What are the correct settings for MDC in CPS 2.0? My radio is a CM300d VHF. I have the Signaling Squelch set to OR, Unmute/Mute Rule set to And Unmuting/Or Muting, Criteria Type 1200Hz and 1800Hz, Auto Mute Duration 500ms, Coast Duration 50ms. I only hear a very short beep, not the usual MDC chirp. Any help would be appreciated. Thanks!