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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when functioning as complete radar transmission module
Complete radar apparatus incorporates klystrons under 8526, unlike separate tubes; assembly state determines heading.
If power converter sections sold separately
Static converters or power supplies for klystrons classified by function, not as microwave tubes.
If other electrical machines for electric power generation
If primarily viewed as RF power generator without tube characteristics, may shift to 8543 machines.
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Import Tips & Compliance
• Comply with ITAR/EAR export controls for defense-related radar klystrons; provide frequency/power specs in entry docs
• Test for vacuum integrity to prevent classification disputes as defective tubes
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.
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.
Thales THKX50 Ku-Band Klystron
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CPI TMD VKS-8262B S-Band Klystron
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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
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