The HDTV antenna is no different than your standard VHF TV antenna. The broadcast signal in on the same old VHF frequencies. All that is changed is the signal will be digital rather than analog.
Also, the change that takes place in 2009 is to change all TV broadcast to digital mode. Some stations will broadcast an HD signal which will use a large portion of their broadcast spectrum. They may also broad cast a regular digital (non-HD) in the same spectrum, ie. you will see channels as 13.0, 13.1 and 13.2. Each station is alloted a given spectrum (or frequency band). Digital does not require and much bandwidth as does analog, so they can crowd the stations closer together.
2013 HitchHiker Champagne 38RLRSB, 2012 F350 Dually crew cab, 6.7L,
Mobile- Yaesu FT857D w/ Lil' Tarheel II antenna and Larsen dual bander, Turbo Tuner.
Base unit...Kenwood TS480HX, LDG AT200 Pro tuner, Eagle One Vertical and Windom 80 meter dipole.
Standard Schnauzer..her call is K9WOOF