HDMI Extender over Cat5/Cat6 - 165ft HDMI Transmitter and Receiver

In this review the focus is on a straightforward HDMI extender kit that sends full HD video and audio over a single network cable. The gernie HDMI Transmitter and Receiver is aimed at anyone who needs to move an HDMI signal across a room, warehouse or control center without running long HDMI cable runs. The single biggest reason to buy is its practical long-distance capability: it reliably transmits 1080p60 and synchronized audio up to the listed distances using a single CAT5/6 cable and a plug-and-play setup that needs no extra HDMI patch cords between transmitter and receiver.

Key Features

• Long distance AV over one cable: Sends video and audio up to 165ft/50m over a single CAT6/CAT7 cable and slightly shorter over Cat5e, reducing cabling complexity for long runs.
• Full HD 1080p60 support: Outputs 1920x1080 at 60Hz and is compatible with 3D and lower resolutions so it handles most HD sources cleanly.
• Built-in RJ45 HDMI interface: The transmitter and receiver use HDMI male headers so no extra short HDMI patch cable is required between unit and display or source.
• Automatic signal adjustment: An automatic image adjustment system helps keep the picture stable and clear across varying cable conditions.
• Audio passthrough: Supports common sound sampling rates including 32KHz, 44.1KHz and 48KHz so audio remains synchronous with video.
• ESD protection and security: The design includes measures to protect the signal path, making it suitable for environments like data rooms or light industrial sites.

Who It's For

This HDMI extender is best for homeowners, small office installers, classrooms and light commercial sites that need to route a single HDMI source to a distant display without running long HDMI cable. It is particularly useful when existing Cat5e/Cat6 wiring is available and a clean single-cable run is preferred.

It is less suitable for someone who requires 4K or HDR transmission, multiroom HDMI distribution with switching or for setups that need HDCP 2.x guarantees; for those use cases look for a purpose-built 4K/HDR distribution system with explicit HDCP and switching support.

Pros & Cons

Pros

• Simple plug-and-play installation with HDMI male headers on both units removes the need for short HDMI patch cables.
• Delivers full HD 1080p60 with audio up to the specified cable lengths, suitable for most legacy HD needs.
• Automatic adjustment and built-in protection provide a stable, clear image across different cable conditions.
• Compact and portable units are easy to deploy temporarily or permanently.

Cons

• Does not support 4K resolution, so it is not future-proof for higher-resolution displays.
• Performance depends on cable quality and length; Cat5e maximum distance is shorter than Cat6/Cat7.

Specifications

Product	HDMI Transmitter and Receiver Extender Kit
Maximum distance	Up to 165ft/50m over Cat6/Cat7; Cat5e up to 40m
Video resolution	Full HD 1920x1080 at 60Hz
Audio sampling rates	32KHz, 44.1KHz, 48KHz
Interface	HDMI male headers on transmitter and receiver, RJ45 cable link
Compatibility	Supports 3D and backward resolutions
Protection	ESD protection and automatic signal adjustment

Our Verdict

The gernie HDMI extender kit is a practical, cost-conscious solution for anyone who needs reliable 1080p video and audio over a single Ethernet cable without the fuss of extra patch cords. It is good value for home theaters, offices and AV installers working with existing Cat5/6 wiring, but those who need 4K or advanced control features should consider a higher-end distribution system.

Frequently Asked Questions

Can this extender run over existing Cat6 wall runs?
Yes, it is designed to send AV over a single Cat6/Cat7 cable up to 165ft/50m and will work over existing wall runs of that type.

Does it support 4K or HDR formats?
No, the unit supports Full HD 1920x1080 at 60Hz and is not specified for 4K or HDR transmission.

Is a separate HDMI cable required between the units?
No, the transmitter and receiver have HDMI male headers so no additional HDMI patch cable is required between the device and the connected source or display.