Traveling Wave Tube Amplifier TWTA-40GHz from China
A high-power traveling wave tube (TWT) microwave amplifier operating at 40 GHz with 200W output, essential for satellite uplinks and deep-space communications. Classified under HTS 8543.70.80.00 for its function as a microwave signal amplifier using vacuum tube technology. It amplifies weak microwave signals to high power levels for long-distance transmission.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• TWTA imports require radiation safety certifications and spectrum authority approvals; document vacuum tube specifications clearly
• Watch for misclassification as complete transmitters
• Ensure proper declaration of high-voltage components to avoid safety inspection delays