The CM3020 should work OK but it is much larger than the Winegard HD7694P suggested by Tower Guy because it covers VHF-Low, real channels 2-6, in addition to VHF-High and UHF.
It is the real channel that determines which antenna is needed.
VHF-Low, real channels 2-6
VHF-High, real channels 7-13
UHF, real channels 14-51
Aim the antenna at 48 degrees magnetic and try it with one TV at the bottom end of the 100 ft coax. If that is OK, then add a passive splitter and the other TVs and see how they do.
You should get down to CW, but maybe not ION.
WJAX will give you CBS. WFOX will give you Fox.
http://www.rabbitears.info/search.ph...pe=dBm&height=
If you don't get CW, add a preamp near the antenna, and the power inserter at the lower end of the 100 ft coax. Then add a passive splitter. If the signals are too weak for the other TVs, replace the passive splitter with a 3414.
A suitable preamp would be the CM7778 or the Antennas Direct Juice.
If the antenna is outside, the coax shield should be grounded with a grounding block that is connected to the house electrical system ground with 10 gauge copper wire for electrical safety and to reject interference. For further compliance with the electrical code (NEC), the mast should also be grounded in a similar manner to drain any buildup of static charge, but the system will not survive a direct strike.
