HDMI over ethernet extender anyone?

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Anyone have success using an hdmi extender (balun) that sends the hdmi over cat6/cat7?

I have one that has a hdmi pass thru which should allow me to run a duplicate screen 100ft away from primary screen.

Problem is that the resolution is wrong when using it. Windows/Rise thinks it is now 1024 x 768 (I assume that is the Windows fall back default).

I'm wondering if another brand would work or it's just not doable.

Has anyone done this successfully? What brand/model extender are you using?

Thank You
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Scott Williams

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Posted 2 years ago

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You should have a look at this unit - it works over the LAN and allows you to Extend or Clone your Primary screen:
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Robert Schoneman, Champion

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Scott, there's a couple issues with HDMI over CATx cabling (baluns, range extenders, etc). First is one of bandwidth. If you're only using CAT5 cabling there's insufficient bandwidth for a full 1080p connection. 1920x1080@60Hz uses about 4Gbit/s and that's beyond the bandwidth available on low-grade cabling. The other issue is the DDC channel in HDMI. The DDC channel carries both the EDID data and HDCP. These are bi-directional connections. Many inexpensive baluns and range extenders don't have bi-directional communication. 

That's a lot of words to say: get a range extender from a good brand (Extron or Kramer) and use either their recommended cable or high-spec cable (CAT6, shielded if you can). We use the Extron DTP systems and they've been rock solid reliable all the way out to the limits of their specs. 
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Scott Williams

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Thank You,
The cable is Cat7 so hopefully that will be okay I don't think it is shielded though but not sure. I will have a look at the Extron DTP.

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Ray G Murphy

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The ST121HDT4P HDMI® over CAT5e/6 Video Extender kit lets you extend HDMI video and audio by up to 330 feet (100 Meters) over a single Cat5e/6 cable. For added versatility both the extender and receiver can be powered by the same single power source using Power Over Cable (POC). This versatile HDMI extender also allows you to extend infrared for an IR Remote Control, and 2 Ethernet LAN connections over the same Cat5e/6 cable. Check this out for more details.
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Robb, Official Rep

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Interesting! Thanks for sharing this Ray!

Have you tried one of these yourself? How did it work?