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Apollo 15 Lunar Module and Lunar Roving Vehicle, August 1, 1971.The S-band dish antenna for the rover is visible. The Unified S-band (USB) system is a tracking and communication system developed for the Apollo program by NASA and the Jet Propulsion Laboratory (JPL).
The most common antennas are stainless steel wire or rod whips which protrude vertically from the vehicle. Physics defines the antenna length: length relates to frequency and cannot be arbitrarily lengthened or shortened (more likely) by the end user. The standard "quarter wave" antenna in the 25-50 MHz range can be over nine feet long.
A Universal LNB has a switchable local oscillator frequency of 9.75/10.60 GHz to provide two modes of operation: low band reception (10.70–11.70 GHz) and high band reception (11.70–12.75 GHz). The local oscillator frequency is switched in response to a 22 kHz signal superimposed on the supply voltage from the connected receiver.
The vehicle is a heavily modified Chevrolet Suburban equipped with protective armor, runflat tires, vehicle transponder, and turbocharger. The most obvious feature is a configurable antennae platform mounted on the roof. This contains a large SATCOM dome containing a tracking dish that serves as the data uplink and downlink as the primary ...
External video camera is mounted on the forward pylon located just behind the front top hatch. Could also house the antenna. All pylons are hardened and armored. Can operate in water and will remain sealed when fully submerged. Can float while half full of water. [5] While the film is fiction, the Landmaster vehicle is real.
The basic dash cam is designed to capture video from directly in front of a vehicle through the windshield. Increasingly, more advanced dash cams have two cameras–one to capture the road ahead ...