So, me and a friend of mine have NX700-E (since we are in Europe) in our hands. Both radios work well on analog and digital but just for fun we wanted to try digital scrambler. Connected both radios to program such channel but scrambler option is grayed out. Scrambler option is visible in the radio menu as well but it cannot be turned of - when you set it to ON and confirm, it automatically goes back to OFF. I thought that 15-bit digital scrambler is available by default. Is there something we are missing?