Radio mirror (Jan-Oct 1923)

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10 RADIO DIGEST June Q. 1923 Radio Digest Illustrated Htu. U. S. »-AT. OFI-. Published by the Radio Digest Publishing Company, Inc. 123 West Madison Street Telephone State 4844-4845 Chicago, Illinois E. C. RAYNER. Publisher Chas. F. Smisor, Editor Evans E. Plummer, Managing Editor Harry J. Marx, Technical Editor Eastern Representative, Jacob Miller, Times Bldg., Times Square, New York; Telephone Bryant 4909 Pacific Coast Representatives E. J. Wood, 251 Kearney St., San Francisco Telephone Kearney 1472 H. M. Morris, 417 Western Mutual Life Building. Los Angeles Telephone 12011 58 PUBLISHED WEEKLY SUBSCRIPTION" RATES . . . .$5.00 Foreign. . Single Copies. 10 Cents .$6 00 Chicago, Saturday, Jnne 9, 19^3 No. 9 ~ -Build Your Own Set Learn the Why With Simple Apparatus THEBE is no reason for buying an expensive set to start with and? in fact, it is much better to begin by buying parts and assembling them. In this way one learns the why and wherefore of each part and its relation to the others. It is much more pleasant to rig a simple outfit and to get results than to fuss with a complicated set and get no results. Badio work offers to the younger mind a tremendously valuable developer of "logical analytical thinking more effective than school-book methods because this object is accomplished while affording entertainment. After one has become able to operate his set and get good results from it, he can then entertain the rest of the family and even his friends. On account of so many stations broadcasting one can just about choose his programs, once he has them in advance. Range of Receiving Set Reception Due to Local Conditions WHEX consideration is given to the distance a transmitting station will radiate signals or to the operating radius of the receiving set it is important to make a distinction* between the reliable range and the variable or occasional range. The range of a receiving set depends in a large measure upon the local conditions, whether it is located in an open country with but few interposing obstacles to absorb the Badio waves or whether it is surrounded by lofty buildings constructed with framework of steel. The simple, well-constructed receiver employing a crystal detector and using a single wire outdoor antenna approximately 100 f*et in length elevated at least 20 feet above the ground has a daytime range of about 25 miles while at night signals from much greater distances are easily received. If the crystal detector is replaced by a vacuum tube detector the reliable operating radius of the set is increased to approximately 75 miles and there is considerable improvement in the receiving qualities due to the sensitive properties and amplifying action of the tube which secures louder music or speech. A simple regenerative receiver using an outdoor antenna will cover a distance of approximately 100 miles. Better Equipment for Summer Distance Reception Proving Good This Year MANY people will be able to obtain more real enjoyment and benefit from Badio this summer when, of course, they have more spare time, and on their vacations than in the winter months. Thousands of sets will be taken on vacation trips. Badio today is far different than it was a year ago and the Badiophan will find more things in" his favor this summer than last. Last year few persons would believe that the voice could be" transmitted four or five thousand miles. Today thev are entering on a new field of Badio and sets are being made that will receive from stations thousands of miles distant, while a few hundred miles was the limit of a year ago. Then several hundred dollars was paid for sets that could not be sure of receiving broadcasts over five hundred miles. Xow, less money will buy better sets able to reach from coast to coast. The receivers used a year ago would pick up everything in the air for a short distance and would not tune out interference. Sets are now procurable that will single out almost any station while scores of other stations are broadcasting. Then again, the new wave allocations put into effect May 15, have aided the solution of the interference problem. Any person who has a chosen set in his mind and is waiting until next fall before making the purchase, is sure going to lose many interesting hours of real enjoyment this summer. But those with keener judgment will first make inquiry about what now, may be expected in range and clearness of reception of broadcasting with a properly constructed set during the summer months. A keen interest is bound to continue throughout the summer. RADIO INDI-GEST INDIGEST BROADCAST PLANT SOON BEGINS TO START TO COMMENCE Around the World with Radio WALLA WALLA. — The handsome and sanitary new broadcasting station owned by INDIGEST is now ready for operation and will soon be heard on the set wave length of S>9 2 :; feet. This new quick-service free air station will be operated on a cut-rate policy and will give broadcasting service dav or night. It is located on the picturesque little island of Walla Walla (the natives liked the place so well they named it twice), a tropical land that lies in the midst of the great damp Pacific ocean. The new plant is the most modern to be erected in a radius, as the crow flies in circles, of 7,000 miles and as there is no other station within 9,000 miles there will be no interference. The powerful transmitting apparatus has a range of a. 000 cubic miles. The closest habitation to Walla Walla is 10,000 miles so it should be easily heard by those that tune to the proper wave length. A unique plan is to be put in effect to enable the listeners to tune in properly before the regular weekly programs are broadcast nightly once each month. For five minutes before the station's generator is started or the antenna is raised the announcer will commence to scream, "Help '. Fire ! ! Murder ! ! ! If you hear these frantic cries for succor do not become dismayed or alarmed for it is merely Indigent's method of letting you tune in before the station begins operation. Above Photo Is Flashlight of Our New Station The first of the series of weekly programs will be put on the ozone promptly at 11:93 (Walla Walla timei Wednesday June 31. Remember that Walla Walla time differs from ours as they have a nineteeu-hour day and the time can be reckoned as being the square root of Central time divided by 0.71144^. or just exactly -three days, twentythree hours, fifty-nine minutes and sixty seconds behind or ahead of Central-Pacific time, daylight saving. 