4-Wire Telephony Repeater from Japan
Dual-channel audio-frequency repeater for 4-wire telephony circuits, providing independent TX/RX amplification with hybrid balance. Used in microwave radio backhaul audio channels. Fits HTS 8518.40.10.00 telephony repeater criteria.
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
• Document 600/900 ohm impedance matching for legacy systems
• Return loss and crosstalk specs validate telephony application
• Avoid fiber optic variants; pure electrical line repeaters only