8920 Series – 5 kW, Oil-Cooled RF Terminations
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 includes Models 8922D, 8926D and 8927D for Digital Broadcast (VSWR = 1.065 max., 470-860 MHz)
Model Selections
| Model | Connector | Dimensions, L x W x H | Weight |
|---|---|---|---|
| 8921 | QC-LC(F) | 32.8 in x 9.5 in x 26.9 in (832 mm x 241 mm x 681 mm) |
119 lbs. (54 kg) |
| 8922 | 1 5/8 in EIA, Flanged | 32.8 in x 9.5 in x 26.9 in (832 mm x 241 mm x 681 mm) |
119 lbs. (54 kg) |
| 8922D | 1 5/8 in EIA, Flanged | 32.8 in x 9.5 in x 26.9 in (832 mm x 241 mm x 681 mm) |
119 lbs. (54 kg) |
| 8926 | 3 1/8 in EIA, Flanged | 32.8 in x 9.5 in x 26.9 in (832 mm x 241 mm x 681 mm) |
119 lbs. (54 kg) |
| 8926D | 3 1/8 in EIA, Flanged | 32.8 in x 9.5 in x 26.9 in (832 mm x 241 mm x 681 mm) |
119 lbs. (54 kg) |
| 8927 | 3 1/8 in EIA, Unflanged | 32.8 in x 9.5 in x 26.9 in (832 mm x 241 mm x 681 mm) |
119 lbs. (54 kg) |
| 8927D | 3 1/8 in EIA, Unflanged | 32.8 in x 9.5 in x 26.9 in (832 mm x 241 mm x 681 mm) |
119 lbs. (54 kg) |
| Product | Description |
|---|---|
| Item No | 8920 Series |
| Item Name | 5 kW, Oil-Cooled Terminations |
| Power Rating | 5000 W continuous |
| Frequency Range and VSWR | DC - 1 GHz @ ≤ 1.10 max. 1.065 max., 470-860 MHz for "D" Models |
| Temperature 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 | 12 lb (5.7 kg) |
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