Joe VE7VXO has again updated the firmware for the HR-500. Version 7.00 is available at:
A new menu item has been added that when selected allows a variable amp hang time after the PTT is released. This allows an adjustable PTT hang time for exciters that do not have a built-in hang time, e.g., my Wilderness Sierra. I have been using and testing this firmware mostly with my KX3 with its CW DELAY arbitrarily set to zero. In all respects the new firmware has been working well in my HR-500 with all of the features that have been previously curated.
Joe cautions against downloading other versions of his firmware that have been posted on other sites. He has no way to assure their veracity. All previous bugs have been removed from his recent versions including v7.00 which is available on the github link above. I appreciate the all-improved and reliable PTT performance and improved watt and peak reading meter performance the most.
Have fun and 73,
Andy W9NJY