TWTA-Qualified CW Klystron Amplifier from Japan
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.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• 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