3% interest plan. The program to be given Wednesday. June 31, will appear in Indigent next week. A PROBLEM IN SELECTIVITY Jack Spratt installed a Radio, Connected up his phones. And listened in with wife and kids To hear the Broadcasts tones. But Mrs. Spratt likes Classic Themes, The kids, a bedtime yarn; While Jack himself likes Jazzy StuS ; "The rest ain't worth a darn." They can't agree on what is what But live in constant wrangle; Ain't this a doggone problem For Hoover to untangle? — Eazy Lane. Read Indi and You'll Find Out Dear Indi : Here's one I lamped in WOC's program sheet — "A listener in had a sleepy-looking parrot which he kepi as a pet in the same room with his set. One day while the receiver was tuned in on a station he was called out of the room to answer the telephone. A few seconds after he had left the loud speaker broke forth in a clear tone. 'Hello '.' This was repeated several times, the parrot paying not the slightest attention. At the final 'Hello !' the bird opened oue eye, gazed at the set. and snapped out. 'H — 1. man, the line's busy !' " P. S. — Do I get in with this one'; — Polly W. LEM STEBBINS DEGENERATIVE SET VICTORS GET $000,000,000,000.19 The great Indigest §000,000.000,000.19 Cash Copper Contest was officially closed at midnight sharp one noon some days ago. The prize winners were selected and each has been mailed their checks to cover the amount awarded them. Lillian G. was selected as having the best all around paper and was awarded the first prize. Ezra Hecht won second. Pollv W. nabbed third honors and Alagonquin Tonsils III came in fourth. Fifth, sixth and seventh prizes were awarded to Spider Webb, who sneaked in three separate papers. This will serve to notify the prize winners that they are requested to hold the checks sent them until such time that we notify them we have enough money in the bank to cover same. I.-m Stebbins is overmodulated with the novel methods of obtaining his sooper effect, and has immediately taken out patent' papers on ail the circuits which the contest brought in. Here lies frammir James Henry DeFinn, Two lovers icerr talking he listened in. My Yes ! They Plant It by the R. R. Tracks Indi : I garnered this from Station WOC : -F. W. E. signing off in the state where the tall corn grows at exactly 8 :22P. M." Is the corn on a schedule, too? — Le Moqceur You Should Call Him to Time Dear Mr. Gest : I gotta friend who is regular jazz hound. Personally, -I like grand opera once in a while, and am particularly fond of the "Dance of the Hours." from La Gioconda. I told this J. H. to look out for it. so last night he says. "C'mere. I just tuned in, one of your 'Dances of the Hours.' I put on the fones and whaddya think I heard? 'Three O'clock in the Morning' " ! Come to think' it over, he was sorta right at that. hUT W .11. vou know these Jazz hounds. Tours disrespectfully Ellis Beoaklewse Looking Ahead In Next Week's Issue of Indigest Will Start "The Quest of the Kanoofis." This beautiful poem is filled with pathos and melodrama to the point that it is overrunning with tears. It you want a good cry for a dime, get Indigest from your most gor newsdealer — 10c. Condensed By DIELECTRIC Outside antennae are still the vogue among thousands of Badio fans and it is doubtful if the indoor loop will supplant them altogether. Where an aerial is strung in a position to be easily destroyed by a vengeful and irate landlord, he may do it — but look out for judges like Judge Schwaba of Chicago. His conception of home appurtenances places aerials within the safety zone, so far as malicious destruction subject to punishment is concerned. Score one! We all have had a chance to try out the new broadcasting plan by this time. It remains now to hear from the bugs as to their opinion of it. Some I have heard complain that there are still too many broadcasting stations and that these should be reduced to say two large ones in a district, one for the highbrows and one for the — netherbrows. The rest of us are very much enthused with the distinct gain on noninterference. When one large station was sending out its program (which it did from morn 'til night), no other station on the same wave length could be heard nor distant ones on any wave. Xow we can hear them when desired and cut them at will. Thanks be for this! I had lost hope of finding any excuse to mention opera again until next fall, but behold what has taken place in the studio of Station KPO! From their transmitter has come the first broadcast of an entire opera along the whole of the Pacific coast. It was a distinctively domestic product as both librettist and composer are native Calif ornians; however, the audience was most cosmopolitan including listeners in all parts of the country. It' was well worth hearing, too. The Canadian amateurs had a little hard luck recently when they first tried for a relay across the continent during the three-day test. QBM was right on the job in what is thought to be the form of the aurora borealis. This famous phenomenon has been known to serve in that capacity before now. It is just the chance of running afoul of QBM that makes the sport so fascinating. Tou never know when you '11 accomplish what you set out to do. We may detest Germany with all our hearts — and they have proven themselves worthy of it as a nation — yet it is a fact that among them are some very clever scientists. A recent witness to this is the reported discovery of a means of forcing airplanes to light by employing Badio waves of certain characteristics. The French are much disturbed at the news. We managed to find out the secrets of quite a few German inventions during the World War. We mav get this one. You know there are some folks who think it a crime to go to the circus or a prize fight, so they lead their small boys there to show them how awful these things are. Since the coming of Badio has permitted members of this class to listen to the jazziest jazz, the vodevillian 's jests and the exciting descriptions of prize fights in the seclusion of their own homes, they feel much better. They were all listening to the Jess Willard and Firpo bouts I'll wager a new call. Folks were discussing the fight within ten minutes after the finish in towns miles away from the arena. Badio does that. Xot all of the distance records were made during the winter months when conditions were thought to be the most favorable. An amateur station in Connecticut was sending through the ether a short time ayo aud his message was picked up about one hundred miles from Cevlon, India. That is prettv good for a re about 11.000 miles. me^