trunk cable 540 specification 1) center conductor: bear copper 2) insulation: pe nom. thickness (mm): 0.03 insulation dia. (±0.03mm): 13.0 3) outer conductor: al tube nom. dia. (mm): 13.8 4) jacket: pvc/pe/losh cable dia. (±0.01mm): 16.0 5) steel messenger nom. dia.( ±0.01mm): 2.77 electrical characteristics: 1) capacitance: 50 nf/km 2) impedance: 75 ohms 3) velocity of propagation: 87% 4) shielding effectiveness ﹥100db 5) return loss(100% swept) 1-470 mhz ≧22db 470-1000 mhz ≧20db mechanical characteristics 1) minimum bending radius(jacket) 4.00in 32cm 2) minimum breading strength of messenger: 1800ibs 816kgf 3) dielectric adhesion ﹥20n/5cm frequency (mhz) attenuation (db/100m) 55 1.54 250 3.38 300 3.71 400 4.33 500 4.89 600 5.38 750 6.07 865 6.56 1000 7.12 packing: 1) packing lengths: 1000m/wooden spool client’s request are welcomed 2) inner packing: wooden reel 3) outer packing: without carton box product origin: china brand name: nai productivity: 200,000km/year price terms: fob, cif, c&f payment terms: t/t, l/c at sight shipping date: generally within 15days certificates: iso9001, ul, rohs, ce