OTHR
From HFUnderground
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| - | '''Over-The-Horizon Radar''' is a military radar system deployed by the United States in various places outside the continental USA. In recent years, interference assumed to be from these systems has been widely noted in the shortwave pirate and [[amateur radio]] bands, primarily around the area of 7 MHz. The sound of these systems on typical shortwave receivers sounds like a loud, wideband chirping, and [[Old buzzard|older listeners]] liken the sound to the [[Duga Radar|Russian Woodpecker]], a similar [[HF]] radar system of Soviet design. | + | '''Over-The-Horizon Radar''' is a military radar system deployed by the United States in various places outside the continental USA. In recent years, interference assumed to be from these systems has been widely noted in the shortwave pirate and [[amateur radio]] bands, primarily around the area of 7 MHz. The sound of these systems on typical shortwave receivers sounds like a loud, wideband chirping, and [[Old buzzard|older listeners]] liken the sound to the [[Duga Radar (Russian Woodpecker)|Russian Woodpecker]], a similar [[HF]] radar system of Soviet design. |
== See also == | == See also == | ||
Revision as of 17:37, 24 July 2019
Over-The-Horizon Radar is a military radar system deployed by the United States in various places outside the continental USA. In recent years, interference assumed to be from these systems has been widely noted in the shortwave pirate and amateur radio bands, primarily around the area of 7 MHz. The sound of these systems on typical shortwave receivers sounds like a loud, wideband chirping, and older listeners liken the sound to the Russian Woodpecker, a similar HF radar system of Soviet design.
See also
