Crimp-Crimp This connector is generally used for higher frequency applications, above 2 GHz, as the center contact is more closely dimensionally matched to the center conductor of the cable. This combined with a crimped and/or soldered center contact provides a lower V.S.W.R. even at frequencies up to 4 GHz. This connector is also used for a cable with a more flexible stranded center conductor. Here a 75 Ohm connector should be used if system operating frequency is above 1GHz.