WISCO International (Decibel Products - Directionals DB 492-493-498)

DIRECTIONAL YAGI ANTENNAS 6, 8 OR 9 dB GAIN, 806-960 MHz
DB492 - DB493 - DB498

Light Duty - DB492 and DB493 are excellent for control or point-to-point communications, well suited for temporary or portable use.
Heavy Duty - DB498, for permanent installation, is gold anodized and has a radome cover for the radiator to prevent corrosion and ice build-up. It resists winds to 150 mph (241 km/hr).
Stacked Array - Two DB498 antennas increase gain to 12 dB.
All Metal - Components in the support boom and elements are made of high strength aluminum alloys; brackets and hardware of galvanized or stainless steel.
Easy Mount - A unique mounting arrangement facilitates rapid azimuth orientation.
No Field Tuning - Antennas are assembled and tested for minimum VSWR at the factory; pruning or adjusting is unneeded.
Lightning Resistant - Protection provided by direct ground.

Ordering Information - Use model number for correct frequency. Mounting clamps are included.
Example: DB492-A for 806-866 MHz.
NOTE: ASPJ-810 is now available with 10 dBd gain for 870-960 MHz.

Electrical Data
Frequency Ranges- MHz DB492-493 DB498	A= 806-866, K=920-960 A=806-866, C=824-896, K=896-960
Bandwidth-MHz VSWR Nominal impedance -ohms	Same as above 1.5 to 1 or less 50
Forward gain (over half -wave dipole)- dB DB492 DB493 DB498	8 6 9
Polarization Maximum power input -watts	Vertical 100
Lighting protection	Direct ground
Standard Termination	Captive Type N-Female

Mechanical Data
Support boom Elements	Aluminum Aluminum
Dimensions (HxL) - in.(mm) DB492 DB493 DB498	7.5 (190.5) x 25.5 (647.7) 7.5 (190.5) x 13 (330.2) 7.5 (190.5) x 25.5 (647.7)
Shipping weight - lbs. (kg) DB492 6 (2.72) DB493 3 (1.36) DB498 8 (3.63)	Net weight - lbs. (kg) 3.5 (1.59) .7 (.32) 5 (2.27)
Mounting brackets	Galvanized steel