LEDs light up the entire sign in either red for on the air or another color for receiving operations. The acrylic sign is edge-lit which gives it a very nice effect. We always enjoy edge-lit projects.

7 thoughts on “ On-Air Sign Helps Keep Your Broadcasts G-Rated ” Peter Knoppers says: ... but has a more a white glow around it which makes “clipping” on a light sensor a little hard.