KB-G3-01

Turn Existing Coax into 1.6Gbps Ethernet with 2.5GbE Ports (G.hn Wave 2)

No rewiring. No WiFi lag. Pure speed over existing cable.

The Kiwee KB-G3-01 G.hn Wave 2 coaxial adapter turns your home’s underutilized coaxial cable into a high-speed ethernet network. Deliver 1.6 gigabits per second to any room—instantly.

Why G.hn Wave 2 Coaxial Adapters?

Tired of WiFi slowdowns? Existing ethernet too far away? Most homes already have coaxial cable running to every room—why not use it?

The KB-G3-01 is your solution: enterprise-grade G.hn Wave 2 technology in a compact, affordable adapter. Install in seconds. No setup required.

Key Benefits

Why Choose the KB-G3-01?

✓ Ultra-Fast Performance

2.5 gigabits per second over coaxial cable—that’s 2.5x faster than gigabit ethernet and 25x faster than legacy powerline adapters. Stream 4K video, download large files, and game online without lag.

✓ Zero Disruption Installation

No drilling. No walls torn open. No electrician visits. Just plug into your existing coax cable and ethernet port. Ready to go in seconds.

✓ Works with Existing Cable

Nearly every home built after 1985 already has coaxial cable running to bedrooms, living rooms, and offices. The KB-G3-01 leverages infrastructure you already own.

✓ TV Compatible

G.hn Wave 2 operates in a dedicated frequency band. Your cable TV, internet service, and this adapter coexist on the same cable without interference. Fully compatible with DVB-C (+258MHz), DVB-T2, and SAT TV—no signal degradation or channel loss.

✓ Enterprise-Grade Reliability

Built on the G.hn international standard (ITUT G.9960/G.9961). Used by ISPs and telecom companies worldwide. Battle-tested performance.

✓ Dual-Device Setup

Pair two KB-G3-01 adapters to create a high-speed link between two rooms. Daisy-chain multiple adapters to extend coverage throughout your home.

✓ Future-Proof Technology

2.5GE ethernet is the emerging standard for home networking. Future devices (gaming consoles, 8K displays, smart home hubs) will increasingly support 2.5G ports.2.5GE port is here to redefine connectivity for the modern home.

Use Cases Section

Perfect For…

Home Office & Remote Work
Eliminate video call buffering and upload delays. Get consistent 2.5 Gbps speeds for video conferencing, large file transfers, and cloud collaboration.

Gaming & Streaming
Ultra-low latency and unlimited bandwidth. Play competitive online games from your bedroom. Stream 4K content without WiFi interference.

Media Centers & Home Servers
Move large media files (4K video, RAW photos) to NAS drives at lightning speed. Backup terabytes of data in minutes, not hours.

Smart Home Networks
High-bandwidth foundation for cameras, smart displays, smart speakers, and IoT devices. No WiFi congestion. Pure wired reliability.

Multi-Room Connectivity
Connect distant rooms without expensive ethernet runs. Bridge your garage, guest house, or addition to main network.

Cord-Cutting Streaming Households
Replace traditional cable with streaming services. Use the same coax for fiber/video delivery—and now high-speed data too.

Tech Specs

INTERFACES:	– One 10/100/1000/2500 Base T Ethernet LAN – One G.hn Coaxial Jack （2MHz~200MHz） – One TV Coaxial Jack （250MHz~2150MHz） – One Pairing button – One Led ON/OFF button – One Reset Push button
NETWORK SIZE:	– Up to 16 Devices (including NC)
CHIPSETS:	– MaxLinear 88LX5153A0 – MaxLinear GPY211
REGULATORY:	– FCC, CE – UL

User Manual

English User Manual

Other languages user manuals are available below:

Firmware

v7.12 r877+16 Based on Maxlinear SDK Spirit HN 7.12 SR5

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FAQ

► 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 from this adapter?

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 (future generations), smart TVs, network storage (NAS), servers. Standard gigabit devices work too (at 1 Gbps).

► Can I use this with my existing WiFi 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 WiFi network, reducing congestion and improving WiFi 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. They act as a network bridge.

► How is this different from powerline adapters?

Coaxial adapters (like KB-G3-01) are faster (2.5 Gbps vs. 500-1000 Mbps), have lower latency, and use dedicated cable rather than electrical wiring (which has more interference and variability). Coax is more reliable.

► 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 (standard network security). G.hn itself 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 (starts ~258 MHz, above G.hn 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 (used in US, Europe, many places) uses low frequencies (5–85 MHz or more) that overlap G.hn’s 2–200 MHz. Put your modem right at the entry point, then use adapters only for inside-home wiring.

► Why no full speed or no connection—what do 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). Test: use wideband splitters (5–1000 MHz), no amps in the low band, good cables.

► Do SAT multiswitches work with G.hn? (Mostly Europe/satellite homes)

Yes if they pass 5–200 MHz between outputs (most do)—common for satellite TV setups in Europe/Middle East.

► Can I plug the adapter straight into coax cable, no wall socket?

Yes, direct connect works fine.

Tutorial Videos

Check Firmware and Link Rate for Stable Performance

Compare 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 (PoE+)	No	No	Yes	No
Latency	1 ms (point-to-point)	3-4 ms	3-4 ms	3-4 ms
Max Throughput	Up to 1.6 Gbps	Up to 2.5 Gbps	Up to 2.5 Gbps	Up to 2.5 Gbps
Compatibility	DVB-T2 (470-694 MHz), DVB-C (258-860 MHz), Satellite TV G.hn Wave 2 devices	DOCSIS, DVB-T2 (470-694 MHz), DVB-C (110-860 MHz), MoCA D Band	DOCSIS, DVB-T2 (470-694 MHz), DVB-C (110-860 MHz), MoCA D Band	Satellite TV, MoCA E Band
Not Compatible With	DOCSIS, MoCA	Satellite TV, MoCA E Band	Satellite TV, MoCA E Band	DOCSIS, DVB-T2 (470-694 MHz), DVB-C (110-860 MHz), MoCA D Band
Typical Use Case	Single device, UHF TV, Satellite TV homes, free/dark coax	Multi-device, high-speed LAN	Single device, PoE-powered devices	Satellite TV homes, multi-device LAN
Installation	Plug & Play	Plug & Play	Plug & Play, PoE simplifies power	Plug & Play