WISCO International (Decibel Products / Fiberglass

Featuring high gain and broad bandwidth, the DB640 has its radiators enclosed in a Horizon Blue^TM radome made of strong, lightweight Aeroglas® fiberglass, a Decibel exclusive for antennas. Aeroglas is also used for helicopter blades, Olympic vaulters' poles and racing sailboat masts.

Broad Response - 20 to 32 MHz bandwidths fulfill frequency needs for UHF conventional paging and radiotelephone systems.
High Gain - 10 dBd for excellent coverage.
Sturdy Construction - In addition to the strong radome, the antenna has a 3.25" (82.6 mm) OD weather resistant, gold iridited support pipe made of 6061-T6 aluminum alloy.
Engineered to Last - All metals used in radiator, feed and matching systems are copper or brass, which minimizes galvanic reaction and intermodulation.
Lightning Resistant - A DC ground is provided.
Moisture Resistant - The bottom cap has a moisture-sealed bulkhead N-female connector, and a drain plug at the top and bottom provides drainage in upright or inverted positions.
Ready to Install - DB5087 No-Torsion Mount and Vapor-Wrap® are provided for easy installation.
Ordering Information
Use model number for correct frequency. Clamps are included. Outrigger model 550045-616 10' (3048 mm) is optional. Order jumper cable separately, if desired.

Electrical Data
Frequency Range - MHz	See table
Bandwidth - MHz Gain - dB	See table 10
Beamwidth "E" Plane (half power) Beamwidth "H" Plane (half power)	6° Omni
Maximum power input - watts VSWR Lightning protection	500 1.5 to 1 or better Direct ground
Termination	Type N-Female (fixed)

Mechanical Data
Lateral thrust at 100 mph (161 km/hr) - lbf (N)	110 (489.3)
Overall length - ft. (m) Radome length - ft. (m) Mounting pipe length - in. (mm)	18.9 (5.8) 16.7 (5.09) 26 (660.4)
Maximum exposed area (flat plate equivalent) - ft² (m²)	2.75 (.225)
Rated wind velocity - mph (kph)	160 (257)
Radome Radiators Support pipe	Aeroglas® Fiberglass Brass 6061-T6 Aluminum
Net weight - lbs. (kg) Shipping weight (w/ mount) - lbs. (kg)*	35 (15.9) 47 (21.3)
Mount	DB5087 No-Torsion

Frequency Ranges Available
DB640-A	404-436 MHz
DB640-B	425-455 MHz
DB640-C	450-482 MHz
DB640-D	480-512 MHz