I work in a environment where I need to use a filter or amplifier on the incoming cable signal outside the building that will not allow a return signal on the coax line. I will be bringing the cable into a locked metal box on the outside of the building and install this filter or amplifier then run the rest of the cable to the TV located inside the building. Does anyone know of a band pass filter or amplifier that I can buy that is truly one way and will not allow a return signal.
Maybe if you provide more info about your environment and the reason(s) you want/need the return signal blocked, someone may be able to address the question properly.
I work in a high security environment and it is a requirement if I am to bring cable TV in I must block the return path.
This will just be coax cable connected to a TV with no cable box. I have talked to the cable provider and they don't have
or sale any such filter or amplifier.
EDIT: Odds are you'll need a set top box too as most cable systems are ridding themselves of Analog and Clear QAM.
If I worked in your security department, I'd be more concerned about what was coming IN as opposed to worry about what's going OUT (TV only... not internet, that's understandable).
My very humble setup: