leaky feeder cable

Leaky feeder cable/MSHA cables are used when normal radio communication is difficult or impossible in particular communication systems where a discrete antenna would not provideadequate coverage. A radiating cable functions not only as a transmission line but also as an antenna.Li-Bo SLYFYVZ-75-10polyethylene foaming bunchy outer conducter conductor radiating coaxial cables, which are based on international advanced standards,have very good electrical performances and can be widely used in the following applications:·Buildings, Mines,subways and tunnels·Travlers information stations/highway advisory radio·Uncovered area by antennasDetailed Product Description PHYSICAL FIGGURES: Frequency: 5 to 500MHz impedance: 75 ohms Attenuation @ 150MHz: 4.0dB/100m Attenuation @ 450MHz: 6.1dB/100m dielectric: Gas injected pe inner sheath: BLAcK Fire retardant outer sheath: BLUe Halogen Free dc resistance inner conductor: <4.5 ohm/km dc resistance outer conductor: <4.1 ohm/km capacitance: 54pF/m insulation resistance: >10.4Mohm/km Minimum static Bend radius: 150mm operating temperature: -40 to +70 degree c outer sheath diameter: 16.0mm +/- 0.3mm coupling Loss 50% 90% 85mHz: 73.0dB 76.0dB 150mhz: 75.7dB 83.5dB 345mhz: 78.7dB 85.5dB 450mhz: 77.0dB 83.0dB