BlueCCTV 1 Input 4 Output HD-SDI Distribution Video Amplifier HD signal distance total up to 1300Feet 1 Input 4 Output HD-SDI Distribution Video Amplifier HD signal distance total up to 400 meters. HD-SDI re-clocking 1 in 4 out distribution amplifier Perfect for long range HD-SDI distribution application. Provides automatic input cable re-clocking and equalization to 400 meters