Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Has anyone tried this with a HD Antenna?
Document: This is a great product that does exactly what it says it will do. I tried it in two locations. First at the point where the cable connection came into the house - which wasn't very effective. Next, I tried it attached to the cable box. Buzz problem solved. I would recommend this to anyone that has a buzzing sound in their sound system connected to a cable box.
Finally, my HD cable is exactly what it should be. I do not notice any diminished audio or video quality, and the on demand and HD channels work perfectly fine. Well worth the $25 to band-aid the problem and bypass dealing with the frustrations of an incompetent cable company. This is an excellent product, I highly encourage anyone experiencing a ground loop issue to make this your painless first line of troubleshooting.
No more Hum Bars and the TV picture is great. I would recomend them as a good, quick, cheap, fix for anyone with A/C line Hum Bars.
The name makes this product seem to be only for use with cable TV systems. The part of the name that is most important, though, is "Ground Loop Isolator." I purchased one to do exactly that for an FM antenna lead in. My house has external antennae for TV and FM, plus an input from AT&T; U-verse.
I have dealt with audio hum when using my PS3 and I've had a difficult time getting rid of it. I purchased a little cheater socket adapter and that made it better, but it was still noticeable. I am happy to report that this solved it completely.A must have for anyone with a PS3 that's having that annoying hum, or as I've read from some others, bars scrolling on your TV. You won't have to unplug your coax cable every time you want to use the PS3 in peace!
When "Cable"; "DSL" telephone modems and some outdoor antennas are connected to your PC or audio system a ground loop can develop. This happens when your AC power system's earth ground and your "Cable" "DSL" or "Antenna" have an earth ground at a physical point removed from where your AC power provider grounded your breaker box. If you notice a "hum" or "buzz" in your audio (computer, home theater, etc.) a ground loop may be the problem.
I tried to find something like this locally but had no success, but thanks to amazon I am a happy camper :)
I recently got FIOS TV installed at my apartment. (We previously just used over the air antenna). As soon as the box was installed, I noticed a significant hum. After doing a little research, I was convinced that the hum was from a ground loop (the cable snakes probably 100-200 feet between our box and the transceiver on the apartment wall). I took a chance on this item, and it works perfectly. I have not noticed dropped channels on FIOS as another reviewer mentioned.
tried to connect my tivo to my receiver via hdmi and got this hum which would only go away when i disconnected the coax comcast cable. really depressing, but luckily i discovered this and now silence is silent. thumbs up here !! !
We must have gotten a bad one because we plugged this between our main line and splitter replacing a Tributaries version in the same position with no other changes to the system. Could hear the ground loop hum through the system as if it wasn't there at all. Also tried it on the branch line to the effected TV, but still could hear the 60Hz hum.
Answer: No