The Radio Shack FM filter is not suitable for your location. It will not attenuate WFDD on 88.5 MHz because it is designed to allow reception of CH 6 TV. It does well at the high end.
http://www.fmfool.com/modeling/tmp/c...9/Radar-FM.png
The Antennas Direct FM filter is just the opposite. It does well at the low 88 MHz end but not as well at the 108 MHz end.
The MCM does well at both ends.
You can use a HLSJ as an FM filter. It has low loss and attenuates everything below TV CH7 including the FM band.
