9 radio communications equipment for aeronautical application systems comprised of VHF transmitters and receivers for air traffic control, HF transmitters and receivers for air traffic control; radio navigation equipment comprised of VHF omnidirectional range distance measuring equipment for air traffic control use; radar equipment comprised of weather radar, secondary radar (ATC), military airborne radar; television equipment comprised of satellite dishes; digital receivers for satellite television; VHF transmitters; cable television head-ends; cable television converters, low noise amplifiers, antennas