The tvfool report says resolved to city level only.
However , Hoople , ND. is only a few blocks north and south and east and west and looks real flat and the surrounding area looks real flat and your fathers reception tower is listed as 75 feet above ground , so at this point I do not see that a more accurate report would be a big help one way or the other.
If he lives in Hoople or is close to Hoople and the tower is not down in a low place or behind a hill , then I am making a recommendation for reception.
For reception of.
WDAZ channel 8 ABC and CW ,
KNRR channel 12 FOX ,
KCGE channel 16 PBS ,
KBRR channel 10 FOX ,
KVLY channel 44 NBC and Me-Tv ,
KGFE channel 15 PBS ,
KXJB channel 38 CBS.
Install a Winegard HD7698P antenna aimed at about 145 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
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Also install a Antennas Direct CPA-19 preamp.
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For one Tv connected use No splitter.
For 2 Tv's connected use a , HFS-2D , 2 way splitter.
Here are places to buy the antenna , HFS splitter and etc..
http://www.solidsignal.com.
http://www.amazon.com.
http://www.hollandelectronics.com.
http://www.winegarddirect.com.
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For coax that is exposed to the Weather/Water , use the coax that has the Compression type coax fittings on the ends of the coax , not the Old crimp type coax connectors.
To mke double sure that water does not get into outside connections and coax , wrap all , connectors , couplers , coax , and etc. with coaxseal ,
http://www.coaxseal.com.
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WDAZ and KNRR are both Very Strong Signal Strength at your location and Will Be received at the front angle and back angle of the HD7698P antenna with no antenna rotator.
The concentration/effort of reception is on the Digital Tv stations to the south east.
KXJB CBS is the weakest station so the aim of the HD7698P antenna is favored to that direction.
KCGE PBS is stronger then KGFE PBS so that means the HD7698P antenna can be favored to ward KXJB.
There are 2 FOX stations so the Strong fox KNRR will be received through the back angle of the HD7698P antenna so no requirement to receive KBRR FOX.
So the HD7698P antenna can be favored in the direction of KXJB.
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I say that a antenna rotator will not be required to receive the USA Digital Tv stations.
However , getting the correct antenna aim would be easier with a antenna rotator , as opposed to climbing up and down a 75 foot tower , unless you have one of those tilt over towers that will allow antenna installation and aiming standing on the ground.
Or you want to spend less money and climb up and down the tower if required to get the best aim direction.
If a antenna rotator is installed , then I recommend a Ham radio Heavier Duty type rotator , (then a standard antenna rotator) , be used do the size of the HD7698P antenna and the high winds out in north east ND.
The Heavier duty Ham radio rotator model number has slipped out of my mind and the paper with the model number is hiding from me so I will look it up and return.