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Old 30-Jun-2015, 10:56 AM   #12
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,747
Quote:
Tell me about the FM filter and where I would put one?
Since you don't have a preamp (I hope) at the antenna, you can put the FM filter, or two in series for extreme cases, just before the CM distribution amp. All FM filters are not equal, so I needed to look at the frequencies of your strongest signals. This filter would be suitable:
http://www.mcmelectronics.com/produc...-FM-88-/33-341



Antennas Direct makes one, but it's not quite as good at the high end for WKQC 104.7.
https://www.antennasdirect.com/store...on_filter.html

Radio Shack also makes one, but it will not reject the signals at the low end of the FM band effectively (WFAE 90.7).



You can, instead, use a HLSJ to block all signals below channel 7, including the FM band. Use the common and high ports.
http://www.solidsignal.com/pview.asp?p=zhlsj

Attached Images
File Type: jpg ADvsRSFMfilter.JPG (135.6 KB, 1261 views)
File Type: gif ADTechHLSJs3.GIF (22.5 KB, 1257 views)
File Type: gif MCM%20FM%20Trap%20Attenuation.gif (15.5 KB, 1194 views)
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Last edited by rabbit73; 30-Jun-2015 at 2:52 PM.
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