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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Dual range linear measurement device accurately measures RF phase differences in either VHF or UHF ranges. The device has a capability consisting of a course range extending to 30 cm readable to 1 mm and any fine range portion of 2.5 cm readable to .01 mm.
VHF-UHF Faraday rotation experiment with Gemini IX spacecraft
Active VHF translation repeater onboard ATS-1 FOR aircraft communication systems
Solar flare and sunspot effects on VHF communications between synchronous satellite relay and ground stations
VHF ranging and position fixing of mobile terminals using ATS satellites
VHF quadraloop antenna breakdown in Nike-Cajun rocket due to outgassing
Ionospheric effects on propagation of VHF telemetry signals from satellites
HF and VHF communications circuits for Earth orbiting spacecraft and ground stations
Polarimeter for determining ionospheric electron content by measuring Faraday rotation of polarized VHF transmission from Syncom satellites
Solar phenomena effect on VHF communications between synchronous satellite relay and earth ground stations
Airplane navigation based on VHF ranging between aircraft and geostationary satellite, examining errors by unknown propagation characteristics of signal in ionosphere
Correlation distance of VHF fading from irregularities in equatorial ionosphere, using NASA STADAN in Chile
Reentry plasma effects on RAM C-1 VHF telemetry antenna radiation patterns
VHF and X band telemetry attenuation by plasma sheath around hypersonic reentry vehicles
Tropospheric and ionospheric absorption at VHF for North Atlantic aeronautical satellite system
Scintillation, polarization, and multipath effects on VHF propagation between synchronous satellites and aircraft - telecommunication systems
VHF radar measurements of scattering by field aligned irregularities associated with equatorial spread F
High Q micropower filters for VHF applications based on conditionally stable negative resistance operation, describing computer-aided design, construction and performance