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8650B Series
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8650B Series

8650B Series, 50 kW, Forced-Air Cooled RF Terminations are compact high-power 50-ohm terminations efficiently dissipate up to 50 kW of RF over a wide frequency range up to 900 MHz.

  • Available Voltage Options (add suffix to model number)
    • 115V @ 60 Hz (-115)
    • 230V @ 50 Hz (-230)
    • 230V @ 60 Hz (-230-6)
  • Interlock control circuit provides fail-safe protection of the transmitter and load resistor in the event of an ac power failure to the blower or coolant pump
  • Compact, low-profile design saves space in crowded transmitter sites
8650B Series, Terminations
Model Connector
8655B 3-1/8" EIA, Flanged
8656B 3-1/8" EIA, Unflanged (Flush)

 

8640A930-1, Load Protection Switch provides an added layer of safety for the water-cooled Moduloads by preventing RF power from reaching it before proper coolant flow has been established. This device protects the Moduloads from damage that can result in costly downtime. Only Available for 8645B, 3-1/8" Flanged Units

product specifications:
Item No
8650B Series
Item Name
50 kW, Forced-Air Cooled Terminations
Power Rating
50 kW continuous
Frequency Range and VSWR
1.1 max. 1 kHz - 900 MHz (DC for continuity checks)
Temperture Range
Per Power Level and Coolant Mix:
>=40 kW: (100% Water) +5 to +30 °C; <40 kW: (100% Water) +5 to +45 °C
>=40 kW: (35% Ethylene Glycol/65% Water) -20 to +25 °C
<40 kW: (35% Ethylene Glycol/65% Water) -20 to +35 °C
Coolant
17 qts. (16.1 liters) 100% water
or 65% water/35% industrial Ethylene Glycol. With forced-air cooling
Product Type
Forced-Air Cooled
Operating Position
Horizontal Only
Connectors
See Model Matrix
Finish
Gray Powder Coat
Dimensions
50-1/2" x 19-5/32" x 19-9/16" (L x W x D)
659 x 487 x 497 mm
Weight
275 lbs. (125 kg)
Power
115 V models: 14 A nominal @ 115V ± 10% 60Hz
230 V models: 7 A nominal @ 230V ± 10% 50Hz
compatible devices:
8640A930-1
3-1/8” Flanged Load Protection Switch
5-1134-3
Ethylene Glycol, Industrial Grade