A device for adjusting the orientation of an antenna for an earth station. A received signal from the antenna is delivered from an outdoor unit to a demodulator of an indoor unit to be demodulated thereby. In the indoor unit, a converter receives an automatic gain controlled voltage signal from the demodulator...http://www.google.de/patents/US4881081?utm_source=gb-gplus-sharePatent US4881081 - Antenna orientation adjusting device for earth station
