Indianapolis Times, Volume 36, Number 260, Indianapolis, Marion County, 12 March 1925 — Page 17

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AMATEUR STATIONS IN THE UNITED STATES AND CANADA ARE LOCAL TO 19-YEAR-OLD EDWARD M. GLASER, WHEN HE TRANSMITS FROM HIS STATION 2BRB, IN BROOKLYN, N. Y. HE HAS REACHED TO INDIA, AUSTRALIA AND ALASKA WITH HIS TRANSMITTING SET AND HAG HEARD FAR OFF AUSTRALIA WITH HIS SIMPLE RECEIVER. GLASER S TRANSMITTER. WITH TS 250 WATT TUBE, IS SHOWN AT THE LEFT. IN THE UPPER INSET IS GLASER HIMSELF. BELOW HIM IS HIS THREE-TUBE RECEIVER.

INTERNATIONAL RADIO CONFAB IS CONSIDERED House of Representatives Opposes Appropriation . of $75,000, Bw Times Special WASHINGTON, March 12.—The House of Representatives has approved an appropriation for $75,000 for an International radio conference to be hold in Washington this fall. Should the appropriation also receive the approval of the Senate, which ics deemed likely, invitations will shortly be issued by the State Department to other nations to send representatives. At the Lisbon conference in 1908 for the revision of the telegraph convention signed at St. Petersburg In 1876, it was decided that ,the next conference would be held at Paris In 1915. The United States is not a party to the telegraph convention. The United States participated in the radio conference that was held at London in 1912 and subsequently ratified the convention signed at the close of the conference. Article II of that convention provides as follows:

Plan Washington Visit “The provisions of the present convention and of the regulations relating thereto may at any time be modified by the -high contracting parties by common consent. Conferences of plenipotentiaries having power to modify the convention and the regulations shall take place from time to time ,ach conference shall fix the time and place of the next meeting.” On instructions from the Secreary of State, the American delegates at the conference at London in 1912 invited the delegates to hold the next conference at WashlngttJh and this invitation was unanimously accepted. The proposed conference- will consider the great advances in the radio art that have taken place since the convention was drafted in 1912. That convention dealt only with radio communication between ship and shore stations. Since then the question of the regulation of radio telegraph communication between shore stations in different countries, the development of the radio telephone as a means of communication and radio broadcasting have become of national importance. Comparison of Notes furthermore, many of the provisions of '.he London convention of 1911 have become antlqu&te .and are no! fcillL'tred strictly because adhei snoe to them would hamper Oontpleto Installed M.IHAWK-RADIO Flvte Tube*—Jut One Dial £|Q(j INDIANAPOLIS REFLEX RADIO COMPANY, m *. JfABKBT. BI ley Met

rapid and efficient handling of communications by radio. User of radio in this country should be deeply interested in the work of the conference. Commercial organizations and merchants all over the country will be greatly benefited by improvement in international communication which should be brought about as a result of the conference. In addition, the conference will enable the representatives of the various countries to compare notes on the progress that has been made in the line of invention, construction and extensive communication during the last five years.

AMATEUR SENDS RADIO SIGNALS DURINGDAYTIME Short Wavelength Permits Transmitting Across Ocean, Bu Times Special SOUTH MANCHESTER, Conn., March 12.—1n broad daylight -at 10 am., Eastern Standard Time, when radio waves generally reach out with only a small percentage of their normal strength on account of the deadening effect of the sun’s rays, John L. Reinartz, inventor and radio amateur of this place, succeeded in sending signals from his code transmitter across the Atlantic ocean. He used a wavelength of twenty-one meters, further proving his theory that the very short waves can be as effective in daylight as the longer waves are at night. This feat is the culmination of many months of experimenting during which Reinartz has been cooperating with the Navy department and amateur members of the American Radio Relay League. His success in being heard across the Atlantio In daylight was confirmed by the A. R. R. L. following receipt of a radiogram from a British open ator. His signals were picked up with great reliability by F. A. Mayer, radio amateur of Wickford, England. At the time, of course, the signals were In broad daylight all of the way.

Relief Is Promised The A. R. R. L. believes that these experiments by Reinart* have done more than anything else to prove that the short waves promise eventually complete relief from daylight troubles. A few months ago Reinartz’ signals were heard In daylight across the continent by an amateur living near the west coast. His work is regarded as the moat important radio development since amateurs In Europe and the United States began to exchange messages across the Atlantic Ocean In both directions on short waves. It was in 1921 that the American amateurs accomplished initial laco>ss in their fight to conquer the Atlantic Ocean. That has been con-

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tinued during transatlantic tests from year to year until individual communication nt night is now common. Reinartz has been pioneering in anew field, that of short wave daylight transmission, and his work is in the nature of a personal triumph. FOR THE NOTEBOOK Do not expect great things from cheap radio sets. The best set for distance is one using radio frequency amplification. A small toothbrush, used dry, will help to keep the interior of a set clean. Do not use oil of vaseline on switches. They are poor conductors of electricity. Each amplifier requires an audion, whether it is radio or audio amplification. When experimenting with various hook-ups. make up several lends with various length connections. A dry battery can be ruined by dropping it on the floor. The shock will break some of the internal connections. Loose connections, poor Insulation and the like may put any set out of commission as far as results are coneehned. Freak transmission (and reception) is due to a condition—a station on one occasion may send from Tokio to Honolulu and never repeat the performance just because conditions exactly similar may not again occur. How to Plug Holes Holes In a fcakelite panel can be filled with black sealing wax. If the holes are filled a little more than flush and the entire panel then sandpapered until it has a dull finish, the patch will be scarcely perceptible.

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