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Hey guys I have a question...
I currently have comcast internet only. I would like to add a over the air Tv Antenna. Can I add a Diplexer to the current Coax cable line and attach the tv antenna? I'm not trying to get cable channels, I just want regular local channels. I was told since the frequencies are different from over the air channels...the diplexer would work. I'm trying to avoid running cable throughout the house. I want both internet and Tv antenna on the same coax line. Please help
No, a diplexer will not work. Consider an indoor amplified antenna instead.
I already have an out door antenna. I want to add that to the same coax line of the internet.
No, you can't use the same coax line. Cable is a closed radio (RF) system. Introducing unwanted RF (noise) into the system via a TV antenna will reek havoc on the cable system.
T1TO wrote: ... I was told since the frequencies are different from over the air channels ...
OTA channels overlap cable channel frequencies. See https://en.wikipedia.org/wiki/North_American_television_frequencies
Hello T1TO, I wouldn't add an antenna to the coax that is hooked to your modem. RF issues and interference will cause problems. I would separate the internet cable from the rest of the cable and hook your antenna up.