Instructables
Picture of How to set up a coax (MoCA) network
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Like many existing homes, my parents' home has a limited wired Ethernet network and a wireless (Wi-Fi) network covering the rest. My mom, who has rented Netflix DVDs for a while, wanted to start streaming her favorite shows in the family room and bedroom rather than waiting for disks. Prior to me coming home for Labor Day, they set up an Apple TV on the wireless network. I recommended that they switch to a wired network connection for a faster and more reliable solution.

My parents' Ethernet network is limited to the home office and a small bedroom directly above it. With the family room and bedroom on the opposite side of the house, expanding the wired Ethernet network conventionally would have been labor intensive. Fortunately, there's a wired networking solution that allows high speed Ethernet to bridge over the existing coax cable (cable TV) network in the home. It's called MoCA.

Before I get into the installation, the next step will cover a quick overview of the coax networking technology. 
 
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Step 1: What is coax networking (MoCA)?

A coax network is an extension of the existing home network onto the coax cable network in the home. Just like Wi-Fi is the ubiquitous standard for wireless home networks, MoCA is the nearly ubiquitous standard for coax networks. MoCA stands for the Multimedia over Coax Alliance. If your cable service provider offers a service called Multi-Room DVR, they are almost certainly using MoCA to enable it.

The current standard for MoCA is 1.1 and the equipment used in this project is standards compliant. 

A MoCA network is broadcasted roughly between 500MHz and 1.5GHz (1500MHz). The technology is designed so that it does not interfere with the broadcasts of traditional cable TV service. However, satellite TV, which runs on different spectrum, is not compatible with the 1.1 MoCA standard. For their respective multi-room DVR services, they use a proprietary coax networking technology. The MoCA 2.0 standard in development is expected to work for all service providers. 

To get the most detailed and updated information about this technology, visit the MoCA website.
http://www.mocalliance.org/
Mr.M12 days ago

I have the actiontec ECB2500C MoCA network adapter and the WCB3000N Wireless Ethernet Coax Bridge.

In my home office downstairs:

Adapter: coax from the wall to in port. the out coax is to the modem and the ethernet is to the wifi router . It shows power and ethernet light but coax light is not illuminated.

Bridge: in upstairs room coax from the wall is to the coax port (only one) and of course power. It also shows power light and 2.4 and 5 ghz signal illuminated but no coax light.

Should I put the splitters coming off the coax cable from the wall on both???

Right now with my set up I am getting no internet signal out of the bridge. My wifi router and desktop in my home office down stairs work fine

ravin108 (author)  Mr.M12 days ago
Mr. M1,

If I'm understanding your setup, you need to have a wired Ethernet source entering the adapter though a twisted pair Ethernet cable.
The MoCA adapter transmits that Ethernet signal from the twisted pair cable network to the coax cable network.

If you have that squared away, I do recommend using standards compliant splitters if you have them and the extra patch cable.