Relatively short coaxial cable runs of DS-3 and GPS timing outdoors are susceptible to disturbances that may require the use of electrical primary protection devices. Application and selection considerations for the use of these protectors for DS-3 and GPS timing on type 734A, 735A, LMR-400, RG-59, RG-8, or similar coaxial cables run outdoors are highlighted herein. This document is to be used in conjunction with the master document (ATIS-0600012) for broadband protectors, which describes the attributes of the various protective devices themselves.