Unistrand ctf100 drop subscriber feeder cable 100m unistrand 3248 p the unistrand ctf100 drop subscriber feeder cable is a screened cable having an impedance of 75 omega the inner conductor is well protected with three coatings for added protection the unistrand ctf100 is sheathed overall in black pvc this unistrand ctf100 is commonly used for communication and signal control systems and other applications p unistrand 3248 ctf100 drop subscriber feeder cable 100m