Wondered whether anyone has experience of using MoCA adapters for networking as an alternative to ethernet cables?
It looks to be a pretty good low cost alternative.
https://www.techreviewer.com/learn-about-tech/ethernet-over-coax-a-complete-guide-to-moca-adapters/
Ethernet comes full circle?
I guess if you happen to have coax going where you need Ethernet and don’t want to run extra cables they would be fine - is that the case for you?
Very edge case for non-US homes unless you already have coax run between the two rooms you wish to link.
The other problem you might have is the existing coax is the cheap TV only type which gets very lossy above 1GHz.
If you are thinking of running coax just for this, do yourself a favour and run quality Ethernet cable.
At ~£120 a pair for the transceivers I’m not sure what you are comparing the cost to?
You don’t need 2.5GHz on the cable - Eg 10G base T has a signalling frequency of 500MHz (though it does use all four pairs).
The costs of getting someone in to drill holes through metre thick walls, run the ethernet cabling and connect to RJ45 outlets.
But do you already have coax going exactly where you want Ethernet?
The three rooms in which I want network access have the coax outlets in exactly the right place.
If it’s been wired properly they will be in gaines/conduit so that you can pull ethernet cabling through to replace the coax.
If it’s been done with 25mm gaine (as it should be) then the coax & the ethernet can cohabit if needs be.
The next question is how the coax is routed and how it interconnects. I would think there’s a good chance all the points are connected somewhere to a splitter, might be in the loft.
If done to current normes it should arrive at the Coffret de Communication i.e. in the right place to be used for any purpose.
If… 
Were you in luck on that one Nigel?
Splitters are another problem as they add 3dB loss per port and the chance to add noise due to signal reflections. And every connection adds the chance of failure due to poor construction or moisture ingress.
A three way splitter would have a theoretical loss of 4.8dB from the input port to the output ports, in practice a bit higher so around 6dB. But if the three coax cables are connected to the output of a splitter i’m not sure what the loss would be to the other ports without knowing the circuit diagram and it might not remain balanced if you use an output port as input. Could be more at higher frequencies in the same way that TV coax is not really great at higher frequencies (RG 174 is about 1dB loss per metre at 1GHz).
As Badger says Nigel might be lucky enough that his coax is already in gaine and some cat 5 can be pulled through.
I’ve recently installed a pair of MoCA 2.5 adapters on an old TV Coax run and they work great. Our Coax cable must be around 40 years old and it’s not causing any problems at all. I’m getting just short of 2.5 Gbps throughput without any packet loss. We used GoCoax adapters which we purchased from Amazon: GoCoax MoCA Adapter 2.5 with Ethernet Port 2.5GbE MoCA 2.5 1 Port 2.5GbE Provides 2.5Gbps Bandwidth with Existing Coaxial Cables, White (Single, MA2500D) : Amazon.fr: Electronics
I’m very happy with the solution. The adapters cost 80 Euros each, which is good value to me.
I did consider pulling Cat 6 but MoCa just seemed to me a quicker and effective solution to deploy.
No luck so far.
The coax cable that I can easily see has just been strung along the attic ceiling.
I doubt very much whether any of it is in gaine, as some of the old wiring (now disconnected) done by previous owners was simply placed behind skirting boards and plaster. Knowing this house history, I suspect that the coax was installed 20 to 30 years ago so certainly not up to current norms.
Overall I suspect that - for point to links over a single (not too long) stretch of coax - these things “do what they say on the tin”, they even seem to support multipoint networks so I think they will be a modern take on 10base2
Nigel has three coax cables, not yet sure how they connect (but presumably no particular reason to suppose a MoCA system would not work).
I assume that you mean 2.5Gbps.
How have you measured throughput and packet loss?
I wasn’t aware of this system over coax and have just last week installed Cat6a throughout our house.
Just a standard Cat6a patch panel - from this I will connect to access points, outlets, security camera, gate and WiFi bridge to the gite.
Which is how it should be 
Yes, 2.5 Gbps. Late night typo 
I’m a Network Design consultant and I used my favourite tool - iPerf.
It’s great for getting the real throughput and performance of a network system.
My coax run is about 30 Metres or so…
Fair enough, right tool for the job
It’s just that 99.9% would not know what iPerf was, plus you need a computer at each end.
Very neat. I’m a bit lazy so my network is somewhat more “ad hoc”.
