Bird Electronics 8251
RF Load, 1 kW, DC - 2500 MHz

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Product Overview

The Bird 8251 TERMALINE ® Load Resistor is a portable, self-contained general purpose 50 ohm coaxial transmission line termination requiring no outside power source or additional equipment. It provides accurate, dependable, and practically nonreflective termination for testing and adjusting transmitters under nonradiating conditions. The load consists essentially of a cylindrical film type resistor immersed in a dielectric coolant. The resistor, individually selected for its accuracy, is enclosed in a special tapered housing which provides a linear reduction in surge impedance directly proportional to the distance along the resistor. This produces the uniform, practically reflectionless line termination from dc to 2.4 GHz.

Specifications of the Bird 8251 Load include:

• Rugged portable Bench load for high power base station RF testing up to 2.4 GHz.
• Oil-assisted convection cooling for safe, continuous operation up to 1000W full rated power.
• Shipped with LC or Type N connector installed.
• Low-profile housing with handle and rubber feet for trouble-free operation in the most demanding environments.
• Ambient Temperature Range: -40°C to +45°C
• Connector: QC type (Female LC normally supplied, and Female N normally supplied unmounted)
• Finish: Gray powder coat
• Frequency Range and VSWR: DC to 1 GHz at 1.1 max, 1 GHz to 2 GHz at 1.25 max., 2 GHz to 2.4 at 1.3 max.
• Load Coolant: 1.1 gal. (4.1 liters) silcon oil
• Nominal Size: 17 29/32" L x 8 1/2" H x 5 15/16" W, (455 mm x 216 mm x 151 mm)
• Operating Position: Horizontal only
• Power Rating: 1000 W continuous
• Weight: 25 lbs, 8 oz. (11.5 kg)