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8730 Series, 10 kW, Water-Cooled Terminations This series of water-cooled load resistors 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 8730 Series, Terminations Model Freq. Range/VSWR Connectors Input Flange Weight 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) 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 Coolant 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 Water-Cooled Operating Position Any Waterlines 1/2" FPT or 3/4" hose Connectors See Model Matrix Input Flange Diameter See Model Matrix Finish Black Powder Coat Dimensions 14-3/4" L x 2-3/4" Dia. 375 x 70 mm Weight 7 lbs. approx. Note Model 8738A is recommended for areas with water quality conditions
8730 Series, 10 kW, Water-Cooled Terminations This series of water-cooled load resistors 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.
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