02-28-2015, 12:58 PM
Yes-- 41.8 and 41.9 are non-video channels and part of the UpdateTV service which carries software updates for smart TVs over-the-air. It comes from Kulani Cone near Volcano, and piggybacks on the Hawaii PBS signal. If you ever get 28.8/28.9 or 19.8/19.9, those are the same thing (from Saddle & Hilo respectively).