8770 Series – 50kW Water-Cooled RF Terminations
50 kW, Water-Cooled RF Terminations
8770 Series, RF Loads are designed as compact, low VSWR and non-radiating terminations for high-power transmitter/transmission line systems. The units generate almost no ambient heat, making installation space minimal and convenient, in any position. The RF power is converted to heat in the hollow resistive film load resistor and directly absorbed by the water flowing through it.
Features
- Broadband water-cooled load for long-term RF dissipation when heat must be efficiently transferred away from the area
- Small size may be carried easily, used in any position and installed anywhere there is a source of potable water
- Requires flow rate of up to 11 gallons (41.8 liters) per minute
Model Selections
| Model | Connector |
|---|---|
| 8775 | 3-1/8″ EIA, Flanged |
| 8776 | 3-1/8″ EIA, Unflanged (Flush) |
| Product | Description |
|---|---|
| Item No | 8770 Series |
| Item Name | 50 kW, Water-Cooled Terminations |
| Power Rating | 50 kW continuous |
| Frequency Range and VSWR | 1 kHz - 900 MHz @ ≤ 1.10 max (DC for continuity checks) |
| Coolant | Potable Water |
| Water Temperature Range | +5° to +45°C |
| Water Flow Rate | 9 gal/minute @ 5°C to 11 gpm @ 60°C (34.2 liters/minute @ 5°C to 41.8 lpm @ 60°C) |
| Product Type | Water-Cooled |
| Operating Position | Any |
| Waterlines | 1/2 in FPT or 3/4 in hose |
| Connectors | See Model Matrix |
| Input Flange Diameter | 5.2 in dia (132 mm) |
| Finish | Black Powder Coat |
| Dimensions | 19.5 in L x 3.5 in dia (495 mm x 90 mm) |
| Weight | 15 lbs 13 oz (7.2 kg) |
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