Why are some digital channels on VHF?

[Garrett Wollman]

<<On Sat, 2 Feb 2008 15:48:52 -0500, "Kevin Vahey" <kvahey@comcast.net> said:

> I am curious why in some markets some stations have been assigned
> digital channels in the VHF band? For example WBBM-DT Chicago is now
> on Channel 3 and will move to Channel 12 next year.

Why not?  They have to go somewhere, and bands I and III aren't
interesting to wireless carriers so there's no big auction windfall
waiting around the corner.

>From a technical point of view, every station would be on VHF-high
(band III in ITU terminology) if it could, to maximize coverage while
minimizing electricity usage.

-GAWollman