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$' 6123302462 <br />Teleport MN Eng <br />Cr 6124829607 TELEPORT_MN__ <br />03/31/95 14:20 <br />P03 <br />03-'30/95 20;06 P01 <br />Models 920CS and 920KS <br />,•, Radiation Systems, Inc. <br />airr <br />SatCorn Technologies Division <br />9.2 -Meter Satellite Earth Station Antenna <br />Features <br />• Qualified for 26 tteteliite spacing <br />Meets FCC requirements for video uplinks <br />• Complete arc coverage in less than one minute with high speed <br />motorized option <br />• Programmable control system <br />• Protection and maintenance or L htA's afforded by extra large <br />hub <br />• Stiff, rugged mount for accurate panting <br />Description <br />The Model 920CS (C -Band) and 920KS (Ku -Eland) antennas are <br />designed for high performance video, message end data com- <br />munications. These antennas meet the new FCC requirements for <br />2° satellke spacing. <br />Superior RF performanoe fs achieved tttrocugh the use of preci- <br />Aoc uShape 0' reflector penis and dual Cassegrsin <br />. Both C -Band and Ku -Band feeds employ corrugated horns <br />to encs high cross-potar'vatlon isolation ie ie(& The Ku -band <br />feed includes a blower that forces air across the feed window to <br />prevent 0* accumulation of moisture. <br />Twenty -tour high strength aluminum panels provide the dura- <br />bility needed to withstand rough handling and a wide range of <br />environmental conditions. The panels are mounted to radial <br />members which attach to a central hub. The hub also provides a <br />weathertight enclosure for protection of km noise amplifiers. <br />The hot -dipped galvanized steel mount employs a straiptftt- <br />forward elevation-over-aamuth geometry to allow easy pointing <br />to any visible sated/e within the orbital arc. A margin of safety hes <br />bean built into the design to ensure antenna support under <br />adverse environmental conditions. The mount's stiff, rugged con- <br />struction provides the pointing accuracy needed for proper oper- <br />ation under wind loading. <br />With the optional motorized drives, the antenna can be rapidly <br />repositioned to different satellites In a continuous 110° azimuth <br />arc. Several drive speed options are available. <br />The optional Series 4000 microprocessor -based programma- <br />ble control system is capable of positioning the antenna to within <br />.026 accuracy. In** manual mode, tt allows en pperator to run <br />each axis while monitoring the position on a video terminal. In the <br />automatic mode, it can store up t0 40 satellite positions and auto- <br />matically direct the antenna to any position according to a pre- <br />programmed are racs <br />and tor ort:Ming dt schedule. <br />hsati�e <br />()POMO <br />• Motorimd drives with programmable 3 -axis e (elevation, azimuth, <br />polarization) controller. <br />s <br />1130' azimuth travel In two 90• sectors. <br />° 145: azimuth travel in overlapping 110° and 90° sectors. <br />• Deicing systems. <br />• Feeds with the foaming polarizations: <br />Receive Only Receive/Transrr t <br />Single linear Orthtogonel linear <br />Dust linear Circular <br />Dual circular Coplanar linear <br />3 -port Meal frequency reuse <br />4 -port frequency reuse <br />(linear or circular) <br />• Work platform and ladder <br />