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Synergetics International

 

DATA SHEET

Model 18B Crossed Yagi Antenna

 

The Synergetics Model 18B is a high-gain, lightweight antenna designed to provide optimum performance for all fixed-location, timed Satellite Data Collection Platforms (DCPs). It is also well suited for other 400 MHz applications.

 

The basic 18B design consists of two quadrature-phased, five-element Yagi antennae, orthogonally mounted on a common aluminum boom. The driven elements are fed via a unique micro-strip matching circuit. The combination of a precision aluminum structure, driven by a photo-reproduced matching circuit, results in exceptionally uniform electrical and mechanical performance. The antenna is supplied with screw-in elements for ease of shipping, storage, and field installation.

 

SPECIFICATIONS

Electrical

bullet Frequency                                                             401.8 MHz                                             Nominal
bullet Bandwidth                                                             2 MHz                                                    Minimum
bulletInput Power                                                          15 Watts                                                Maximum
bulletInput impedance                                                  50 W                                                       Nominal
bulletSWR                                                                       1.50                                                         Maximum
bulletAxial Ratio                                                             4 dB                                                        Maximum
bullet Directivity                                                             +14.0 dBic                                              Nominal
bullet Gain                                                                        +11.0 dBic                                              Minimum
bullet Polarization                                                           Right-Hand Circular
bulletŊ Power Beamwidth                                            47ē                                                           Nominal
 
bullet Connector                                                             Type N Jack

Environmental

bullet Wind                                                                      100 knots
bulletIce and Snow                                                        100 lbs/ft2
bullet Rain                                                                        5”/hour
bullet Temperature                                                          -65ēC to +65ēC
bulletRelative Humidity                                                0 – 100%
 
bullet Altitude                                                                 -1,000 to +15,000 feet MSL
 

Mechanical

bullet Mounting                                                              2” standard pipe (2.50” od maximum)
bulletAzimuth adjustment                                            360ē
bulletElevation adjustment                                           0ē to 90ē
bullet Weight                                                                   4.5 lbs. Including adjustable mount
bulletSize (assembled)                                                   10.5” H x 10.5” W x 43.3” L
bullet Effective wind area                                              0.35 ft 2

Ordering Information

bullet Packaging                                                              Boxed in heavy-duty cartons.
bulletShipping weight                                                   7 lbs.
bulletShipping size                                                        5.5” H x 5.5” W x 45” L

 

                                                     SYNERGETICS INTERNATIONAL

600 Oak Avenue • Eaton, Colorado • 80615 • (970) 454-2291 • FAX (970) 454-3491

 

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Contact Information

Telephone
970-454-2291 Toll Free 800-227-1702
FAX
970-454-3491
Postal address
600 Oak Ave.Eaton Colorado 80615 USA
Electronic mail
General Information: sales@harshelectronics.com
Sales:sales@harshelectronics.com
Customer Support: techsupport@harshelectronics.com
Send mail to cburgess@harshelectronics.com with questions or comments about this web site.