I was able to find Air2TV and the reviews are not promising.
https://www.techhive.com/article/351...-2-review.html
Dagwood, I do not remember if the Channel Master was pass
through or not as I only had the useless piece of garbage for
less than a week. The tuner in the unit could not deal with
multiple channels. For example: WXXI on Rf 21, WXXI on
Rf 15 and WXXI on Rf 28. My antenna system "sees" several
copies of most stations broadcast via translator from Phoenix.