What does Wi-Fi repeater mean?
A Wi-Fi repeater extends coverage by receiving and retransmitting wireless traffic. Its useful performance depends on both its connection to the router and its connection to the client. Strong signal from the repeater does not guarantee a strong end-to-end path.
Why it matters
Repeaters differ in radio design and operating modes, so avoid a universal speed claim. Some products also support wired access-point operation, which changes the backhaul arrangement. Test the actual installation with the same stream and device. If the repeater sits at the edge of router coverage, moving it toward a better upstream signal may help more than moving it toward the television.
A practical example
A screen may show full bars after a repeater is added yet still buffer because the repeater's own upstream link is unreliable. The displayed bars describe only the nearby connection.
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Related terminology: Wi-Fi Multimedia, Wi-Fi roaming.
For practical setup and troubleshooting, browse the journal or support guides.