Antenna Sketch

0212-EX-ML-2013 Images

Rockwell Collins, Inc.

2013-11-18ELS_143054

FEMA site at 9221 Ward Parkway, Kansas City, Missouri Antenna: 1942-RT, United States Antenna Products Frequency Range 2 MHz to 30 MHz Power handling capability 1 kW with 2 kW Peak Location Roof top installation Directional Antenna Is a directional antenna (other than radar) used? See antenna legend above. If yes, provide the following information: i. Width of beam in degrees at the half power point: N/A ii. Orientation in horizontal plane (degrees): N/A iii. Orientation in vertical plane (degrees): N/A Antenna Height Will the antenna extend more than six meters above the ground, or if mounted on an existing building, will it extend more than six meters above the building, or will the proposed antenna be mounted on an existing structure other than a building? Yes, existing building If yes, provide the following information: I Overall height above ground to tip of antenna (in meters): 6.1 meters (above building) ii Elevation of ground at antenna site above mean sea level is: 244 meters iii Distance to nearest aircraft landing area (in kilometers): 10.10 km iv List any natural formations of existing man-made structures (hills, trees, water tanks, towers, etc.) which, in the opinion of the applicant, would tend to shield the antenna from aircraft and thereby minimize the aeronautical hazard of the antenna. None

2.0 to 30.0 MHZ HF BROADBAND ANTENNAS The model 1942 compact, NVIS antenna is available in two separate models. Both models have an RF Power Handling Capacity of 1 kW CW / 2 kW PEP. The 1942-RT (Roof Top) is designed for a semi- permanent roof top installation. It’s small footprint (less than 50 ft. square) allowing mounting on most all flat roof commercial buildings. The antenna is designed to be mounted on existing roofs and does not require roof penetrations for installation. Both antennas have stainless steel elements and ground radials. Both have snap together aluminum mast sections that can be assembled on the ground and easily pivoted up to the erect position. Both systems utilize guy wires manufactured by Phillystran, Inc. using coated Kevlar® for maximum strength. These broadband terminated center-fed antennas require no tuning across the entire bandwidth, eliminating the need for antenna adjustment or an antenna tuner. The 1942 antenna achieves a VSWR of 2.5:1 or less over its entire range. A near vertical radiation pattern at frequencies below 10 MHz is ideal for reliable communications at 500 miles (800 km). Lower radiation angles above 10MHz allow for reliable communications over much greater distances.

1942—RT Antenna F 2.0 — 30.0 MHz Power handling capability 1000 Watts/2000 Watts PEPlaverage Polarization Horizontal Maximum VSWR 2.5:1 Input impedance 50 Ohms Input connector Type "N" Coaxial Cable Not Included Mast Height 20 ft. / 6.13 m Construction Aluminum Mast Stainless Steel Elements And Ground Radials Guy Wires Solid Polyurethane coated Keviar® coated guy wires Deployment Area 50 ft. square Net weight* 75lbs / 34kg Shipping weight 90 Ibs / 40.8kg Erection Time Varies by building, complete installation in less than one day.

Aerial view of FEMA site at 9221 Ward Parkway, Kansas City, Missouri US Antenna Products, Model 1942—RT


Document Created: 2019-03-22 19:38:17
Document Modified: 2019-03-22 19:38:17
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