Mr. Brian A. Billeck sent me this email in regard to this post that was emailed to him:
Regarding the HD: The HD broadcast was a mandate and a push from CBS Radio.
In September KTSA-AM was sold (along with sister station KJXK-FM / JACK-FM) to
BMP, LP.
BMP, LP does not broadcast its stations in HD. This may change during the
course of time, however at currently KTSA-AM as well as KJXK-FM and the other
BMP, LP stations will not broadcast in HD.
KTSA-AM is available on-line at KTSA.com so you may enjoy listening to KTSA in
the office if the signal is unclear.
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[EDIT]
[EDIT-privacy concerns]