Product Information
8890-300 Series, RF Loads are self-contained high-power 50 ohm coaxial transmission line terminations 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.
- Oil-assisted (vented) convection cooling for safe, continuous operation up to 2500W full rated power.
- Compatible with all Bird QC connectors.
- Overload thermoswitch P/N 8890-008 is optional. Free assembly when ordered as a package.
product specifications:
Item No
8890-300 Series
Item Name
2.5 kW, Oil-Cooled Terminations
Power Rating
2500 W continuous
Frequency Range and VSWR
DC – 1 GHz @ 1.1 max.
1 GHz – 2 GHz @ 1.25 max.
2 GHz – 2.4 GHz @ 1.3 max.
Impedance Ω
50
Coolant
2.9 gal. (11 liters) Silicone Oil
Product Type
Oil-Cooled
Operating Position
Horizontal Only
Connectors
See Model Matrix
Finish
Gray Powder Coat
Dimensions
See Model Matrix
Weight
See Model Matrix
Model Selections
| Model | Connector | Recess (In.) | Diminsions, L x W x H | Weight |
|---|---|---|---|---|
| 8890-300 | LC, Female | n/a | 23-1/8" x 7" x 17-3/16" (587 x 178 x 437 mm) |
57 lbs. (26 kg) |
| 8891-300 | 3-1/8" EIA, Flanged | 0.922 | 25-1/8" x 7" x 17-3/16" (638 x 178 x 437 mm) |
59 lbs. (27 kg) |
| 8891D-300 | 3-1/8" EIA, Flanged | 0.922 | 25-1/8" x 7" x 17-3/16" (638 x 178 x 437 mm) |
59 lbs. (27 kg) |
| 8892-300 | 1-5/8" EIA, Flanged | 0.625 | 23-1/8" x 7" x 17-3/16" (587 x 178 x 437 mm) |
58 lbs. (26 kg) |
| 8892D300 | 1-5/8" EIA, Flanged | 0.625 | 23-1/8" x 7" x 17-3/16" (587 x 178 x 437 mm) |
58 lbs. (26 kg) |
| 8895-300 | 1-5/8" EIA, Unflanged | 0.438 | 22-3/16" x 7" x 17-3/16" (564 x 178 x 437 mm) |
58 lbs. (26 kg) |