Try this connections first before using an amplifier.
Connect a 2 way splitter to the coax that comes from the antenna.
One output port of the 2 way splitter will connect to the longest coax run that goes out to a Tv location.
The other output port of the 2 way splitter will connect to a 4 way splitter.
The Digital Tv stations signals in the Green reception zone of the tvfool channel list are very strong signal strength.
And the Tv stations down to W50Ci-D UHF channel 50 should be distributed through to the 5 Tv locations with no problem.
If , as in if , some channels in the Green reception zone of the tvfool channel list are not received well at some Tv locations that are connected to the 4 way splitter then install a Channel Master CM3414 distribution amplifier in place of the 4 way splitter.
http://www.channelmasterstore.com.
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If there is Any Cable Tv delivered service , cable tv , cable internet , cable phone , or any other type or kind of pay cable delivered service or services on any of the coaxes , Do not connect the antenna system on to the same coax as Any cable tv service is on.
Any type or kind of cable service must be on a Separate coax.