Radio Notes & News.
GUIDED BY RADIO. Radio waves, from a wire run along, the ground, may be a moans of guiding the air tran- sports from London to Paris and between other oltles. The plan la being tested.
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MORE LOUD SPEAKERS Thoro snem to be more louder
DANGER TO AIRSHIPS ?
Interesting Japanese Theory. Tokyo, March 15.--The de struction of the dirigiblo 833`last March with the loss of her crow
Wireless Chart Aid Against Shipwrecks. Shipwrecks due to vessels going back to the ship. The time of aground may soon be a thing of thong is also automatically ro-apeakers than receivers, according was caused by a broadcast radio the past as a result of a radio in-corded, vention by Dr. F. A. Eckhardt
NOSABRU.
WHAT THEY ARE SAYING.
Recent Pronouncements of Interest
The message of the future, whether it be written, printed, or mixed with diagrama and pliotographs, including the signa ture of the sender, will, it rooms
firm at Jersey City to figures of various firms. One wave according to Dr. T. Terada, certain, soon be transmitted photo- graphically by radio frequenny at alone roscience professor in Tokyo ja rato ten times faster than was ports the manufacture of between University..
aver possible by the dot and dash 3000 and 3500 abre horns daily.
methods of hand transmission.”-- Maj, Gon. C. McK, Saltzman, U.S. army ohiof signal offloor.
SYMPHONIES ON AIR.
A long ongagement of sym-
Dr. Torada was a member of the board appointed to investigato
The time taketi to transmit the and M. Kelsor, both of the Bureau radio signals is virtually instan- of Standards, says a Washington tauoous. Therefore the lapse bo
twaon tho timo the bomb
Rot
the The invention is being used by is
off and
timo the Coast Survey to make a chart the radio signal is received is of United States waters so accur-figured as the exact time it takes phony concerts has been planned the explosion and after it had. The citizens of the world have it in their pawor to communicatu ate that the exact location of the sound wave to reach the for broadcasting from WJZ and ended its labours without finding with one another without leaving ovory roef and shallow will bo hydrophone.
By figuring the rato sound WJY in Now York. Arrange-a theory ho continued his experi- their homes. Where is it leading known.
Tho marino chart is covored travels under water it is then mant has been made with thements with the above rosult.
American Orchestral Society for}" with figures showing the water possible to tell the exact distance broadcasting all their concerta. Coating a miniature of the dopth at various points. Those of the ship from each hydrophone points must, of course, bo accurand from this to figuro the ately fixed-that is, the ship oxsot location of the ship at non. making the chart must know its The hydrophones are timed so- exact position when taking oach they can't return the sounding
all.at.the same time. sounding.
The old-fashioned method was for sights to be taken from the ship to various prominent objects on land-church spiros, water towers, mountain peaks and the
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TAX ON AERIALS,
To pay for an additional 1000
iko. By taking throo such sights pollcamon on Now York's forco, and measuring the anglos between rum sur has it that there is a plan them it was possiblo to calculato afoot to tax radio aeriale. the ship's location.
Bat this method was inefficient in the extromo. Anything that interfered with the visibility of shore objecta-fog, rain, lazo, storms, darkness-prevented it From being carried out.
and By
Eckhardt's. Keiser's invention a charting ship can dotermine its exact location at any time, and the topthi sounding taken at that location, therefore, may be ac- Durately placed on the chart.
using
Three hydrophones are set at known points a little way off shore in about 60 feet of water. A hydrophone is an instrument for receiving underwater sound.
Euch hydrophons is connected by cable with a radio transmitter -on land.
The charting ship, at sos, fires a amall bomb under water. exact instant of firing is automa
Tho
anent has been specified.
...
NATION-WIDE CHAIN.
No
Tho Radio Corporation of Amorica announoas its intention. to broaden its chain of intercon- nacting stations. do that the entire country may be covered. At prosent about 19 stations aro connected regularly for broad- casting national events,
FADING ON TEST.
The phonomenon of fading and rotated troubles in broadcast- ing and reception are the subjects B French radio of tosts by amateur. near La Mans.
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METAL SPOILS LOOP. Directional loops are hampered tically recorded. The sound of in raception by motal structures the explosion travols through the or parts of buildings. The magnet. water to the hydrophones, each ic properties of nearby bydrophone automatically koys cause a "shadow" to fall across its radio transmitter, and each the loop and diminish its recoiy- er anemittor thon flashes a signaling qualition.
motal
This illustrates the laying of the foundations for a radio life saver. It's the base for the hydrophong which, near the bottom of the son, in con- nocted 10 radio receivers, relays and transmitters on land, so that a ship making & Bounding at soa can tell moro accurately than ever beforo exactly where it in. The U.S. Coast Survoy has boon charting the constlino by this method..
airabip with the aluminum paint that was used on the S33 he found that radio waves dicooted against it produced sparks measuring nearly an inch, and while he has not fully disclosed the nature of the experiment and its results he oxprosaos his con. viction that he has found the causo of the disastor.—Masociuted Press,
PHONES NEED CARÉ, Earphones aro extromoly delicate mechanisms. For long life they should be used carefully, not thrown around or misused in any way.
to May it not bo toward broader political views, more international friendships, and bettor under- standing? There is a thrill 'in receiving music broadcast from Franco, but I believe it is evon Goro awe-inspiring to conversu back and forth with an individual whom you have chanood to meet on tho air."--Hiram Poroy Maxim, prosident of the American Radio Relay League.
"The ora of national broadcast- ing. I confidently ballove, is noarer at hand than may now | Room apparent. When that time comes, not morely the city of Washington but the whole coun- try will attend the inaugural coromonies of tho prosident of the United States; invisible millions will fill the "gallery" of Congress during an important dobate; an entire nation will fall into an expectant hush when a famous singor stops upon tho stage.-David Sarnoff, vico pro- sidont and general managor- Radio Corporation of America,
'DUBMEN'S CROSS WORDS. Even those patient and polite THE LADY ASTOR PICTURE.. men, the conductors of omnibuses, The picture by Mr Charlos may soon be using "cross words, Sims, RA, depicting the intro- for the London General Om-duction of Lady Astor to the nibus Company have started a House of Commons, which waS Cross-word puzzle competition ramoved from Westminster on with a money priza-for thoir | January 1. has boon taken to omployes. Tho idea ig to Badford Collage for Women. The fullness First Commissioner of Works has encourage thought among the staff, which, it is authorized the loan of the picture boliovod, will help to avoid to Bedford College "until such accidents. The puzzlo, painted time as the Government may on a poster, is exhibited at the again requiro it." It is hoped to company's garages, and it is make arrangements for banging also reproduced in the traffic the picture in the Great Hall of circular distributed to employees. | the College.
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