I am a newbie also! For all repeaters listing 'tone' frequencies, those have to be CTCSS as DCS is a digital code, not frequency based. For example, there is a repeater near me that lists a tone of 141.3 MHz, which is CTCSS 'tone' 22. I am not sure if the 'tone' is required to use the repeater as my understanding is that 'tones' only filter who you can hear on any given channel, while using no 'tone' allows you to hear all activity on any given channel.