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5 kW, Oil-Cooled RF Terminations with 115 VAC or 230 VAC Blower
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Personal Greeting

8890-315 and 8890-320 Series, RF Loads are self-contained high-power 50 ohm coaxial transmission line terminations requiring either 115 VAC or 230 VAC for operating the blower unit which provides forced-air cooling for power between 1250 and 5000 watts. It provides accurate, dependable, and practically non-reflective termination for testing and adjusting transmitters under non-radiating conditions. The load consists essentially of a cylindrical film type resistor immersed in a dielectric coolant. The resistor, individually selected for its accuracy, is enclosed in a special tapered housing which provides a linear reduction in surge impedance directly proportional to the distance along the resistor.

  • Overload thermoswitch P/N 8890-008 is optional (Free assembly when ordered as a package)
  • Oil-assisted (vented) forced-air cooling for safe, continuous operation up to 5000W full rated power

product specifications:

Item No

8890-315 [320] Series

Item Name

5 kW, Oil-Cooled Terminations with 115 VAC or 230 VAC Blower Assy.

Power Rating

5000 W (continuous with blower on)
1250 W (with blower off)

Frequency Range and VSWR

DC - 1GHz @ 1.1 max.
1 GHz - 2 GHz @ 1.25 max.
2 GHz - 2.4 GHz @ 1.3 max.

Impedance Ω

50

Temperture Range

-40 to +45 °C

Coolant

2.9 gal. (11 liters) Silicone Oil

Operating Position

Horizontal Only

Connectors

See Model Matrix

Finish

Gray Powder Coat

Dimensions

See Model Matrix

Weight

See Model Matrix

Blower Selections

  • 889X-315 = 115 VAC, BA-300 Series Blower Unit Installed
  • 889X-320 = 230 VAC, BA-300 Series Blower Unit Installed

Model Selections

Model Connector Recess (In.) Diminsions, L x W x H Weight
8890-315 LC, Female n/a 23-1/8" x 7-3/8 " x 22-11/16"
(587 x 187 x 560 mm)		 70 lbs. (32 kg)
8890-320 LC, Female n/a 3-1/8" x 7-3/8 " x 22-11/16"
(587 x 187 x 560 mm)		 70 lbs. (32 kg)
8891-315 3-1/8" EIA, Flanged 0.922 25-1/8" x 7-3/8" x 22-11/16"
(638 x 187 x 560 mm)		 73 lbs. (33 kg)
8891-320 3-1/8" EIA, Flanged 0.922 25-1/8" x 7-3/8" x 22-11/16"
(638 x 187 x 560 mm)		 73 lbs. (33 kg)
8892-315 1-5/8" EIA, Flanged 0.625 23-1/8" x 7-3/8" x 22-11/16"
(587 x 187 x 560 mm)		 72 lbs. (33 kg)
8892-320 1-5/8" EIA, Flanged 0.625 23-1/8" x 7-3/8" x 22-11/16"
(587 x 187 x 560 mm)		 72 lbs. (33 kg)
8895-315 1-5/8" EIA, UnfFlanged 0.438 22-3/16" x 7-3/8" x 22-11/16"
(564 x 187 x 560 mm)		 72 lbs. (33 kg)
8895-320 1-5/8" EIA, UnfFlanged 0.438 22-3/16" x 7-3/8" x 22-11/16"
(564 x 187 x 560 mm)		 72 lbs. (33 kg)
8897-315 3-1/8" EIA, UnfFlanged 0.0 23-5/32" x 7-3/8" x 22-11/16"
(587 x 187 x 560 mm)		 73 lbs. (33 kg)
8897-320 3-1/8" EIA, UnfFlanged 0.0 23-5/32" x 7-3/8" x 22-11/16"
(587 x 187 x 560 mm)		 73 lbs. (33 kg)

Accessories:

QC Series, Quick Change Solderless Connectors

BA-300 Series
Blower Assembly

For more information,click here!

Downloads:

Declaration of Conformity

Manual