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Helicopter TV Stations.-Helicopters-the intrepid "whirly birds" of numerous military and civilian rescue missions-now may become self-contained flying television st#ions during major naval operations. Developed at Philco Corporation's Government & Industrial Division for the Navy Department's Bureau of Ships, a new airborne TV system is said to provide excellent operation over line-of-sight distances of more than fifty miles. Systems of this type could be used by the Navy for control of amphibious landings.
The system, an ultra-high frequency FM radio television link, provides for transmission, reception and display of TV information from the air to surface ships, or ground installations. During recent tests with the fleet, the Navy reported that excellent pictures were obtained of al1 phases of ship-toshore movement, even before sunrise.
Philco, which has been experimenting with different systems of airborne TV transmission, has just completed additional low-altitude tests over the Philadelphia area.
The tests were conducted in the UHF region of 894 megacycles and were from altitudes between 500 and 2500 feet.
Philco recently announced that it had developed an airborne TV system for use in jet aircraft reconnaissance by the U. S. Air Force.
That system may be used to transmit a TV picture from the stratosphere.
The airborne equipment for the new Navy TV system includes a frequency modulated transmitter of 100 watts effective radiated power, image orthicon camera, ceder (timing
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