Antenna Authority, Inc
Phone (770) 577-7969




Product Code --- DASA-3131 Fixed Site DF Antenna

The antenna should be affixed on a mast - normally atop a building or a pole. The controls are mounted close by, ideally in an elevator shaft or somewhere secure, dry and close to the antenna.  The antenna is a dual band annular slot type enclosed in a vacuum ­formed, ruggedized, and lightweight abrasive resistant plastic cover with UV protection. The antenna is intended to be mounted on a 1.5” metal pipe (2’ aluminum section provided).

This antenna is usually a part of the AADF-3131 Fixed Site DF System, but is available separately as well. 

Electrical Specifications

Frequency Coverage: 20 MHz - 1.0 GHz      
Azimuth Coverage:    360° in azimuth

DF Technique:     Watson-Watt Phase           
Antenna Type:  Dual Annular Slot

Bearing Accuracy:     6° rms
Polarization:      Vertical

Mechanical Specifications

Antenna Dimensions:

Diameter  24", Height: 5",
Weight: 35 lbs


Operating Temp.: -40°C to +60°C,
Storage Temp.: -40°C to +70°C

Ordering Information    Model No. DASA-3131
Printed in U.S.A. Copyright 9/1/2010
Specifications subject to change without notice

Antenna Authority offers a wide assortment of directional, wideband antennas and other equipment used for radio direction finding and Geo location. We are experts in covert antennas, vehicles and their operation. We are also ready to design new products to meet your specific needs.

Antenna Authority, Inc.                Ferrel Bentley - E-Mail
3381 W. County Line Road
Douglasville, Ga. 30135-1145
(770) 577-7969
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