I've done it on other frequencies/channels and we talked quite a ways away and by that I mean multiple miles I know it won't be super accurate but if I don't turn one radio off since I'm sitting in my car trying to get it on my mobile or the handheld whichever one I'm trying to program at that time the easiest if I don't shut the other one off or turn the volume down super low it blows out my eardrum with the squelch lol