Ohm: /ōm/ noun: expressing the resistance in a circuit Ohm Radio is Charleston’s first community, commercial-free radio station broadcasting locally produced programming offering a wide range of community perspectives and really good music. We celebrate Charleston's beloved creatives, musicians, artists, authors, students, business owners and thought leaders on our airwaves. Ohm Radio is the latest venture of Media Reform SC, a grassroots nonprofit group promoting democracy through media.