Andrew - DB404

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Contents

Installation Instructions _ Bulletin 095022 000 Revision K September 2003 Page 1 of2 Broad Band Antennas Omni Elliptical DB404 ANDREW GENERAL INFORMATION _ The DB404 series is a heavy duty light weight antenna for use where an omni directional or an elliptical radiation pat tern is desired OPTIONAL RADIATION PATTERN _ One important feature of the DB404 series antenna is that it permits the user to adapt the antenna to changing coverage requirements When the dipole element pairs are spaced at 90 to each other an omni directional or circular pattern re sults When both sets of dipoles are in line collinear see the DB404L illustration in Figure 1 the antenna has a di rectional characteristic giving an elliptical pattern as shown ...