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short wave

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short wave

[′shȯrt ¦wāv]
(oceanography)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

short wave

Radio waves shorter than a 200-ft (60 m) wavelength. For short-wave communications, the frequencies used are above 5 MHz.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

shortwave radio

Radio transmission in the 1.7-30 MHz frequency range worldwide. Like AM radio, shortwave signals reflect back from the ionosphere and follow the curvature of the earth. As a result, shortwave (SW) signals can span hundreds and even thousands of miles.

The shortwave term was coined in the early 1900s when radio emerged, and the spectrum was divided into short, medium and long wavelengths. Ham radio operators continue to use the shortwave bands (see amateur radio). See AM radio and FM radio.
Copyright © 1981-2025 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
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References in periodicals archive
Since short-wave range is not in the focus of commercial interest, there is a lack of comprehensive data about spectrum usage and electromagnetic noise level in Estonia.
When, in February 1942, VOA needed to supplement its BBC relay transmissions with direct short-wave broadcasts, it had to lease privately owned transmitters to relay the New York produced programs.
YANGON - Sales of short-wave radios in Myanmar rose 50 percent in recent weeks, apparently driven by public enthusiasm for updated news broadcasts from foreign radio stations, after the deadly May 7 bombings in capital Yangon, weekly news journal Kumudra reported in its latest issue.
However, their introduction into the UK has been delayed by the Radio Communications Agency, who believe that using this particular frequency raises interference issues with current radio users, including short-wave radio enthusiasts and radio astronomers.
Not counting Short-Wave News, New York Education Law Report, and Pennsylvania Education Law Report, all growth has been by acquisition."
Mr Piggot was aware that green leaves and the iron oxides in iron ore dust have distinctive spectral signatures in the visible to short-wave infrared region of the spectrum.
At first, young Rob longs for his father, trying to find him on the airwaves by listening to late-night short-wave radio.
Sometimes it was new music, sometimes scratchy short-wave radio simulations, sometimes nature sounds and an endless assortment of bells, whistles, and electronic contortions.
diplomats stationed in Havana, including the distribution of hundreds of short-wave radios to anti-Castro "counter-revolutionaries" reports Reuters (April 5, 2002).
"As the vehicle passes through a communication zone, a short-wave radio frequency is sent from the transponder to the lane transceiver," explains Symons.
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