The last radio transmission anyone remembered hearing was Gallegos warning Hardt off an attempted rescue.
"We are not tracking any pak mil in the area, " they were told in a radio transmission.
They work by detecting the characteristic high-power radio transmission a phone makes when it tells the network it is ready to ring.
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Bluetooth is a low-cost wireless radio transmission specification for creating personal networks of up to eight devices at a distance of 10 to 100 feet.
By changing the frequency of a radio transmission many times a second, causing it to leap around in an apparently random fashion, a radio signal could be made almost impossible to intercept.
Future versions will also allow wireless data transmission over radio frequencies, as well as over home electrical wiring.
Indices for telecommunications, radio, television and satellite transmission services, hotel service, wholesale trade, e-commerce, software and IT services, and water transport all stayed at 60.
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The system can keep track of both friendly forces and the enemy, and allows troops to communicate by e-mail -- a feature that could come in handy if units have radio failures or move out of transmission range.
And always adjust the seat and mirrors, fasten your seat belt, tune the radio in to your favorite station and enter a navigation destination before you shift the transmission into drive.
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While the device uses the same radio frequency band as the upcoming personal area networking technology Bluetooth, it uses a different transmission protocol.
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Do not use Eye-Fi cards inside aircraft, or where the use of radio transmissions are limited or forbidden, or set the Eye-Fi card's transmission function to OFF.
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