SG1 Radio Channels A BIT ABOUT US SG1 Radio is a vibrant internet radio station serving the local community and businesses within the SG postcode area whilst broadcasting worldwide.The SG1 Radio schedule covers a variety of genres and shows to appeal to a broad spectrum of listeners. You can access SG1 Radio either directly through its web page or by downloading the Postcode Radio or Tune in app on your mobile device or Amazon ALEXA