SHV, MHV all good. I thought I remember MHV being a 10 kV rating, but maybe its another one. The only thing I dislike about these is that they are mostly used on RG58/59 sized cables. If you want to really improve your HV rating, use RG8 or one of the variants with solid polyethylene dielectric. Then you may use a HN or SC connector. The HN is a heck of a connector.