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Versatile RF loads for lab, field, and system integration

5 kW RF Load Series

Bird’s 5 kW loads are built for continuous-duty operation with stable 50-ohm performance and low VSWR. Available in oil-cooled or compact water-cooled designs, each model delivers rugged, reliable performance—backed by Bird’s trusted legacy of precision and durability.

Why Choose the 5 kW Series?

Explore 5 kW Load Series

8720-series_5kW_lightgrey

Water-Cooled Load
DC to 2 GHz

8720

Compact, high-efficiency RF load designed for continuous operation. Converts RF energy to heat through a hollow film element cooled by internal water flow. Requires 1 GPM of potable water for sustained performance.

8726-series_5kW_lightgrey

Water-Cooled Load
DC to 2 GHz

8726

Water-cooled load with QC-compatible LC connector for broadband, low-VSWR performance. Compact and position-independent—ideal for tight or rack-mounted installations.

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Oil-Cooled Loads
DC to 1 GHz

8920 Series

Oil-cooled, self-contained RF load for high-power, wideband testing. Delivers ultra-low VSWR (≤ 1.065) from 470–860 MHz, with models for semiconductor RF and digital TV applications.

8890-315_5kW_lightgrey

Oil-Cooled Loads w/Fan
DC to 1 GHz

8890 Series

Oil-cooled RF load with integrated blower for continuous high-power operation. Available in 115 VAC or 230 VAC models, combining dielectric fluid cooling and forced-air ventilation for efficient heat dissipation.

Compare Models

Find the right RF load for your application. Side-by-side technical specs across Bird’s trusted termination solutions.

Model Number
Frequency Range and VSWR
Connector
Type
Dimensions
Get Quote/Buy Now
DC to 500 MHz @ 1.10 max
500 MHz to 900 MHz @ 1.15 max
900 MHz to 2000 MHz @ 1.25 max
1-5/8 EIA, Flanged
{id=3, name='Water', order=2, label='Water'}
8-1/32 in L x 1-5/8 in dia - Excluding 8 in waterlines
(204 mm x 41 mm)
DC to 500 MHz @ 1.10 max
500 MHz to 2000 MHz @ 1.25 max
QC Type, LC (f)
{id=3, name='Water', order=2, label='Water'}
10-7/16 in L x 1-11/16 in dia
(265 mm x 43 mm)
DC to 1 GHz @ 1.10 max
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max
QC Type, LC (f)
{id=4, name='Oil', order=3, label='Oil'}
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
DC to 1 GHz @ 1.10 max
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max
QC Type, LC (f)
{id=4, name='Oil', order=3, label='Oil'}
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
DC to 1 GHz @ 1.1 max.
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max
3-1/8 EIA Flanged
{id=4, name='Oil', order=3, label='Oil'}
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
DC to 1 GHz @ 1.1 max
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max
3-1/8 EIA Flanged
{id=4, name='Oil', order=3, label='Oil'}
25.2 in x 7.4 in x 22.7 in
(638 mm x 187 mm x 560 mm)
DC to 1 GHz @ 1.1 max
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max
1-5/8 EIA Flanged
{id=4, name='Oil', order=3, label='Oil'}
25.2 in x 7.5 in x 17.25 in
(638 mm x 190 mm x 437 mm)
DC to 1 GHz @ 1.1 max
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max
1-5/8 EIA Flanged
{id=4, name='Oil', order=3, label='Oil'}
25.2 in x 7.5 in x 17.25 in
(638 mm x 190 mm x 437 mm)
DC to 1 GHz @ 1.10 max
QC Type, LC (f)
{id=4, name='Oil', order=3, label='Oil'}
32.8 in x 9.5 in x 26.9 in
(832 mm x 241 mm x 681 mm)
DC to 28 MHz @ 1.1 max
VSWR less than 1.05:1
QC Type, LC (f)
{id=4, name='Oil', order=3, label='Oil'}
32.8 in x 9.5 in x 26.9 in
(832 mm x 241 mm x 681 mm)
DC to 1 GHz @ 1.10 max
1-5/8 EIA Flanged
{id=4, name='Oil', order=3, label='Oil'}
32.8 in x 9.5 in x 26.9 in
(832 mm x 241 mm x 681 mm)
DC to 1 GHz @ 1.10 max
3-1/8 EIA, Flanged
{id=4, name='Oil', order=3, label='Oil'}
32.8 in x 9.5 in x 26.9 in
(832 mm x 241 mm x 681 mm)
470 MHz to 860 MHz @ 1.065
3-1/8 EIA, Flanged
{id=4, name='Oil', order=3, label='Oil'}
32.8 in x 9.5 in x 26.9 in
(832 mm x 241 mm x 681 mm)
DC to 1 GHz @ 1.10 max
3-1/8 EIA, Unflanged
{id=4, name='Oil', order=3, label='Oil'}
32.8 in x 9.5 in x 26.9 in
(832 mm x 241 mm x 681 mm)
470 MHz to 860 MHz @ 1.065
3-1/8 in EIA, Unflanged
{id=4, name='Oil', order=3, label='Oil'}
32.8 in x 9.5 in x 26.9 in
(832 mm x 241 mm x 681 mm)
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Why RF Pros Choose Bird Loads

Accuracy, protection, and lasting performance—Bird loads deliver where it counts. From convection to water- and air-cooled designs, each is built to absorb full RF power, minimize VSWR, and perform reliably in the toughest environments.

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