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NTIA Spectrum Use Summary
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The federal agencies use this band for fixed point-to-point microwave communication systems for national and military test range communications, and the remote transmission of radar video and other data for functions such as weather, vessel traffic control in harbor areas, and hydroelectric grid power management. This includes the Federal Aviation Administration use of this band for fixed point-to-point microwave communications networks to connect remote long-range aeronautical radionavigation radars to air traffic control centers.
The National Aeronautics and Space Administration and the National Oceanographic and Atmospheric Administration use the 6425-7250 MHz band for passive sensing of the Earth from space using microwave radiometers to obtain measurements of sea surface temperature which is a key component in weather forecasting and climatological studies. This band is used in conjunction with passive sensing bands around 10.6, 18.7, 23.8 and 36 GHz to obtain several important climatological parameters.
The NTIA does not issue information on the use of specific band segments in the 7/8 GHz band for fixed links, but the following information is available in a 2000 NTIA Report (NTIA Report 00-378) regarding government fixed service use in the 7125-8500 MHz range:
The FAA has 4,010 fixed assignments, including the radio communications link (RCL) system, a nationwide network used to connect air traffic controllers with communications and radar data from remote radar sites. The Air Force has 710 fixed assignments, used to support a large number of activities on numerous test and training ranges. The Navy has 800 fixed assignments, used mainly in voice and data links, ground forces communication, and land-line back up.
The Army has 450 fixed assignments, used for video scoring, closed circuit TV (security), point-to-point communications training, and for administrative traffic.
DOE has 1,200 fixed assignments used for system control and data acquisition (SCADA) for electric power distribution networks, perimeter security surveillance, laboratory telecommunication systems, and test site surveillance. Justice has 400 fixed assignments, used for fixed backbone nets used in law enforcement communications.
The Coast Guard has 160 fixed assignments, used to relay maritime radar and
communications needed for safety and navigation purposes in harbors and other critical locations. TVA has 140 fixed assignments, used for SCADA for electric power distribution systems.
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Frequency Bands |
| Band | Use | Service11 | Table |
| 7125 - 7145 MHz | NTIA Spectrum Use Summary | - | F |
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