Traveling Wave Tube Amplifier TWT from Germany
High-power vacuum tube amplifier using a helix slow-wave structure for microwave amplification in satellite communications. HTS 8540.89.00.80 covers this as other vapor or vacuum filled tubes for RF applications.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• ,Specify helix construction and vacuum envelope in technical literature for proper 8540 classification