MoCA (Ethernet over coax / TV cable)
Also searched as: moca · ethernet over coax · coax ethernet · moca adapter · tv cable ethernet · multimedia over coax · coaxial ethernet
What it means
MoCA turns the round, screw-on coaxial TV cabling in your house — the kind used for cable TV and cable internet — into a wired network link. A pair of MoCA adapters, one by your router and one in the room with the coax outlet you want to use, gives you an Ethernet port at the far end over that coax.
More detail
Where the right rooms already have coax outlets, MoCA is usually the most reliable no-new-cable choice: very stable, low latency, close to true Ethernet, and generally steadier than powerline because coax is shielded and shrugs off the household electrical noise that powerline rides on. The catches are practical — you need coax outlets in both rooms (the router end and the PC end) on the same coax run, and if you have cable internet you normally add an inexpensive 'PoE' MoCA filter where the line enters the house so the signal stays in your home. …
In the Blackbook
The deeper explanation continues inside the app. The Blackbook publishes its verdicts here — the full write-ups stay in the book, on your rig, next to your own measurements.
The Compy Blackbook holds 191 graded entries like this one, judged against your hardware — and every change it does make is reversible, with the receipt to prove it.
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