Mabee I'm wrong, but I dont think you can do that with a 7 segment LED. You could possibly do it with a plasma screen like on the RCI 2950 but again I dont think its possible on the 7 segment LEDs found on 99% of the radios.bob85 said:has anybody tried reversing the polarising filter on the lcd panel to make the background dark with the digits lighted, my buddy used to do it to everything from pocket calculators to hf sets, i thought he was crazy but it did work..