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Air-cooled termination for high-power RF up to 50 kW

50 kW Moduloads RF Loads

The 8650B Series provides high-power RF termination in a compact, air-cooled design, ideal for continuous operation up to 50 kW. Built for demanding transmitter environments, this load efficiently dissipates energy across a broad frequency range up to 900 MHz—without the need for water-based cooling systems.

An integrated interlock control circuit ensures safe shutdown in the event of blower or power failure, protecting both the load and the transmitter. Its low-profile footprint allows installation in space-constrained racks or shelters, and multiple voltage configurations make integration flexible and site-ready.


Voltage Options

  • 115 V @ 60 Hz (-115)
  • 230 V @ 50 Hz (-230)
  • 230 V @ 60 Hz (-230-6)
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Why Choose the 8650B Series?

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
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8655B115-6 request_button
1 kHz to 900 MHz @ 1.10 max (DC for continuity checks)
3-1/8 EIA, Flanged
50.5 in x 19.2 in x 19.6 in
(L x W x D)
(659 mm x 487 mm x 497 mm)
275 lb (125 kg)
8655B115-6-LP request_button
1 kHz to 900 MHz @ 1.10 max (DC for continuity checks)
3-1/8 EIA, Flanged
50.5 in x 19.2 in x 19.6 in
(L x W x D)
(659 mm x 487 mm x 497 mm)
275 lb (125 kg)
8655B230-5 request_button
1 kHz to 900 MHz @ 1.10 max (DC for continuity checks)
3-1/8 EIA, Flanged
50.5 in x 19.2 in x 19.6 in
(L x W x D)
(659 mm x 487 mm x 497 mm)
275 lb (125 kg)
8655B230-5-LP request_button
1 kHz to 900 MHz @ 1.10 max (DC for continuity checks)
3-1/8 EIA, Flanged
50.5 in x 19.2 in x 19.6 in
(L x W x D)
(659 mm x 487 mm x 497 mm)
275 lb (125 kg)
8655B230-6 request_button
1 kHz to 900 MHz @ 1.10 max (DC for continuity checks)
3-1/8 EIA, Flanged
50.5 in x 19.2 in x 19.6 in
(L x W x D)
(659 mm x 487 mm x 497 mm)
275 lb (125 kg)
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Why RF Experts Choose Bird

For over 80 years, RF professionals have trusted Bird loads to deliver unmatched stability, low VSWR, and rugged reliability—whether on the bench or in the field. These aren’t just terminations—they’re peace of mind for your entire system.

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