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%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
• 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