Well there are some here in Minneapolis that cut their power 90% and the FCC expected the same coverage according to the maps

KARE 11 was at 316Kw on analog...digital 27.1kw...same height
KMSP 9 was at 316kw on analog...digital 21k watts

in the case of Minnesota, all stations on VHF dropped way down (more than 90%)...all were 316kw analog signals
KAWE 9 PBS...14.5kw
KCCO 7 CBS...15.6kw
KCCW 12 CBS 14.3kw

and the FCC thought they would GAIN folks
http://www.fcc.gov/dtv/markets/maps_...St_Paul_MN.pdf

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Winegard 76cm dish, SG2100 motor, Sadoun dual KU LNB/DirecTv dual..... Fortec 6 foot dish with GeoSatPro dual C-Band LNB aimed at 99W... Primestar 84e aimed at 91W.... WSIDigital 4 foot dish with Sadoun dual LNB aimed at 105W with 2nd LNB for 101W.... GeoSatPro 36" dish, SG2100 motor, Sadoun dual LNB
Coolsat 5000 on motorized....AZBox HD Elite on 99,motorized,105....Viacast DSR1500 on 99....GeoSatPro DSR200c on 2nd motorized.... Directv D15 DVR on 101W.... Pansat 1500 to aim dishes.... few receivers not set up yet
Other 6 foot Fortec dish with GeoSatPro dual C-Band LNB "ghetto moved" to various C-Band satellites
Third 6 foot Sadoun dish with GeoSatPro Prime Focus KU LNB on it for maximum rain fade combatting