1)They are all RoHS UL CCC approval. 2)They are all excellent quality with reasonable price. 3)RG178/179 widely used for the electrical equipment of communication and brodcasting. 4)We can also customize medical device wire and cable as your request! RG 179 COAXIAL CABLE TECHNICAL DATA Temperature Range: -55~+200 Testing Voltage: 3000V Conductor: Silver plated copper Insulator: PTFE Intens. Max. (pf/m) 96.5 Impedance(ohm) 50 Rate(%) 69.5 Max voltage(VMS) 1000 Max rate(MHz) 3000 Decrease Rate(MHz) Decrease(dB/m) 100 0.453 400 0.912 1000 1.457 3000 2.572 Material Diameter(mm) Conductor Silver plated copper, 7*0.10 Insulator PTFE: 0.84 Pleach shield: Silver plated copper, 1.30 Sheathed FEP: 1.80