Bird - The RF Experts

600 Watt, Oil-Cooled RF Termination

8401, RF Load 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 non-reflective termination for testing and adjusting transmitters under non-radiating 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 3 GHz.

  • Rugged portable Bench load for medium power base station RF testing up to 3 GHz
  • Oil-assisted convection cooling for safe, continuous operation up to 600W full rated power
  • Quick Change (QC) connectors to minimize the need for adaptors when making critical measurements
  • Low-profile housing with handle and rubber feet for trouble-free operation in the most demanding environments
product specifications:
Item No
Item Name
600 Watt, Oil-Cooled Terminations
Power Rating
600 W continuous
Frequency Range and VSWR
DC to 1 GHz @ 1.1 max.
1 Ghz to 2.8 GHz @ 1.2 max.
2.8 GHz to 3 @ 1.3 max.
Temperture Range
-40 to +45 °C
0.7 gal (2.65 liters) Refined Mineral Oil
Product Type
Operating Position
Horizontal Only
N (F)
Gray Powder Coat
16-13/16" x 8 1/2" x 5 15/16" (H x W x D)
427 x 216 x 151 mm
20 lbs. (9.1 kg)