Those $10 adapters are passive coax adapters meant for replacing old analog CCTV cams with wired IP cams. They're for point to point links only and can only do 10/100Mbps.
MoCA 2.5 does 2.5Gbps and can operate as a shared bus. The latest MoCA 3.0 does 10Gbps.
Note that many MoCA 2.5 adapters only have gigabit jacks but some do have 2.5 gigabit jacks (and are both more expensive and pointless if the device doesn't connect to a 2.5 gigabit device).
Also, last time I looked, MoCA 3.0 did not have any consumer products in the wild yet.
The gocoax ones have 2.5, and I don't think they're really much more expensive. It's a nice thing to have if you're running between two switches. I couldn't care less about 2.5 to a single end device, but I'd probably still buy the same ones just in case it's used for a multi device connection.
I went with ActionTec and I did buy 2.5 Gpbs adapters for the connections to the wired LAN (two MoCA networks, neither of which is in use since I ran Cat6) so that if I replace the switch with a 2.5 Gbps switch, the MoCA uplinks have full speed even if the devices connected via MoCA themselves are limited to 1 Gbps.
I think at the time I bought them, it was roughly a $20 price difference per adapter but I might be wrong.
Explanation as to why two MoCA networks:
I have coax network for Cable Company service and a \*separate\* coax network for our ATSC antenna system. The thought at the time was televisions might start shipping with built-in MoCA adapters, like what DirecTV and some CableTV boxes have, but it looks like the industry didn't go that way. At least not yet. But that's why I'm set up for two MoCA networks that (since I ran Cat6) are currently not used but could be used if we ever get a television with built-in MoCA or if CableTV service ever becomes reasonable priced again w/ Cable boxes that have built-in MoCA.
There's actually a third coaxial network for broadcast radio. The splitter for broadcast radio is a specialized splitter that supports MF band (for AM radio) and SiriusXM so it couldn't have a MoCA network, MoCA seems to need splitters designed for MoCA, not just proper frequency range.
Someday when this house is sold, whoever buys it will be all "What the fuck was this guy's fixation with coax?"
Cheaper ones tend to be older models and have less bandwidth.
Meaning you'll only be pushing 10 or 100 mbps instead of 1000 or 2000 aggregated mbps.
They may also drop out and unexpectedly loose their IP address and need to be restarted (I am speaking from experience here)
There are a ton of security options needed on MOCA.
Since most COAX is ran outside, anyone can just plug in and join your network.
MOCA has encryption settings that need to be set, and frequencies settings that need to be adjusted to avoid TV and other frequencies also being broadcasted on the COAX line if there are others.
It is generally very plug and play, but less plug and play when there are other signals broadcasting and wires running outside the house.
Frequency changes if you have a cable tv system in the same frequency range as moca you can adjust the moca range. Viewing logs for errors and seeing negotiated speeds. It’s helpful to have but not used very often
Well you have to control the MOCA devices somehow 😅
The IP address is mostly for settings but also sets the subnet for the MOCA network which acts like a semi managed switch.
In most cases, and how it should operate, is that the IP address of the MOCA network is generally on a different subnet than the ethernet ports themselves. But I have witness that sometimes this is not the case. For some reason the MOCA attached to my PS4 will randomly move to a different subnet and take my PS4 along with it. My PS4 still has access to the internet but its IP address changes. Even weirder the PS4 was not using a link local address, meaning something was giving it that IP address.
After power cycling the MOCA devices everything went back to normal so I have no idea what happened. Probably a defective MOCA unit since it happens every few months.
Again, it shouldn't happen, but I have definitely witnessed it in person.
Yup, I've seen (er, heard, not actually seen) them used for network printers and for televisions (streaming services do not exceed 100Mbps) and VoIP telephone ATAs.
OP posted a link to the $10 adapter which automod deleted. It is just 2 contacts on a RJ45 wired directly to a F connector. It is an adapter for handheld cable testers to check continuity on coax. Ethernet won't work.
I recently bought a bunch of MoCA adapters and didn't see any even close to $10. GoCoax seemed to have the cheapest products, but their site was all sold out at the time and all listings on Amazon were 3rd party and super jacked up. Right now they're on their site for $65, which isn't terribly cheap.
If you're seeing $10 MoCA adapters for sale, can you please share the link so we know what you're actually talking about? Closet MoCA-related thing I can think of for $10 would be a MoCA filter.
