5 kW, Oil-Cooled RF Terminations with 115 VAC or 230 VAC Blower
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.
Features
- 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
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 |
Dimensions, L x W x H |
Weight |
| 8890-315 |
QC-LC(F)
|
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
|
59 lbs. (27 kg) |
| 8890-320 |
QC-LC(F)
|
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
|
59 lbs. (27 kg)
|
| 8891-315 |
3 1/8 in EIA, Flanged
|
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
|
59 lbs. (27 kg)
|
| 8891-320 |
3 1/8 in EIA, Flanged
|
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
|
59 lbs. (27 kg)
|
| 8892-315 |
1 5/8 in EIA, Flanged
|
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
|
59 lbs. (27 kg)
|
| 8892-320 |
1 5/8 in EIA, Flanged
|
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
|
59 lbs. (27 kg)
|
| 8895-315 |
1 5/8 in EIA, Unflanged
|
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
|
59 lbs. (27 kg)
|
| 8895-320 |
1 5/8 in EIA, Unflanged
|
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
|
59 lbs. (27 kg)
|
| 8897-315 |
3 1/8 in EIA, Unflanged
|
23.2 in x 7.4 in x 22.7 in
(590 mm x 188 mm x 577 mm) |
73 lbs. (33 kg) |
| 8897-320 |
3 1/8 in EIA, Unflanged
|
23.2 in x 7.4 in x 22.7 in
(590 mm x 188 mm x 577 mm)
|
73 lbs. (33 kg) |
Need Replacement Parts?
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 @ 1.10 max.
1 GHz - 2 GHz @ 1.25 max.
2 GHz - 2.4 GHz @ 1.3 max.
Temperture Range
-40 to +45 °C
Coolant
2.9 gal. (11 liters) Silicone Oil
Operating Position
Horizontal Only
Connectors
See Model Matrix
Dimensions
See Model Matrix