WTAO-TV and WXHR

[madprof]

I have no data of power / haat / coverage AREA, sorry.
The RadioDXer site that Kevin Vahey listed in the best source I know.
There is some info in the BRA (Boston_Radio_archives)
http://www.bostonradio.org/radio/bostonradio.html
under WVLI 56.

Zion  Hill   (NOT Mountain!) , on a USGS map (www.topozone.com)
is  ~2.5mi SES of I-128 / Cambridge St exit.
south of Lexington St, on the Winchester/Woburn line
2 towers on recent  USGS map  read 42:27:20, 71:10:44, (=summit?)  
and 42:27:19, 71:10:48