TWTA-Qualified CW Klystron Amplifier
A continuous wave (CW) klystron designed for high-power RF amplification in satellite ground station transmitters, operating at X-band frequencies (8-12 GHz) with output power exceeding 10 kW. It falls under HTS 8540.79.10.00 as a klystron, which is a specialized microwave tube using velocity modulation for amplification in radar and communication systems. This excludes grid-controlled tubes and covers other microwave tubes explicitly named as klystrons.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as replacement part for TV/radar systems without standalone function
Parts of radar/radio equipment not suitable for independent use fall under 8529.90, differing from complete functional microwave tubes like klystrons.
If for use in oscilloscopes or high-frequency test instruments
Oscilloscopes and similar instruments with high-frequency capabilities use different headings, shifting from microwave tube classification.
If integrated into complete communication apparatus
When assembled into finished telecom machines, the klystron becomes a part under 8517 rather than a standalone tube.
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Import Tips & Compliance
• Verify klystron specifications match subheading exclusions (no grid-control); obtain FCC certification for RF devices
• Include technical datasheets proving microwave tube functionality to avoid misclassification as general parts
Related Products under HTS 8540.79.10.00
Rohde & Schwarz KLY4 Pulsed Power Klystron
Rohde & Schwarz KLY4 test klystron generates precise 1 MW pulses at 3-4 GHz for EMC/EMI chamber calibration. Classified HTS 8540.79.10.00 as klystron for test equipment applications. Provides stable reference signals for compliance testing.
Varian VKP-7865A X-Band Pulsed Klystron
The Varian VKP-7865A is a pulsed klystron oscillator producing 5 MW peak power at 9.3 GHz, used in high-resolution weather radar systems for atmospheric monitoring. Classified under HTS 8540.79.10.00 as a klystron microwave tube, it employs multiple resonant cavities for RF power generation in pulsed applications. Meets chapter criteria for thermionic tubes excluding grid-controlled variants.
Thales THKX50 Ku-Band Klystron
Thales THKX50 klystron provides 50 kW CW power at 13.75-14.5 GHz for Very Small Aperture Terminal (VSAT) satellite uplinks in broadband internet services. HTS 8540.79.10.00 applies as it is a klystron microwave tube for high-power RF transmission, distinct from magnetrons or TWTs. Used in commercial telecom ground stations.
CPI TMD VKS-8262B S-Band Klystron
CPI TMD VKS-8262B pulsed klystron delivers 7.5 MW at 2.9 GHz for air traffic control primary surveillance radars. Falls under HTS 8540.79.10.00 as a klystron, a velocity-modulated microwave tube for pulsed radar applications in aviation safety. Excludes consumer electronics tubes.
L3Harris X-Band Multi-Beam Klystron
L3Harris multi-beam klystron (MBK) achieves 100 kW CW at 9-10 GHz for electronic warfare jamming systems in military aircraft. HTS 8540.79.10.00 covers this advanced klystron variant using multiple electron beams for efficiency in high-duty cycle operations. Specifically named as klystron microwave tube.
Canon CNK-50H Industrial Klystron
Canon CNK-50H klystron generates 50 kW at 2.45 GHz for industrial RF plasma processing in semiconductor manufacturing. Classified HTS 8540.79.10.00 as klystron microwave tube for material processing applications. Provides stable high-power RF for etching/deposition equipment.