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10 kW, Water-Cooled Econoload RF Terminations
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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.

  • 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

product specifications:

Item No

8730 Series

Item Name

10 kW, Water-Cooled Terminations

Power Rating

10 kW continuous

Frequency Range and VSWR

See Model Matrix


Distilled Water (< 1KHz)
Distilled or Potable Water (>1KHz)

Water Temperture Range

+5 to +60°C

Water Flow Rate

4 gals./minute @ 5 °C to 6 gpm @ 60 °C
15.2 liters/minute @ 5 °C to 22.8 lpm @ 60 °C

Product Type


Operating Position



1/2" FPT or 3/4" hose


See Model Matrix

Input Flange Diameter

See Model Matrix


Black Powder Coat


14-3/4" L x 2-3/4" Dia.
375 x 70 mm


7 lbs. approx.


Model 8738A is recommended for areas with water quality conditions

Model Selections

Model Freq. Range/VSWR Connectors Input Flange Weight/th>
8730A 1.1 max. DC to 1 GHz 1-5/8" EIA, Flanged 3-1/2" 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" EIA, Flanged 5-3/16" Dia. (132 mm) 6 lbs. 10 oz. (3 kg)
8738A 1.1 max. DC to 1 GHz 3-1/8" EIA, Unflanged (Flush) n/a 6 lbs. (2.8 kg)


Wall Mount Bracket

For more information,click here!


Declaration of Conformity