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It extends from frequencies below 1 Hz up to around 3000 GHz or 3 THz, where it gives way to the infrared spectrum.
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The radio spectrum is divided into many different bands. This means that if the frequency range of interest is in the 150-250 Hz range, the sampling rate must be at least 500 Hz. 0000009357 00000 n
Frequencies: 12.5 GHz/wideband 21GHz/22GHz/31GHz (WVR) Hardware: Interferometer, Water Vapor Radiometer Data Collected: Atmospheric Phase Stability Atmospheric Attenuation Brightness Temperature Click for more info
The radio spectrum is a subset of the electromagnetic spectrum. The primary use of this data has been in system planning for NASA’s communications assets in deep space and near earth availability determination and ground station design. 0000003806 00000 n
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Portal to NASA's past and current activities in RF propagation measurement campaigns.For over 20 years, the National Aeronautics and Space Administration (NASA) has been involved in the statistical characterization of radiofrequency (RF) propagation through the atmosphere at locations around the world. 0000014549 00000 n
NASA HF Net 5403.5 KHz USB NASA HF Net 5821.0 KHz USB NASA HF Net 5961.0 KHz USB NASA HF Net 6106.0 KHz USB NASA HF Net 6108.0 KHz USB NASA HF Net 6809.0 USB 0000002610 00000 n
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Frequencies Worldwide downlink for voice 145.80 Worldwide packet uplink/downlink 145.825 Region 1 voice uplink 145.20 Region 2 and 3 voice uplink 144.49 Worldwide uplink for …
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Controls on the front of the receiver change reception …
Different frequencies have different uses because of different propagation, generation and general properties. 0000004328 00000 n
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UHF Frequencies 243.000 Emergency only (AM) 259.700 Air-to-Ground voice downlink (AM) (Primary)
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NASA HF Net 3388.0 KHz USB NASA HF Net 5403.5 KHz USB NASA HF Net 5821.0 KHz USB NASA HF Net 5961.0 KHz USB NASA HF Net 6106.0 KHz USB NASA … For those new to single side band reception the unit comes complete with everything needed to 'get on the air' including a comprehensive instruction manual which includes a list of useful marine frequencies. 0000005336 00000 n
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NASA Ames Research Center Amateur Radio Club NA6MF http://hamradio.arc.nasa.gov Simplex Net: 146.445 MHz Repeater: 145.250 MHz, minus offset, tone 123.0 Special Events including NASA-TV audio 146.490 MHz
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