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22 Radio Broadcast
BEFORE — AND AFTER
The original and a radio transmitted version of a photograph sent during the early experiments of the Cooley-Hainsworth system. The picture on the right was sent with fifty dots to the inch. Average newspaper halftones have sixty-five dots to the inch (this magazine's halftones have 1 10 dots to the inch)
HO^.R. 8, HOWELL, OCTOBER l,l$24f
*ASHJKGT0H,D.C.
DEAR SENATOR HOWELL: • *AY J CALL YOUR ATTENTION TO A SE* YETHO'D OF CA*y.0r<ICATIO8, THE RADIO PHOTO LETTER, »T RETAINS THE AUTHENTIC CHARACTER OF AN AUTOGRAPH LETTER flHtLE DELIVERING IT AT TH£ SPEED OF RAO 10. IT IS THE BEGINNING OF THE PRACTICAL APPLICATION OF W TEN. YEARS OEVELOPKENT OF A RAD^O SERVICE TO THE EYE. KHER£ HERETOFORE, RAO 10 HAS BEEN DEVELOPED ONLY AS A SERVICE TO THE EAR* ISN'T IT ASOUT T UK. THE GOVERNMENT BEGAN CONSIDERING A MORE RAP 10 COMM
SERVICE TO BUSINESS? PHOTO COPIES OF LETTERS A3E
£D»I$$I81S IN COURT. PHOTO COPIES OF BUSINESS LETTERS J)E-v tViZZtQ 8¥ BADiQ (AT THE SPEED OF LIGHT) SCULO BE UU3T A3
KG WHILE
:oing
COWSRSE LIKE AN ARMY, CA *£Z*M OF CO'SVUKICAT IOH:.
GO FORWARD NO FASTER
ENORMOUSLY HAN ITS
A MORE RAPID MEAffS OF INTERCOURSE p fs£» TOOL FOR SPEEOINO UP BUSINESS, A$S-X SHOULO'^ORRES*
fPSOINtaUY. HfpRfASE OUR NAJIG^AL WEALTH.
A REAL RADIO LETTER Sent by the inventor of the system, C. Francis Jenkins, from Anacostia, Maryland, to Washington by radio last October. The Jenkins system has some points in common with the development of Mr. Cooley, but in essence, the Cooley system operates along other and entirely new lines. The radio photoletter may in a few years be an accepted part of our industrial svstem
systems. A good commercial system of phototelegraphy should be able to transmit, without further preparation, any photograph or message printed on ordinary photograph paper.
THE MECHANICS OF PHOTOGRAPH SENDING
COME systems transmit ^ the signals in dots and dashes instead of dots of intensity corresponding to the portion of the picture being transmitted. The dashes represent dark places in the pictures and the dots make up the light areas. This system is readily adapted to operation on telegraph circuits or radio telegraph stations. The cost of these