Anyone seen these??? HDMI over coax :)

Forums › Home Theatre (including HTPC and EPG Collector) › Anyone seen these??? HDMI over coax :)

tangerz

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#91468 13-Oct-2011 21:31

Was just browsing around looking for wireless HDMI transmitters and found these...

http://www.aavara.com/en/products/hdmi.php?id=15

Looked around further and found a few places selling them. Sure ain't cheap but could be just the ticket for someone with a house pre-wired with coax only and who can't run any new cables.

Had thought of the concept a few years ago and thought it'd be a good idea but didn't find anything last time I searched. Guess someone else thought it was a good idea too :)

richms

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#534012 16-Oct-2011 17:32

Any idea on local pricing of them? And will they work with a currently wired with splitters RF network or do they only work point to point?

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tangerz

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#534071 16-Oct-2011 20:26

Can't find anything on them in NZ. Only a few places in the UK like

http://www.keene.co.uk/electronic/aavara/hdmi-over-single-coax-cable-system/PCE122.html

Like is said, at £433 (around NZ$870 or so at the moment), they ain't cheap!

Looking at the setup diagrams, seems like they are point to point, (couldn't see any splitters), but each receiver acts as a splitter/repeater/extender, ie coax into receiver, hdmi and coax out.

richms

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#534186 17-Oct-2011 09:58

Ouch. I guess that its such a small market they have to.

Im still waiting on the cousin to come over with the digger so I can get my cat6's to the garage to see how the cheap HDMI over 2 cat6 units I bought off ebay work. Even paying for a ditch would cost less than those adapters would, plus I would lose the use of the coax to take the modulated CCTV cams.

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#534193 17-Oct-2011 10:12

At that sort of price you'd be better off looking at HDMI over IP adapters and HCNA gear to run ethernet over coax. I've been playing with some HCNA gear for a deployment and have been very impressed with it, and even adding up the cost of both it would probably be fractionally cheaper than these units.

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#534197 17-Oct-2011 10:22

Hmm, HDMI over IP, there's an idea that might solve a friend some hassles. Where can I find more info on them thats not marketing BS?

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#534199 17-Oct-2011 10:48

Just to make everyone aware, often these HDMI over X adapters are a little handicapped.

For example the HDMI over single cat5 typically compresses the signal.

HDMI over coax doesn't do 3d

etc etc... just make sure you check specs

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richms

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#534214 17-Oct-2011 11:20

Well the cheap HDMI over 2 cat5's seem to be crippled in that they die if you get the cat5's the wrong way around into them. Something to be aware of. To be honest I am surprised that they even had electronics in them for the price that they were ;)

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#534231 17-Oct-2011 11:53

richms: Hmm, HDMI over IP, there's an idea that might solve a friend some hassles. Where can I find more info on them thats not marketing BS?

I've never played with any but have played with a quite a number of HCNA / HPNA devices, and am currently in the process of probably rolling out a relatively large scale HCNA deployment.

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#534237 17-Oct-2011 12:01

HDMI over ethernet (not cat5 cables, actual ethernet frames etc. or IP layer) would basically solve all my problems. What gear out there does that?

Other question, is it possible to inject your own "freeview" channel into coax from an HDMI source?

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#534265 17-Oct-2011 12:53

I have only seen digital modulators for SOHO type use in ATSC versions. There are some larger ones that will even strip channels out of a mux and reinsert it etc for DVB but they were in the low 10's of k$ when I looked. I would possibly go to $500 to be able to make my own DVB mux and distribute it, no way over 10k ;)

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#534272 17-Oct-2011 13:09

Zeon: HDMI over ethernet (not cat5 cables, actual ethernet frames etc. or IP layer) would basically solve all my problems. What gear out there does that?

Other question, is it possible to inject your own "freeview" channel into coax from an HDMI source?

When I was looking at some options around 6 months ago for DVB-T encoding for a project the cheapest hardware was around NZ$3k

There are a number of companies who make HDMI over IP gear, however I don't know anybody who has used it.

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tangerz

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#534277 17-Oct-2011 13:25

Zeon: Other question, is it possible to inject your own "freeview" channel into coax from an HDMI source?

Was looking for a way to do something similar to this myself at one stage. As I live out of DVB-T coverage, was looking for a way to take DVB-S and DVB-S2 signals and re-mux them to DVB-T for transmission over my existing coax cables and the ability to use the TVs inbuilt Freeview tuners instead of having to have a STB for each TV.

Only solution I found was a headend unit, the Triax TDX. Basically will take any input (satellite/terrestrial/cable/av/ip) and distribute it as any/all of PAL/QAM(cable)/COFDM(terrestrial)/IPTV. Never saw a price on it but guessing it's gonna be $$$$$$$$. More suited to apartments or motels I'd think!