Antenna Authority, Inc
Phone (770) 577-7969
E-Mail

 

 

 


Provides 4 cardioid patterns in the cardinal directions utilizing appropriate AAI modulator

PRODUCT SPECIFICATION
Product Code --- DASA-3151 DF ANTENNA
Downloadable PDF file


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Bottom View

An Accurate Compact Antenna for Mobile Operations

The DASA-3151 Mobile DF Antenna is a 2 band VHF/UHF antenna consisting of annular slot elements recessed in the roof of a vehicle or on the underside of an aircraft. It includes the modulator, controller and coax cables. The antenna is designed to generate accurate and repeatable bearings on vertically polarized signals in the 20 MHz to 1000 MHz frequency range with extended coverage down to 1 MHz.

The DASA-3151 can be mounted above the headliner in a vehicle or remoted to most any flat area. It is primarily designed for use in a 4 door F-150, Tahoe or similar vehicle. All power and control signals to the antenna are provided through a single control cable via the DF processor. The received signal, with bearing information encoded, is routed to the receiver through RF coaxial cable. Control signals are compatible with the AADF-3100 DF Processor from Antenna Authority, Inc.

Corner detail

Installed in roof

 



Completed installation


Electrical Specifications

Frequency Coverage:                             

20 MHz to 1 GHz

Azimuths Coverage:                              

360 in azimuth

Calibration                                            

Manually set depending on receiver and
antenna location

DF Technique:                                      

Watson-Watt single frequency

Antenna:                                              

 4-element dual annular slot, multiple bays

Bearing Accuracy:                                

 6 rms

Power:                                                 

Voltage: 11.5 - 14.5 VDC

                                                           

Current 0.3 amps

Polarization:                                         

Vertical

Impedance:                                               

50 ohms nominal

Bands                                                  

2

Connectors                                           

BNC, DB-9 

Mechanical Specifications

Dimensions:

Width: 24"  -  Length: 32"

 

Height: 2",  Weight: 10 lbs

Environments:

Operating: -40C to +60C

 

Storage: -40C to +70C   Humidity: 95%

Material:

Terne Metal, FR-4, Foam

 Typical Gain and Pattern of Annular Slot Antenna

Ordering Information

Antenna          Model No.      DASA-3151 complete with modulator and cables                

DF Processor required        Model No. AADF-3101

One year warranty on parts and labor

Specifications subject to change without notice

Printed in U.S.A. Copyright 1/22/2009

Downloadable PDF file

If you have a need for optimized frequency coverage not indicated here, please contact Ferrel  - info below - we can customize to your needs.


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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