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Is fm trap and single band filter the same thing?
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Yes, if you mean FM Band Rejection Filter. The FM trap/filter is to weaken WMAU-FM which is, at -7.4 dBm signal strength, a threat to the reception of CBS on channel 12. The Juice preamp does not have an internal FM filter, so you would need to add one or two in series with the CH 18 bandstop filter between the antenna and the input to the preamp.
Juice amplifier specs
AD FM Band Rejection Filter
Some other preamps do have an internal FM band rejection filter, like the CM 7778, but they are probably not as resistant to overload as the Juice.
A good alternative to an FM band rejection filter is a HLSJ (VHF-High-VHF-Low-Separator-Joiner) which attenuates everything below CH 7, including the FM band, by 25 dB. It has a low insertion loss because it uses a high-pass filter between the high and common ports.
Holland HLSJ
The coax should be grounded with a grounding block that is connected to the house electrical system ground with 10 gauge copper wire for electrical safety. 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.