RFS LCF12-50J 1/2″ CELLFLEX Low-Loss Foam-Dielectric Coaxial CableBy Joshua Hughbanks / January 20, 2015 RFS LCF12-50J 1/2″ CELLFLEX Low-Loss Foam-Dielectric Coaxial Cable. Our Low Price: OUT OF STOCK Contact us if you have surplus for sale.