How do I disable the CTCSS/DCS tone on the Durafon-UHF? EnGenius Admin Updated August 16, 2020 17:51 Follow Press Mode button three times. Use the up and down button to change the code. (Set “code” to “0”) Related articles Does Durafon-UHF have the ability to scan channels? Comments 0 comments Please sign in to leave a comment.