30 ft 400 Series Ultra Low Loss Coax Cable w/ N Male Connectors for RF/CB Applications CA400 Comparable to Times Microwave, Shireen, Andrew, and Wilson 400 Series Ultra Low Loss Coaxial Cable. Works with all in-building amplifiers and CB Ham radios with N connectors (other connectors may require an adapter). Connects amplifier to splitters, taps, indoor and outdoor antennas, and other passive components. Attenuates signal less then .1 dB with 50 Ohm impedence; uses N Male connectors. Ultra low loss characteristics ensure the maximum performance of your installation.