A SD channel can still be digital.
I'm Just guessing that You are talking about the SiliconDust HomeRun Tuner?
If so http://www.silicondust.com/products/hdhomerun/atsc/
Free Broadcast TV
Use an antenna to pick up the FREE
broadcast digital TV (ATSC) available in your area – ABC, CBS, FOX, NBC,
PBS, and other networks.
As Well as
Unencrypted digital cable TV
Unable to use an antenna?
Connect your HDHomeRun directly to the incoming cable line to receive
the unencrypted digital cable (“ClearQAM”) channels your cable provider
Or to put it another way they are only taking the digital signal for distribution.
There is no Analog to Digital hardware and if the channels you mention are Analog channels they will not be available.
Analog channels would be channels that can be tuned by the old style TVS that do not have a Digital tuner.
Many Cable companies are still providing a Analog Channel lineup along with a digital Lineup.
Edited by rotor123, 27 February 2013 - 12:49 PM.