Model #20-4

Antenna (NSN 5985-00-419-5177)

Special Features
Helicoils for two 8-32 headless set screws for breaking bond w/aircraft
Description

10.875 inches nominal overall length.

Overall Height
1.417 feet
Overall Width
2.780 inches
Mounting Hole Diameter
0.257 inches
Mounting Hole Quantity
12
Frequency Rating
116.000 megahertz single antenna element and 156.000 megahertz single antenna element
Distance Between Mounting Facility Centers
1.280 inches and 1.640 inches and 1.560 inches and 1.840 inches and 3.000 inches and 1.000 inches and 2.000 inches and 3.000 inches and 0.860 inches
Operating Tempurature Range
-62.0/+71.0 degrees celsius
Coaxial Connector Series Designation
C single antenna element
Connector End Design
Socket single antenna element
Electromagnetic Polarization Type
Vertical single antenna element and horizontal single antenna element
Radiation Pattern
Omnidirectional single antenna element
Characteristic Impedance In Ohms
50.0 single antenna element
Beam Scanning Method
Rotating single antenna element
Positioning Device Type
Drive motor single antenna element
Voltage Rating In Volts
115.0 ac single antenna element and 25.0 dc single antenna element
Design Type
Blade single antenna element
Mounting Method
Bracket
Terminal Type
Connector, receptacle single antenna element
Beam Width Angle
30.0 degrees horizontal single antenna element and 30.0 degrees vertical single antenna element
Power Gain In Decibels
0.80 single antenna element
Test Data Document
85226-dc-50-1 drawing (this is the basic governing drawing, such as a contractor drawing, original equipment manufacturer drawing, etc.; excludes any specification, standard or other document that may be referenced in a basic governing drawing)
Description
Antenna
Cage Code
63563

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Updated: 11/23/2024