Bird - The RF Experts
8920 Series
8920 Series, 5 kW Oil-Cooled RF Terminations
8920 Series

5 kW, Oil-Cooled RF Terminations


8920 Series, RF Loads are self-contained high-power 50 ohm coaxial transmission line terminations requiring no outside power source or additional equipment. The units provide accurate, dependable, and practically non-reflective termination for testing and adjusting transmitters under non-radiating conditions. The loads consist 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 1 GHz.

Features
  • An 8890-008 over-temperature interlock safety switch is optional
  • This series has includes Models 8922D, 8926D and 8927D for Digital Broadcast (VSWR = 1.056 max., 470-860 MHz)
Model Selections
Model Connector Diminsions, L x W x H Weight
8921 QC, LC (F) 30-27/32" x 9-1/2" x 25-13/16"
(783 x 241 x 656 mm)
119 lbs. (54 kg)
8922 1-5/8" EIA, Flanged 30-27/32" x 9-1/2" x 25-13/16"
(783 x 241 x 656 mm)
121 lbs. (55 kg)
8922D 1-5/8" EIA, Flanged 30-27/32" x 9-1/2" x 25-13/16"
(783 x 241 x 656 mm)
121 lbs. (55 kg)
8926 3-1/8" EIA, Flanged 32-3/4" x 9-1/2" x 25-13/16"
(832 x 241 x 656 mm)
126 lbs. (57 kg)
8926D 3-1/8" EIA, Flanged 32-3/4" x 9-1/2" x 25-13/16"
(832 x 241 x 656 mm)
126 lbs. (57 kg)
8927 3-1/8" EIA, Unflanged 32-3/4" x 9-1/2" x 25-13/16"
(832 x 241 x 656 mm)
126 lbs. (57 kg)
8927D 3-1/8" EIA, Unflanged 31-7/8" x 9-1/2" x 25-13/16"
(809 x 241 x 656 mm)
126 lbs. (57 kg)
product specifications:
Item No
8920 Series
Item Name
5 kW, Oil-Cooled Terminations
Power Rating
5000 W continuous
Frequency Range and VSWR
DC - 1 GHz @ 1.1 max.
1.065 max., 470-860 MHz for "D" Models
Temperture Range
-40 to +45 °C
Product Type
Oil-Cooled
Operating Position
Horizontal Only
Connectors
See Model Matrix
Finish
Gray Powder Coat
Dimensions
See Model Matrix
Weight
126 lbs. (57 kg)