Bird - The RF Experts

250 Watt, Oil-Cooled RF Termination

8141, 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 2.5 GHz.

  • Rugged portable Bench load for medium power base station RF testing up to 2.5 GHz
  • Oil-assisted convection cooling for safe, continuous operation up to 250W 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
250 Watt, Oil-Cooled Terminations
Power Rating
250 W continuous
Frequency Range and VSWR
DC to 1 GHz @ 1.10 max.
1 GHz to 1.8 GHz @ 1.2 max.
1.8 to 2.5 GHz @ 1.3 max.
Temperture Range
-40 to +45 °C
0.35 gal. (1.3 liters) Silicone Oil
Product Type
Operating Position
Horizontal Only
Gray Powder Coat
9.6 in x 4 in x 6.5 in (243 mm x 102 mm x 164 mm)
10 lb (4.5 kg)