Where is the PA Jack? Shawn March 21, 2018 21:28 The CW jack on the back of the radio is used for the PA Speaker. Related articles SR-655HPC Setup Guide SR-447HPC / SR-497HPC Setup Guide Radio should be putting out 80+ watts. Indicating only 40-50 with RF power on max and mic gain on high. What's your most powerful radio? Can I upload music for a Roger beep or can I only use tones for it? Comments 0 comments Article is closed for comments.