Yes you would need to talk to KE4ZNR, just talked to one of the communicators and they stated there are other ops channels and they are hardly used. They are probably off repeater but I can't be sure. I do know we had quite a few off repeater channels but I can't remember the names at all. Or if you know his call sign, you can lock out his id when he transmits and see if he transmits on any groups not listed in the db