KENS Channel 5-1 has been coming in with a strong signal OTA for over three years on both my Tivo 10-250, and my D HR 21-700 AM 21. Two weeks ago I completely lost my 5.1 channel. It seems they are ahead of the curve for the February 2009 conversion. They are sending a Multiplexed signal which combines all three of their stations. San Antonio KENS is transmitting 5-1, 41-1, and 41-2 on the same signal. My AM 21 can bring in a great picture on both 41 channels, but it is completely unable to recognize 5-1. Channel 5-1 is the CBS affiliate, and the other two are national Hispanic programming. I tried four hard reboots, and OTA station resets, but 5-1 is not available. A signal strength test on all three channels gives me a 97 for all three. According to the engineers at the station, this signal multiplexing is cutting edge technology. Has anyone experienced this issue. I'm dedicated to OTA reception, because of picture quality, and programming variety.