set unless it is carefully tuned. Best results can be obtained by equipping your set with one of the new type aerials which are being brought out to aid in the reception of short-wave broadcasts. The makers have gone a long way

THE INDIANAPOLIS TIMES

Os course there is the standard broadcast band on which regular American broadcasters are available. Then you will find another which charts your way to police, aircraft and amateur stations. A third will lead you to ships at sea. South American short-wave stations and United States shortwave stations. And the fourth to foreign broadcasts from all over the world. Different manufacturers have devised different, simple little controls by means of which to bring any one of the dials into play.

remote control sets will be on display in the major radio stores of the city during radio exposition week. Remote control, definitely is a luxury in the field of radio equipment, and becomes a necessity only when the comfort of an invalid who can not move easily from spot to spot, is involved by way of exampie, and the family finds it impractical to buy an additional radio for the pleasure of the invalid. With it, the invalid can change stations at will from bedside.

toward the elimination of extraneous noise which for a time threatened to defeat the popularity of short-wave reception, but again by careful tuning and proper equipment you can improve the quality of your own reception. The most successful dialers, it has been determined from a check upon many, are those who tune carefully and patiently. CONCERTS TO CONTINUE Expectations are that the Gladys Swarthout Monday night concerts will continue throughout the season. ONE STATION IMPORTANT The one station of any importance in darkest Africa, which is the Belgian Congo, is OPH at Leopoldville.

Time Factor in Obtaining Best Results Don't Expect to Hear Station That Isn't on the Air. International time is an important factor in the successful operation of the all-wave set. For the station which you want to receive from some foreign country obviously will be in operation at some different hour of the clock than is shown by your own watch here. It is daytime in America when it is night over parts of Europe and vice versa, and that, in a measure, accounts for the fact that evening broadcasts from Germany may be coming to you in broad daylight. Practically all of the dealers who are participating in the city-wide radio exposition have pamphlets or log books or simple guides of convenient kind, which they provide for those who obtain all-wave or short-wave sets from them. Clarify Time These guides will greatly clarify this matter of comparative time with their maps and tables illustrating the difference of time the world over. Generally speaking, the world is divided east and west into twentyfour hours of time and for each zone of time that you move east one hour is added to the time at home. And for each hour that you move to the west, one hour is subtracted from the time at home. Thus when it is 7 a. m. in New York, barring arbitrary local day-light-saving regulations, it is noon in London and 10 p. m. of the night before in Sydney, Australia. Practically all of the short-wave radio logs which you will be using in guiding yourself around the world on ether waves use Eastern standard time as the basis for their logs. Conditions Change

This means that the time given for a station to be on the air is United States time, and the time against which you should reckon in adjusting your reception schedule. Because of local time traditions in countries the world over and because of the rapidly changing conditions in the broadcast of short wave, it is wise for the dialer to note down changes of time of reception for foreign stations as against those given in logs which may be slightly out of date. It will not be long, if the dialer does this, before he is on familiar terms with the time factor in the reception of short-wave stations. The time that the signal from the distant broadcasting station takes to reach your receiver is so minute that it does not figure in any of the time factors. World’s Other Side One of the fascinating things about short-wave radio is that you can listen, for example, to a midnight broadcast from abroad during the late afternoon at home, and that the intimate glimpse into the other country is coming to you instantaneously over a distance of a thousand miles. With some of the best and most sensitive sets on the market, all general conditions being favorable, it is possible to pick up signals from the other side of the world and to bring them in strong and clear. ALASKAN STATIONS Short-wave radio is one of the principal means of communication between towns in Alaska and between Alaska and the United States. LONG REHEARSALS Paul Whiteman has been quoted as saying that he rehearses his orchestra as much as six hours before permitting it to go on the air. SEVEN YEARS OLD The Columbia Broadcasting system was seven years old September 18. It numbers upward of eighty stations in its chain.

OCT. 17, 1931

CALL LETTERS KEY LOCATION OF STATIONS All countries of the world have definite blocks of call letters assigned to them for use by their short wave stations. The call letters are international in character. They help you to recognize the nation sending out a broadcast through you do not recognize the language or hear the exact location. For example, the G block has been assigned to Great Britain. GSH would be a station in England. It is, a matter of fact, one of the calls assigned to Daventry, W and N blocks are assigned to the United States. Here is a list of international call assignments that will be helpful to you: Country Prefix for Block of Calls amateurs CAA to CEZ Chile CE CFA to CKZ Canada VE CLA to CMZ Cuba CM COA to COZ Cuba F CPA to CPZ Bolivia CP CSA to CUZ Portugal OT-1 CVA to CXZ Uruguay CX CYA to CZZ Canada VE D Germany D EAA to EHZ Spain EA EIA to EIZ Irish Free State El ELA to KLZ Liberia EL F France FS G United Kingdom G HAA to HAZ Hungary HA HBA to HBZ Switzerland HB HCA to HCZ Ecuador HC HHA to HHZ Haiti HH HJA to HKZ Colombia HJ HPA to HPZ Panama HP HRA to HRZ Honduras HR HSA to HSZ Siam HS HVA to HVZ Vatican City I Italy | J Japan K U. S. possessions LA A to LNZ Norway LA LOA to LWZ Argentine LU LZ to LZZ Bulgaria LZ M Great Britain G N United States W OAA to OCZ Peru OA OEA to OEZ Austria OE OFA to OHZ Finland OH ONA to OTZ Denmark OZ PAA to PTZ Netherlands PA PPA to PYZ Brazil PY R Russia SAA to SMZ 3weden SM SOA to SRZ Poland SP STA to SUZ Egypt ST SVA to SZZ Greece SV TAA to TCZ Turkey TA TFA to TFZ Iceland TF U Russia VAA to VGZ Canada VE VHA to VMZ Australia VK VPA to VSZ British Colonies VBL VXA to VYZ Canada W _ United States XAA to XFZ Mexico X XGA to XUZ China YOA to YRZ Roumania CV YVA to YWZ Venezuela YV ZKA to ZMZ New Zealand ZPA to ZPZ Paraguay ZP ZSA to ZUZ South Africa ZS

Tuning Knobs Aid High Selectivity Some notion of the way the manufacturers have aided the dialer in tuning in short-wave stations on their all-wave sets may be had from an example. When the standard broadcast band is in operation, eleven turns of the knob takes the dialer from end to end to produce local accurate tuning. But when you shift a short-wave band where the stations are closer together, into position by means of a simple adjustment, 62 turns of the tuning knob are necessary to take you from one end of the dial to the other. Thus the finer, more sensitive selection necessary for good shortwave tuning, is automatically built into the all-wave set, making selection of a foreign station almost as easy as selection of a local standard broadcast. Skip Distance Is Factor in Radio The skip distance factor is one to be considered in short-wave reception. It means what it says , literally. Short waves being broadcast from a given station rise angularly toward an atmospheric layer far above the earth, from which they rebound at an angle. Thus they skip across wide areas to another far distance, where they may be received readily. Directional antenna are employed to point the waves toward given areas of the earth's surface. TWO IN CAIRO There are two short-wave broadcasts from Cairo in ancient Egypt, SUZ and SUV. The former schedule is 7 a. m. to 3:30 p. m., and the latter after 3:30 p. m. RADIO TO TANKS Orders to crews manning tanks were transmitted to them over radio recently during the course of French maneuvers.