Search for topics or resources
Enter your search below and hit enter or click the search icon.
Skip to main content
RF Measurement
RF Equipment
High-power solutions for demanding RF test and system applications
1 kW RF Load Series
Whether convection- or oil-cooled, Bird’s 1000 W loads are built for continuous high-power operation with low VSWR and robust thermal performance. Ideal for transmitter testing, load substitution, and system protection, they’re trusted in lab, field, and industrial environments. Choose from low-maintenance dry models or oil-dielectric designs for enhanced thermal stability.
Explore the 1 kW Series Loads
DC to 2.4 GHz
Convection-Cooled
Loads
1000-T Series
Convection-cooled RF load designed for high-power system testing and protection. Built with durable construction, an integrated handle for easy transport, and optional Quick-Change connectors for flexible field use.
Key Features:
- Portable with built-in handle
- Vertical footprint
- Broad frequency range
- Low maintenance
Ideal for: General-purpose RF testing
DC to 2.4 GHz
Convection-Cooled
Loads
1000-WT Series
Rugged, maintenance-free RF load with passive convection cooling and optional QC connectors. Ideal for high-power, long-duration testing in controlled environments where clean, reliable performance is essential.
Key Features:
- Low profile, wide footprint
- Broad frequency range
- Low maintenance
Ideal for: General-purpose testing when rack height is limited.
DC to 2.4 GHz
Oil-Cooled
Loads
8251 Series
Oil-cooled, self-contained RF load designed for high-power testing up to 1 kW. Provides stable 50-ohm impedance, low reflection, and continuous operation—no external power or cooling required.
Key Features:
- Tight VSWR performance of 1.10 @ 1 GHz
- No blower or electricity required
- Built-in handle for portability
Ideal for: General-purpose RF testing
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
Dimensions
Weight
Get Quote/Buy Now
1000-T-FN
Buy Now
DC to 1 GHz @ 1.15:1 max
1 to 2.4 GHz @ 1.25:1 max
1 to 2.4 GHz @ 1.25:1 max
N (f)
12.3 in x 9.6 in x 12.8 in
(313 mm x 244 mm x 326 mm)
(313 mm x 244 mm x 326 mm)
26.5 lb (12.0 kg)
1000-T-MN
Buy Now
DC to 1 GHz @ 1.15:1 max
1 to 2.4 GHz @ 1.25:1 max
1 to 2.4 GHz @ 1.25:1 max
N (m)
12.3 in x 9.6 in x 12.8 in
(313 mm x 244 mm x 326 mm)
(313 mm x 244 mm x 326 mm)
26.5 lb (12.0 kg)
1000-T-QFN
Buy Now
DC to 1 GHz @ 1.15:1 max
1 to 2.4 GHz @ 1.25:1 max
1 to 2.4 GHz @ 1.25:1 max
N (f)
12.3 in x 9.6 in x 12.8 in
(313 mm x 244 mm x 326 mm)
(313 mm x 244 mm x 326 mm)
26.5 lb (12.0 kg)
1000-WT-FN
Buy Now
DC to 1 GHz @ 1.15:1 max
1 to 2.4 GHz @ 1.25:1 max
1 to 2.4 GHz @ 1.25:1 max
N (f)
18.5 in x 10.6 in x 4.8 in
(470 mm x 270 mm x 122 mm)
(470 mm x 270 mm x 122 mm)
26.5 lb (12.0 kg)
1000-WT-MN
Buy Now
DC to 1 GHz @ 1.15:1 max
1 to 2.4 GHz @ 1.25:1 max
1 to 2.4 GHz @ 1.25:1 max
N (m)
18.5 in x 10.6 in x 4.8 in
(470 mm x 270 mm x 122 mm)
(470 mm x 270 mm x 122 mm)
26.5 lb (12.0 kg)
8251
Buy Now
DC to 1 GHz @ 1.1 max
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 @ 1.3 max
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 @ 1.3 max
LC (f)
18 in x 6 in x 8.5 in
(455 mm x 151 mm x 216 mm)
(455 mm x 151 mm x 216 mm)
25 lb, 8 oz (11.5 kg)
8251D
Buy Now
DC to 1 GHz @ 1.1 max
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max (1.065 max, 470 to 860 MHz for "D" Models)
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max (1.065 max, 470 to 860 MHz for "D" Models)
1-5/8 EIA, Flanged
18 in x 6 in x 8.5 in
(455 mm x 151 mm x 216 mm)
(455 mm x 151 mm x 216 mm)
25 lb, 8 oz (11.5 kg)
8251D7-16
Buy Now
DC to 1 GHz @ 1.1 max
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max (1.065 max, 470 to 860 MHz for "D" Models)
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max (1.065 max, 470 to 860 MHz for "D" Models)
7/16 (f)
18 in x 6 in x 8.5 in
(455 mm x 151 mm x 216 mm)
(455 mm x 151 mm x 216 mm)
25 lb, 8 oz (11.5 kg)
8251D716-300
Get Quote
DC to 1 GHz @ 1.1 max
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max (1.065 max, 470 to 860 MHz for "D" Models)
1 GHz to 2 GHz @ 1.25 max
2 GHz to 2.4 GHz @ 1.3 max (1.065 max, 470 to 860 MHz for "D" Models)
7/16 (f)
18 in x 6 in x 8.5 in
(455 mm x 151 mm x 216 mm)
(455 mm x 151 mm x 216 mm)
25 lb, 8 oz (11.5 kg)
Swipe for more
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.
