Does the SR-955HPC have a "PA mode". If yes, where is the switch or button? Shawn July 31, 2017 21:27 The mode switch allows you to select the PA option. Related articles What fuse do I need for the SR-955HPC? Interference from the flashing lights on my vehicle? Does the Stryker SR-955 HPC transmit a CTCSS tone to access repeaters? Comments 0 comments Article is closed for comments.