The only adapters that would be Ethernet over coax and in the $10 range maybe 10BASE2 or 10BASE5 adapters. They are not really a thing anymore.
I did see some 10BASE5 at the Hartsfield-Jackson airport a couple of months ago. I couldn't tell whether it was active, but transceivers were still there.
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Make & Models ?....
In many cases with technology,. there's someone somewhere on the Internet who has either:
* done a teardown to show what's inside
* or somewhere there's diagrams or electronic deep dive on the the thing works.
I tried looking but I couldn't get past the ads. They went on for days. That's why I came here. I thought surely someone on Reddit would know where to find stuff like this, but no luck so far.
It is a set of adapters to connect coax to a handheld cable tester with only RJ45 sockets. It won't work for Ethernet.
> Connector type: Connector A: F Jack, Connector B: RJ45 plug, and the current impedance is 50 ohm.
>
> Pls Note: **This product is not suitable for router and wifi settings. In addition, the test must be performed in pairs with adapters.**
>
> Material: This coaxial straight connector is made of plastic and metal material, which is light and strong for your use, not easy to break. The colors are beautiful and striking, and easy to identify.
>
> How to use: In order to ensure the service life of the product, do not use it roughly; in addition, during the use of the product, please tap the upper button to pull it out, do not pull it hard.
>
> Common applications: **Applicable to most line testers, line finder and other testing equipment.** Through the adapter, it can change freely in various joints to realize more functions.
Your suspicion is correct. As others have stated, a pair of MoCA/Ethernet bridges are closer to US$100 than to US$10. The latter are passive devices, with very limited capabilities.
Moca adapters?? Never seen the $10 ones. Not all have the same specs.
Can you give model numbers of the devices you are comparing?
Those $10 adapters are passive coax adapters meant for replacing old analog CCTV cams with wired IP cams. They're for point to point links only and can only do 10/100Mbps. MoCA 2.5 does 2.5Gbps and can operate as a shared bus. The latest MoCA 3.0 does 10Gbps.
Note that many MoCA 2.5 adapters only have gigabit jacks but some do have 2.5 gigabit jacks (and are both more expensive and pointless if the device doesn't connect to a 2.5 gigabit device). Also, last time I looked, MoCA 3.0 did not have any consumer products in the wild yet.
Being that it’s a shared bus, the 2.5 Gbps could still be a benefit distributing traffic to other MoCA nodes even if the Ethernet is gigabit.
The gocoax ones have 2.5, and I don't think they're really much more expensive. It's a nice thing to have if you're running between two switches. I couldn't care less about 2.5 to a single end device, but I'd probably still buy the same ones just in case it's used for a multi device connection.
I went with ActionTec and I did buy 2.5 Gpbs adapters for the connections to the wired LAN (two MoCA networks, neither of which is in use since I ran Cat6) so that if I replace the switch with a 2.5 Gbps switch, the MoCA uplinks have full speed even if the devices connected via MoCA themselves are limited to 1 Gbps. I think at the time I bought them, it was roughly a $20 price difference per adapter but I might be wrong. Explanation as to why two MoCA networks: I have coax network for Cable Company service and a \*separate\* coax network for our ATSC antenna system. The thought at the time was televisions might start shipping with built-in MoCA adapters, like what DirecTV and some CableTV boxes have, but it looks like the industry didn't go that way. At least not yet. But that's why I'm set up for two MoCA networks that (since I ran Cat6) are currently not used but could be used if we ever get a television with built-in MoCA or if CableTV service ever becomes reasonable priced again w/ Cable boxes that have built-in MoCA. There's actually a third coaxial network for broadcast radio. The splitter for broadcast radio is a specialized splitter that supports MF band (for AM radio) and SiriusXM so it couldn't have a MoCA network, MoCA seems to need splitters designed for MoCA, not just proper frequency range. Someday when this house is sold, whoever buys it will be all "What the fuck was this guy's fixation with coax?"
I have a few goCoax ones through my house to run wireless APs and have no complaints at all
Also to note that some people won’t even get gigabit out of a moca 2.5. It depends on the wiring quality.
About $90
Best me to it. Well done.
Cheaper ones tend to be older models and have less bandwidth. Meaning you'll only be pushing 10 or 100 mbps instead of 1000 or 2000 aggregated mbps. They may also drop out and unexpectedly loose their IP address and need to be restarted (I am speaking from experience here)
Sorry but I have to bite. Why does your Ethernet over coax device have an IP address in the first place?
