G.hn Wave 2 Coax Adapter – 2.5GbE Ethernet Port

G.hn Wave 2 — 2.5GbE Ethernet Port

Turn Unused Coax Into
1.6 Gbps Ethernet.

KB-G3-01 — plug into any coax outlet and get wired speed in seconds, no rewiring, no electrician.

Most homes already have coax running to every room. The KB-G3-01 turns that dormant cable into a fast, stable wired connection — perfect for streaming, gaming, and remote work, even in homes with satellite TV or UHF antennas where MoCA D-Band can't be used.

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★★★★★ 4.7 stars
KB-G3-01 G.hn Wave 2 coax to ethernet adapter
1.6 Gbps Real Throughput
1 × 2.5GbE Ethernet Port
<1ms Latency
Plug & Play Zero Config
G.hn Wave 2 ITU-T Standard
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Kiwee KB-G3-01
G.hn Wave 2
1.6 Gbps
LAN — 2.5GbE
Coax IN

One coax jack. One Ethernet cable. Done.

Plug the KB-G3-01 into any coax outlet and connect it to your router, PC, NAS, or access point with an Ethernet cable. No drilling, no new wiring, no software to install — it links to your home's existing coax network automatically and starts pushing data the moment it's powered on.

⚡Plug & play setup
🔧No electrician needed
🏠Uses existing coax
KB-G3-01 installation diagram

Why People Choose the KB-G3-01

Real 1.6 Gbps throughput

Up to 2.5x faster than gigabit Ethernet and far more consistent than Wi-Fi, even through walls and floors.

Works where MoCA D-Band can't

Operates in a dedicated 2–200 MHz band, fully compatible with DVB-C, DVB-T2, and satellite TV — no interference, no lost channels.

Sub-1ms latency

Point-to-point latency rivals direct Ethernet — ideal for competitive gaming and video calls.

Zero-disruption install

No drilling, no electrician, no configuration. Connect coax and Ethernet, and you're online.

Built on an open standard

ITU-T G.hn Wave 2 (G.9960/G.9961) — the same technology ISPs and telecoms deploy worldwide.

Scales with your home

Pair two adapters for a point-to-point link, or daisy-chain up to 16 devices to extend coverage room by room.

Typical setup: router on one end, the KB-G3-01 wherever you need a wired connection — both running at full 2.5 GbE from the same coax outlet.

Why G.hn Wave 2

Built for satellite TV
and antenna homes

If MoCA's D-Band would clash with your TV signal, the KB-G3-01 gives you a wired-quality connection that leaves your satellite or antenna signal untouched.

💼
Home OfficeNo more dropped video calls
🎮
Gaming & StreamingWired-grade latency
💾
NAS & BackupsMulti-gig file transfers
📡
Smart Home BackboneWired link for cameras & hubs
🏠
Multi-RoomBridge garages & additions
KB-G3-01 use cases

Engineered, not just assembled

MaxLinear 88LX5153A0

Industry-leading G.hn SoC paired with a 2.5G PHY for stable, full-rate links.

iperf-verified

Throughput validated with real iperf testing — the speeds we publish are the speeds we measure.

<1ms Latency

Point-to-point latency rivals direct Ethernet, ideal for real-time applications.

Up to 16 nodes

Scale a single G.hn network across the whole home, including the network coordinator.

Common questions before you buy

"Will this interfere with my TV signal?"

No. G.hn Wave 2 runs in a dedicated 2–200 MHz band, fully separate from cable TV, satellite, and broadband. Everything coexists on the same cable.

"Is setup complicated?"

No software, no drivers, no configuration. Connect coax and Ethernet, and it works immediately.

"What if I'm not happy with it?"

30-day returns through Amazon, plus a 1-year warranty if anything goes wrong after that.

Ready for a faster, more reliable connection?

Stop fighting Wi-Fi dead zones — get a wired-grade connection from coax you already have.

