2500W, Oil-Cooled Dry RF Terminations
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.
Features
- 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.
Model Selections
| Model |
Connector |
Recess (In.) |
Dimensions, 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) |
| 8891D300 |
Digital, 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 |
Digital, 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) |