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RF Measurement
RF Equipment
About
Reliable RF load with integrated forced-air cooling
Oil-Cooled
Oil-Cooled
5 kW RF Load Series
The 8890-315 and 8890-320 Series RF Loads are high-power, oil-cooled terminations with integrated forced-air cooling for continuous 5 kW RF operation. Designed for non-radiating transmitter testing and system alignment, each unit uses a precision film resistor immersed in dielectric fluid and cooled by a built-in blower—available in 115 VAC (315) and 230 VAC (320) models.
With rugged construction and optional over-temperature protection, they’re ideal for long-duration, high-power testing in controlled environments.
Accessories
Compatible accessories to support installation, operation, and maintenance.
1 Gal. PMX-200
Silicone Oil Coolant
5-1070-2
RF Load Coolant is a low viscosity polydimethylsiloxane polymer with average kinematic viscosity of 20 cs.
5 Gal. PMX-200
Silicone Oil Coolant
5-1070-3
RF Load Coolant is a low viscosity polydimethylsiloxane polymer with average kinematic viscosity of 20 cs.
Thermoswitch Temperature Controller
8890-008
The 8890-008 Thermoswitch senses rising temperatures and cuts power before damage can occur. Designed with a responsive bimetallic mechanism, it delivers fast, reliable on/off control for oil-cooled RF loads.
Why RF Experts Choose Bird
For over 80 years, RF professionals have trusted Bird loads to deliver unmatched stability, low VSWR, and rugged reliability—whether on the bench or in the field. These aren’t just terminations—they’re peace of mind for your entire system.
