Repeater Station Microphone Pre-Amplifier from Japan
Low-noise pre-amplifier circuit board for microphone signals in analog telephone repeater stations (8518.40.10). Provides initial gain before main repeater amplification stages. HTS 8518.90.41.00 classification.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Specify noise figure and gain specifications matching analog repeater requirements
• Include system block diagrams showing position in repeater signal chain
• Telecom carrier qualification documents strengthen classification claims