Yup all you need are the CONTROL CHANNELS the primary and the alternates.so in the radio reference date vase the RED & BLUE FREQS. No voice channelsJust purchased new 996xt. I understand that I can program Motorola smart zone 2 by entering control freq. only and if so should I enter all control freqs.? My data shows 3 or 4.Is this the way to go? Sounds too good to be true.