Fully complying with the latest international regulation, IMO MSC 74 (69), ITU M.1371-4, IEC 61993-2, etc. – Easy operation wth graphic mode display and function keys. – Interface for RADAR, ECDIS, ECS, GYRO and external GPS equipment. SPECIFICATIONS Frequency: 156.025 _ 162.025MHz Default Channel: __2087, __2088 DSC Channel: CH70 (156.525MHz) TX Power: 12.5W (High) / 1W (Low) I/O Interface: INPUT RS-422×3, OUTPT RS-422×4 Power Supply: DC24V_12~38V_ Size: 81(H) x 174 (W) x 257(D) mm Weight: abt 3kg (Transponder)