30' Black Ultra Low Loss Cable (N/Male & SMA/Male Connectors) This cable is typically used to connect an antenna with an N/Female connector to a router or amplifier with an SMA/Female connector. Specifications: Cable length: 30 Foot Connectors: N/Male & SMA/Male Cable diameter: 7/16" Impedance: 50ohms Signal Loss: The amount of signal attenuation you'll see depends on which frequency you're using. This cable averages approximately 1.5dB of signal loss. The attenuation for each frequency is below: 700mhz: 1.0dB 800mhz: 1.1dB 1700mhz: 1.6dB 1900mhz: 1.7dB 2100mhz: 1.8dB 2400mhz: 2.0dB 2500mhz: 2.0dB Approximately .5dbm is lost at each connection between 2 cables To prevent excessive signal loss, this cable should NOT be daisy chained with other cables! It is always better to use one longer piece of cable than to screw two shorter cables together.