![]() "In Green Bank, though, the rules are even stronger, so much that some residents who are in direct sight of the radio telescope receivers, can't use Wi-Fi devices and even microwave ovens in all Green Bank Radio Astronomy housing units. Ĭellular telephone use in the central area of the zone is also very restricted. It does not have enforcement power (although the FCC can impose a fine of $50 on violators ), but will work with residents to find solutions. The Observatory polices the area actively for devices emitting excessive electromagnetic radiation such as microwave ovens, Wi-Fi routers and faulty electrical equipment and request citizens discontinue their usage. The most severe restrictions to the general public are imposed within a 20-mile (32 km) radius of the Green Bank Observatory. Exceptions to restrictions are usually determined on a case-by-case basis, with preference given to public safety concerns, such as remote alarm systems, repeaters for emergency services, and NOAA Weather Radio. The only broadcast radio stations are part of the Allegheny Mountain Radio network, with just one station in the AM band, and several low-power FM broadcast translator stations. However, large transmitter owners must typically coordinate their operations with the Green Bank Observatory. For example, emergency service (police, fire, and ambulance) radios and CB radios are permitted. Not all radio transmissions are prohibited in the Quiet Zone. Restrictions of transmissions are strictest within ten miles (16 km) of the Green Bank and Sugar Grove facilities, where most omnidirectional and high-power transmissions are prohibited. This makes cable and satellite all but essential for acceptable television in much of the region. Most broadcast transmitters in the central area of the Quiet Zone are required to operate at reduced power and use directional antennas. Restrictions Ī modern patrol truck equipped with detectors. ![]() The NRQZ is centered between the Green Bank Observatory in Green Bank, West Virginia, and Sugar Grove Station in Sugar Grove, West Virginia. It straddles the borders of Virginia and West Virginia, and also includes a small part of Maryland. The Quiet Zone is an approximate rectangle of land, 107.0 miles (172.2 km) on the north edge, 109.6 miles (176.4 km) on the south edge and 120.9 miles (194.6 km) on the east and west edges, comprising approximately 13,000 square miles (34,000 km 2 8,300,000 acres). ![]() About half of the zone is located in the Blue Ridge Mountains of west-central Virginia while the other half is in the Allegheny Mountains of east-central West Virginia a small part of the zone is in the southernmost tip of the Maryland panhandle. The National Radio Quiet Zone ( NRQZ) is a large area of land in the United States designated as a radio quiet zone, in which radio transmissions are restricted by law to facilitate scientific research and the gathering of military intelligence. The NRQZ includes portions of West Virginia, Virginia, and a small part of Maryland. ![]()
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