TM 11-5985-335-15
1-5.
Tabulated Data
The tabulated data of Antenna AS-1425/GRC is given below:
Type
........................................................ Parabolic reflector with horn feed.
Operating frequency ................................... 4.4 to 5.0 GHz.
Polarization (E-plane) ................................. Vertical or horizontal (manually selectable at time of installation).
Gain (nominal over 4.4 to
5.0 GHz range ............................................. 33 db minimum.
Beam width (at 3-db points):
Horizontal polarization ........................... 3.50.5 in the vertical plane.
3.50.5in the horizontal plane.
Vertical polarization .............................. 3.50.5in the vertical plane.
3.50.5in the horizontal plane.
Weight ........................................................ 65 pounds, including backmount and deicer equipment.
Deicer equipment ........................................ Remotely controlled electric heater mounted on feedhorn assembly.
1-5.1.
Differences Between Configurations
Earlier antennas have an antenna adapter and a clamping arrangement to facilitate mounting the antenna on a mast.
Newer antennas and field replacements of old antennas will have a quick-release pin holding antenna to mast.
Illustrations and descriptive paragraphs in this manual reflect both configurations. Older antennas, with a serial number
without a suffix, are configuration A. Newer antennas, configuration B, will have a serial number with a "C" suffix.
Illustrations and descriptions in the text that pertain to only one or the other configuration are marked (A) or (B) to denote
the applicable configuration. Illustrations and descriptions not so marked pertain to all antennas.
1-6.
Components of Antenna AS-1425/GRC
a. For a current listing of components of Antenna AS-1425/GRC, refer to the basic issue items list (appx B). The
chart below lists the major items of equipment comprising the AS-1425/GRC.
Change 2
10.1
Previous Page
