there are no quarantees for 70+ miles so you will need the best choices of antennas and as much height as possible.
separates will outperform combos
Therefore disagree with the antenna choices so far.
uhf KFOR-DT 4.1 NBC OKLAHOMA CITY OK 40° 6.0 27
uhf KWTV-DT 9.1 CBS OKLAHOMA CITY OK 40° 6.0 39 going to ch 9 in 2009
uhf KAUT-DT 43.1 MNT OKLAHOMA CITY OK 46° 5.8 40
uhf KETA-DT 13.1 PBS OKLAHOMA CITY OK 40° 6.0 32 going to ch 13 in 2009
uhf KOPX-DT 62.1 ION OKLAHOMA CITY OK 40° 6.0 50
uhf KOCB-DT 34.1 CW OKLAHOMA CITY OK 65° 4.8 33
vhf KOCO-DT 5.1 ABC OKLAHOMA CITY OK 62° 4.6 7 staying at ch 7 in 2009
uhf KOKH-DT 25.1 FOX OKLAHOMA CITY OK 73° 4.4 24
uhf KSBI-DT 52.1 IND OKLAHOMA CITY OK 40° 6.0 51
uhf KTUZ-DT 29.1 TEL SHAWNEE OK 139° 21.9 29
uhf KTBO-DT 14.1 TBN OKLAHOMA CITY OK 53° 5.2 15
I suggest the 91xg for uhf combined with the winegard ya1713 for the high band vhf channels combined with a cm7777 preamp. do not suggest the cm 3671 or the hd8200p or the antennacraft or anything else (including the cm4228).
91xg $80
ya1713 $40
total $120
compared to
cm3671 $125
hd8200p $169
cm7777 $56
the 91xg and ya1713 combination will outperform both the cm3671 and hd8200p and are less money. I would have suggested the hd8200p or cm3671 in the past but from first hand experiences the 91xg and ya1713 perform better.
The cm 4228 is a decent performer for uhf but is just so big and clumsy, present alot of windloading and difficult to manage, you can stack the 91xg and ya1713 on a shorter mast, and the cm 4228 is a risk for distant hi band vhf reception.
the ap 8275 is ok but the cm 7777 tends to perform better and is in a metal housing vs plastic.
the channelmaster quantum series antennas were discontinued around the year 2000.
the 91xg, ya1713, and cm 7777 are available at solid signal and would be my first attempt at your home.