How can I remove the factory frequencies in my Baofeng UV 82?
You can remove them 1 at a time using menu 28 (DEL-CH), but you will need to program at least 1 other memory channel with a frequency that you want before you erase the last one. This is because you cannot erase all 128 memories. As soon as you erase the last one, the radio will reboot and memory 0 and memory 127 will be programmed with the firmware default frequencies.
Another way would be to use menu 41 (RESET). But same as above, the radio will have the firmware default frequencies in memory 0 and memory 127.
Reference for UV-82 Menus
So the fastest way to rid the radio of the factory frequencies would be to perform a RESET, program at least 1 channel, and then erase memory 0 and memory 127 with DEL-CH.
With programming software, you can just change them to something else or erase them altogether.
Jim KC9HI