Product Information
8640B Series, RF Loads are compact high-power 50-ohm loads that efficiently dissipate up to 25 kW of RF over a wide frequency range up to 1 GHz.
- 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.
- Available Voltage Options (add suffix to model number).
- 115V @ 60 Hz (-115)
- 230V @ 50 Hz (-230)
- 230V @ 60 Hz (-230-6)
product specifications:
Item No
8640B Series
Item Name
25 kW, Forced-Air Cooled Terminations
Power Rating
25 kW continuous
** See note 2 above
Frequency Range and VSWR
1.1 max. 1 kHz – 900 MHz (DC for continuity checks)
Temperture Range
Water Only: +5 to +45 °C (41 to 113 °F)
35% Ethylene Glycol: -20 to +35 °C (-4 to +95 °F)
** See note 2 above
Coolant
Cooling Method: Water dielectric and forced air convection
Coolant: Distilled water or distilled water/ethylene glycol mixture
Coolant Capacity: 9 qts. (8.5 L) nominal
* See note 1 above
Product Type
Forced-Air Cooled
Operating Position
Horizontal Only
Connectors
See Model Matrix
Finish
Gray Powder Coat
Dimensions
26" x 19-5/8" x 19-1/4" (L x W x H)
670 x 500 x 490 mm
Weight
155 lbs. (70 kg)
Power
115 V models: 11 A nominal @ 115V ± 10% 60Hz
230 V models: 5-1/2 A nominal @ 230V ± 10% 50Hz
Notes:
- * Below 5°C, ONLY use 35% E.G. and 65% Dist. H2O mixture.
- ** Above 30°C (86 °F) with water only, or 25°C (77 °F) with a 35% ethylene glycol mixture, derate power to 20 kW max.
Model Selections
| Model | Connector |
|---|---|
| 8645B | 3-1/8" EIA, Flanged |
| 8646B | 3-1/8" EIA, Unflanged |