Re: How will the mandatory HD effect us?
The cable boxes still use analog except for the higher channels.Through Time Warner in my area channels 2 thru 98 are analog.It does not convert it to digital.So either the cable companys will need to upgrade the boxes or change all of their format or you will still need a converter box.
I have cable,DirecTV and off air antenna for HD,The antenna is by far the best.Cable and Direct have to compress the bandwidth so much it degrades the picture.With an antenna there is very little signal compression.I get 27 digital channels with the antenna.With true digital its either a perfect picture or none at all except in week signals where you get the picture freeze or pixelizing.
About all the new TVs have digital tuners even if they are not HD.
True , the name of the game is bandwidth , and if you don't have enough you are in a predicament .
Cable providers , despite having ~ 700 MHz of available bandwidth in most modern HFC systems , still have to use ~ 450MHz to offer the 2 legally required "tiers" of programming to subscribers .
This leaves a ~ 250MHz to sqeeze in all those digital channels , SD and HD , along with other services like HSD and phone services .
Hence they have to compress everything , which leads to artifacts due to the nature of MPEG Codecs .
I'm sure they would love to go all digital and free up massive amounts of bandwidth , but , given the legal restrictions and customer demands , it isn't going to happen soon ( all those old folks with thier old analog sets....

) .
Dish and Direct , have the same issue , despite using an all digital transmission scheme .
Despite using wideband digital transponders on thier satellites , they have both had to use multiple satellites each to deliver the extra HD content , and , they also have to use rather extreme amounts of compression to accomplish this .
OTA digital transmissions essentialy only have to transmit a single channel in 1 6MHz "channel" so compression is not an issue , hence little or no artifacts .
Local OTA digital does have range issues , a little more so than analog OTA .
Those in fringe areas may well have some problems .
Essentialy the whole 2009 Digital transition is a lot of hype about nothing .
Get a set top Digital tuner , or , a new tv with it's own digital tuner .
You may have to update / upgrade your antennae sytem also .
If you have cable or a dish , go watch tv and forget about it .
Or better yet , just forget about tv all together and go do something constructive .
