2 Way Antronix MMC1002H-B 5-1675 MHz MoCA 2.0 Splitter for Frontier Formerly Verizon Fios

Looks good, but steps 6 & 7 could be reworked to acknowledge the need to enable the gateway's built-in MoCA LAN bridge, as well as to test the MoCA link's connection and throughput before adding the WAP. (Step 6 could be wiring the MoCA adapter; Step 7 enabling the gateway MoCA LAN bridge and testing the link; Step 8 could be initial configuration of the WAP as an AP and testing; then connecting it via the MoCA link and final testing.) Re: linked parts... the linked splitter isn't a model recommended for use with MoCA; cutting to the chase, the 2-way splitters recommended: Antronix MMC1002H-B or Amphenol ABS312H MoCA adapter should work, but a Frontier FCA252 could be had for half the price off eBay -- and an FCA251 for a few $ less.

Ah, progress. My wife is getting 200mbps speed over WiFi now in her office. Is that good? What does your laptop read if hard-wired to the 3rd floor MoCA adapter, and then via Ethernet to the wireless mesh node? Is this near-equivalent to what the laptop sees when hard-wired to the primary router? 'gist: Wondering if the 200 Mbps is all you get, wireless or if the MoCA link is throttling throughput. It may be worthwhile looking into how to access your MoCA adapters' diagnostics pages, to review PHY rates (to assess MoCA connection quality). It's mentioned in the "recommended" link but these are the 2-way splitters recommended: Antronix MMC1002H-B or Amphenol ABS312H. The mystery of those extra coax lines remains. If you DO have luck locating their opposite end within the residence, you could add a secondary splitter in the outside service box sized to accommodate all the remote MoCA node locations ... keeping the modem location wired via an initial 2-way splitter. The 3+ node setup could then resemble >this<.

Add the following in the outside box. POE filter screws to the input port of splitter. You can add a larger splitter if you want to activate more outlets with moca. You'll need to add a 2-way splitter at the wall outlet at the gateway. One output port to the gateway and 2nd port to moca adapter. Get a 2nd POE filter for the gateway coax, attaching it to the splitter output port to the gateway (preventive) Moca adapter Gocoax.com POE filter https://www.amazon.com/GLP-1G70CWWS-Filter-Eliminate-Multi-Room-Interference/dp/B08HJ4F4D4/ 2-way splitter https://a.co/d/7Uc89vM RG-6 Coax Patch Cable, ~1ft long Get 2 pcs for interconnecting new parts.

See the following Re: splitters optimized for MoCA: MoCA-compatible splitter recommendations (… and warnings) Recommended 2-way splitters (optimized for MoCA); right-size per need, source however works: https://www.amazon.com/dp/B08CRQLG8T/ https://www.amazon.com/dp/B07PRYS8YZ/ (though it's unclear whether you require any splitters or filters)