JEFA Tech RG-213/U is a very flexible, low loss coax cable which is ideal for HAM Radio HF and VHF use as well as CB Radio. This jumper is perfect for connecting your HAM or CB radio and AMP equipment to your antenna. This is premium RG-213/U - MILSPEC (MIL-C-17D). Our coax cable assemblies are produced to strict tolerances in our professional assembly facility in the state of Maryland, USA! Only cable marked JEFA Tech and our orange sleeve are genuine!