The following was posted by tofurky in the old MTS HD thread and I reproduce here since folks will be asking.
51-CBC HD (CBLT)
52-ABC HD (KOMO)
53-CBS HD (KIRO)
54-FOX HD (KCPQ)
55-NBC HD (KING)
56- PBS HD (KCTS)
58 - Sportsnet HD
Frequently Asked Questions from MTS
Will I get a separate MTS High Definition TV bill?
No, the monthly charge will be added to your regular MTS bill.
How will Standard Definition programs appear on my High Definition TV?
How Standard Definition channels appear on your High Definition TV will be determined by how you adjust your settings on your HD Television. You may have the option of converting (stretching) the standard definition picture into widescreen format or viewing the program with black bars on each side of the program.
What types of outputs are available on the RG3000 High Definition Set Top Box?
The RG3000 High Definition Set Top Box has multiple outputs including: Component (YPbPr), Composite (CVBS), S-Video, Coaxial, and AC-3 Optical Audio.
Can I watch regular standard definition shows through my RG3000 Set Top Box?
Yes, both High Definition channels and Standard Definition channels can be viewed through the RG3000 High Definition Set Top Box. Changing channels between the two will be the same as changing between two Standard Definition channels.
How do I access On Demand Services through my MTS High Definition TV?
To access MTS On Demand Services such as MTS Video On Demand, MTS Weather On Demand, MTS Games On Demand, etc., you must switch to your Standard Definition set top box. Access to MTS On Demand Services using your RG3000 High Definition set top box will be available in the coming months.
Using your original TV remote control (not the MTS TV remote control), switch to the appropriate Video Source for the Standard Definition Set Top Box. If your Standard Definition Set Top Box is connected to your television set via a coaxial cable, you must switch to channel 4, 8, or 11. If your Standard Definition Set Top Box is connected to your television via S-Video or Composite (RCA) cable, you must switch to the Video input where it is connected.
The video input may have different labels depending on your TV set, but some common ones include: Video 1, Video 2, or AUX Your High Definition Set Top Box should be connected to your television set via Component cables. The Component input may have different labels depending on your TV set, but some common ones include: Video 1, Video 2, Component 1, Component 2, or AUX.