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Tech Specs

Interfaces One 10/100/1000/2500 Base-T Ethernet LAN
One G.hn coaxial jack (2–200 MHz)
One TV coaxial jack (250–2150 MHz)
One pairing button
One reset button
Standard ITU-T G.hn Wave 2 (G.9960 / G.9961)
Max Throughput Up to 1.6 Gbps
Latency <1 ms (point-to-point)
Network Size Up to 16 devices (including network coordinator)
Chipsets MaxLinear 88LX5153A0 · MaxLinear GPY211
Regulatory FCC, CE, UL

Compare Kiwee Adapter Models

Model Number KB-G3-01 KB-M3-02 KB-M3-03 KB-M3-02E
Standard ITU-T G.hn Wave 2 MoCA 2.5 MoCA 2.5 MoCA 2.5
Frequency Band 2–200 MHz D Band (1150–1650 MHz) D Band (1150–1650 MHz) E Band Extended (400–900 MHz)
Ethernet Ports 1 × 2.5GbE 2 × 2.5GbE 1 × 2.5GbE 2 × 2.5GbE
Power over Ethernet No No Yes (PoE+) No
Max Throughput Up to 1.6 Gbps Up to 2.5 Gbps Up to 2.5 Gbps Up to 2.5 Gbps
Best For Satellite TV & UHF antenna homes, free/dark coax Multi-device, high-speed LAN Single device, PoE-powered gear Satellite TV homes, multi-device LAN
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Frequently Asked Questions

Will this interfere with my TV service?
No. G.hn Wave 2 operates in a dedicated frequency band separate from cable TV and broadband internet. All services coexist on the same cable without interference. The KB-G3-01 is fully compatible with DVB-C (+258MHz), DVB-T2, and SAT TV — with no signal degradation or channel loss.
What real-world speeds can I expect?
Real testing with iperf shows consistent 1.6 Gbps speeds under optimal conditions.
How many adapters can I connect?
You can connect up to 16 adapters to the same coaxial network. Check your coax cable quality for best results across multiple adapters.
Is setup complicated?
No. There's no software, no drivers, no configuration. Plug and play — it works immediately.
What devices are compatible?
Any device with a 2.5GE Ethernet port: laptops, desktops, gaming consoles, smart TVs, NAS, servers. Standard gigabit devices work too (at 1 Gbps).
Can I use this with my existing Wi-Fi router?
Yes. Connect the KB-G3-01's Ethernet port to your router's WAN or LAN port. This creates a wired backbone for your Wi-Fi network, reducing congestion and improving Wi-Fi performance throughout your home.
Is there latency? Will my games lag?
No. G.hn coaxial connections have <1ms latency — nearly identical to Ethernet. Perfect for competitive gaming, video calls, and real-time applications.
Does it work in apartments with shared coax?
Yes, but signal isolation depends on your building's coax infrastructure. Modern apartment buildings with isolated coax per unit work perfectly. Older buildings with shared trunk lines may have reduced performance.
Can I use two adapters in different rooms to extend my network?
Yes. Install one KB-G3-01 in room A (connected to device A) and another in room B (connected to device B). Both adapters link over your coax network at 1.6 Gbps, acting as a network bridge.
How is this different from powerline adapters?
Coaxial adapters like the KB-G3-01 are faster (1.6 Gbps vs. 500–1000 Mbps), have lower latency, and use dedicated cable rather than electrical wiring, which is more reliable and less prone to interference.
What about security? Can neighbors access my network?
In single-family homes with isolated coax lines, there's no risk. In apartments with shared coax, traffic is isolated at the IP/network layer. G.hn itself also supports encryption for additional security.
Does this work with fiber internet?
Yes. Fiber ISPs use coax for TV/video delivery in many areas. The KB-G3-01 can operate alongside fiber internet on the same cable.
Can I use the adapters with cable TV like DVB-C?
Yes, in Europe/Asia with DVB-C TV (starting around 258 MHz, above G.hn's range) — just add a 258 MHz high-pass filter at your main amp or first splitter to block any clash. Check your country's cable TV start frequency.
Can I use the adapters on the same cable as cable internet (DOCSIS)?
No — cable internet uses low frequencies (5–85 MHz or more) that overlap G.hn's 2–200 MHz range. Put your modem right at the entry point, then use adapters only for inside-home wiring.
Why no full speed or no connection — what should I check first?
Your coax path needs to pass 2–200 MHz clearly; total signal loss under 35 dB gets max speed (~1.6 Gbps). Use wideband splitters (5–1000 MHz), avoid amps in the low band, and check for good cable quality.
Do SAT multiswitches work with G.hn?
Yes, if they pass 5–200 MHz between outputs — most do. This is common for satellite TV setups in Europe and the Middle East.
Can I plug the adapter straight into coax cable, no wall socket?
Yes, direct connection works fine.

Setup & Tutorial Videos

► Check firmware and link rate for stable performance

If issues arise, check the adapter's firmware version and link rate.

📘 User Manual & Firmware

Download the manual in your preferred language

📘 English User Manual

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