Minimum power wire size? 8 or 10 ga? Shawn August 01, 2017 15:58 10 gauge wire is sufficient for any of our radios. Related articles Interference from the flashing lights on my vehicle? : Can you explain the proper operation of the ASQ option on the 447HPC2? If ASQ is active, does the squelch control need to be adjusted, and if not, at what signal level does it open? SR-955HPC Setup Guide When i key up on channel 19 it changes to 00 and 2.1 trying to figure out what this means and if it's good or bad.. Fuse size (amps) for SR-497HPC? Comments 0 comments Article is closed for comments.