Keeping TV and FM separate is preferred, particularly when one or more FM signals are strong and one or more TV signals are weak. You'll avoid a common source of interference if you keep the FM signals out of the TV system.
Also consider that RG-6 will have far less loss at VHF frequencies than at UHF. Per http://www.timesmicrowave.com/calcul...calculate#form you can expect less than 3 dB of loss in 100' of RG-6 at 100 MHz. If you need to amplify weak TV signals, the chances of a strong FM signal causing trouble goes up.
I would opt for an antenna designed specifically for FM. http://www.antennacraft.net/Antennas/AntennasFM.html
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If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)
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Last edited by GroundUrMast; 21-Sep-2013 at 3:28 AM.
Reason: added link
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