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Antenna in on HLSJ high side, out on combined, cap low side?
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That sounds right to me.
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Originally Posted by ADTech
Kitz would need to provide you with a graph of the FM filter's performance, a photo reveals nothing about the filter's parameters. Sure, I can test it if you'd like. Haven't seen a sample of that model.
I'd just throw a HLSJ (cap the L input with a terminator) on the front end of the pre-amp and be done with it since you don't have any low-VHF to worry about.
FM usually causes problems on high-VHF first, but an amp, in the presence of any strong signal, can go into compression and cause weak signals to be lost. It's simply better to keep the strong signals out of the amplifier in the first place.
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I agree with ADTech.
I do have a minor concern about HLSJs. If you put one in front of a UHF amp, will the high side, which is a high pass filter, introduce any significant insertion loss for the high end of UHF? It was never really designed for that task, and the specs of some say passes 170 to 600 MHz.
http://www.hollandelectronics.com/ca...-Diplexers.pdf
http://www.nsccom.com/productpdfs/btl/dsv.pdf
ADTech:
Please comment on my concern.