I've noticed in the last couple of days that Charter in Jackson, TN has changed most of the basic channels that were still in analog in the range under 200 to the HD versions, but the analog channels are still coming in on my old SD sets, and the HD channels are still available in the 700 to 900 range. Is this possible because the lower numbered channels are being mapped to the HD positions now? This is just a guess because I have HD tuners on my HD sets, and my older sets are still connected without a tuner box. Also, is this an indication that Charter will be getting rid of the analog channels soon and I'll need tuners on all my sets? Thanks! 