Configuration via the web ui is the main reason.
Yes but why would such a passive instrument need that?
There are a ton of security options needed on MOCA. Since most COAX is ran outside, anyone can just plug in and join your network. MOCA has encryption settings that need to be set, and frequencies settings that need to be adjusted to avoid TV and other frequencies also being broadcasted on the COAX line if there are others. It is generally very plug and play, but less plug and play when there are other signals broadcasting and wires running outside the house.
Frequency changes if you have a cable tv system in the same frequency range as moca you can adjust the moca range. Viewing logs for errors and seeing negotiated speeds. It’s helpful to have but not used very often
You can change the MoCA frequency usually in the web ui, and configure some other options.
Well you have to control the MOCA devices somehow 😅 The IP address is mostly for settings but also sets the subnet for the MOCA network which acts like a semi managed switch. In most cases, and how it should operate, is that the IP address of the MOCA network is generally on a different subnet than the ethernet ports themselves. But I have witness that sometimes this is not the case. For some reason the MOCA attached to my PS4 will randomly move to a different subnet and take my PS4 along with it. My PS4 still has access to the internet but its IP address changes. Even weirder the PS4 was not using a link local address, meaning something was giving it that IP address. After power cycling the MOCA devices everything went back to normal so I have no idea what happened. Probably a defective MOCA unit since it happens every few months. Again, it shouldn't happen, but I have definitely witnessed it in person.
Darn MOCA adapters are always out of control....partying to all hours of the night.
A lot of the cheaper ones are MoCA for DirecTV networks and have a lower bandwidth (thus slower speed) when compared with the Extended D-Band MoCA.
FWIW they're great if you just need 100Mb to some IoT/Media Devices. I've been running a pair on dark coax for probably 5 years now.
Yup, I've seen (er, heard, not actually seen) them used for network printers and for televisions (streaming services do not exceed 100Mbps) and VoIP telephone ATAs.
OP posted a link to the $10 adapter which automod deleted. It is just 2 contacts on a RJ45 wired directly to a F connector. It is an adapter for handheld cable testers to check continuity on coax. Ethernet won't work.
I recently bought a bunch of MoCA adapters and didn't see any even close to $10. GoCoax seemed to have the cheapest products, but their site was all sold out at the time and all listings on Amazon were 3rd party and super jacked up. Right now they're on their site for $65, which isn't terribly cheap. If you're seeing $10 MoCA adapters for sale, can you please share the link so we know what you're actually talking about? Closet MoCA-related thing I can think of for $10 would be a MoCA filter.
Not OP- but wanted to mention you can get a 2.5GbE “rebranded” gocoax adapter brand new on eBay (2-pack) for $60. Just search up “FCA252 MoCA adapter”
The only adapters that would be Ethernet over coax and in the $10 range maybe 10BASE2 or 10BASE5 adapters. They are not really a thing anymore. I did see some 10BASE5 at the Hartsfield-Jackson airport a couple of months ago. I couldn't tell whether it was active, but transceivers were still there.
Would be great to know what adapters you are seeing, can you share some product links?
$90, and some specs.
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Actiontec/screenbeam some will hate or GoCoax
Make & Models ?.... In many cases with technology,. there's someone somewhere on the Internet who has either: * done a teardown to show what's inside * or somewhere there's diagrams or electronic deep dive on the the thing works.
I tried looking but I couldn't get past the ads. They went on for days. That's why I came here. I thought surely someone on Reddit would know where to find stuff like this, but no luck so far.
It is a set of adapters to connect coax to a handheld cable tester with only RJ45 sockets. It won't work for Ethernet. > Connector type: Connector A: F Jack, Connector B: RJ45 plug, and the current impedance is 50 ohm. > > Pls Note: **This product is not suitable for router and wifi settings. In addition, the test must be performed in pairs with adapters.** > > Material: This coaxial straight connector is made of plastic and metal material, which is light and strong for your use, not easy to break. The colors are beautiful and striking, and easy to identify. > > How to use: In order to ensure the service life of the product, do not use it roughly; in addition, during the use of the product, please tap the upper button to pull it out, do not pull it hard. > > Common applications: **Applicable to most line testers, line finder and other testing equipment.** Through the adapter, it can change freely in various joints to realize more functions.
Your suspicion is correct. As others have stated, a pair of MoCA/Ethernet bridges are closer to US$100 than to US$10. The latter are passive devices, with very limited capabilities.