8730 Series – 10 kW, Water-Cooled Econoload RF Terminations
10 kW, Water-Cooled Econoload RF Terminations
8730 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 4 gallons (15.2 liters) per minute
Model Selections
| Model | Freq. Range/VSWR | Connectors | Input Flange | Weight |
|---|---|---|---|---|
| 8730A | 1.1 max. DC to 1 GHz | 1 5/8 in EIA, Flanged | 3.5 in Dia. (89 mm) | 7 lbs. 14 oz. (3.6 kg) |
| 8731 | 1.1 max. 1 KHz to 1 GHz (DC for continuity checks) | 3 1/8 in EIA, Flanged | 5.2 in Dia. (132 mm) | 6 lbs. 10 oz. (3 kg) |
| 8738A | 1.1 max. DC to 1 GHz | 3 1/8 in EIA, Unflanged (Flush) | n/a | 6 lbs. (2.8 kg) |
| Product | Description |
|---|---|
| Item No | 8730 Series |
| Item Name | 10 kW, Water-Cooled Terminations |
| Power Rating | 10 kW continuous |
| Frequency Range and VSWR | See Model Matrix |
| Coolant | Distilled Water (< 1 kHz) Distilled or Potable Water (>1kHz) |
| Water Temperature Range | +5° to +60°C |
| Water Flow Rate | 4 gal./minute @ 5°C to 6 gpm @ 60°C (15.2 liters/minute @ 5°C to 22.8 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 | See Model Matrix |
| Finish | Black Powder Coat |
| Dimensions | 14-3/4 in L x 2-3/4 in dia (375 mm x 70 mm) |
| Weight | 7 lb approx. |
| Note | Model 8738A is recommended for areas with water quality conditions |
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