The LINDY Guide to HDBaseT
HDBaseT has become one of the most widely used technologies for professional AV installations — letting you send HDMI video, audio, Ethernet, and control signals over a single, inexpensive Cat cable instead of a tangle of separate cables. Here's what it actually does, and where its limits are.
What is HDBaseT?
HDBaseT is a connectivity standard that transmits uncompressed HD video and audio, Ethernet, USB, and control signals (IR/RS-232) — and often power — over a single Cat5e/Cat6 cable, using a transmitter unit at the source end and a receiver unit at the display end.
Instead of running separate HDMI, Ethernet, and control cables to a projector or display across a room, HDBaseT consolidates all of that onto one cable that's cheaper and easier to run than HDMI over long distances.
What HDBaseT is commonly used for
- Home theatre and multi-room AV, sending video from a central equipment rack to displays in other rooms
- Commercial and education AV, distributing signal to projectors and displays without expensive in-wall HDMI runs
- Digital signage networks, where multiple displays need a reliable, long-distance signal source
- Conference rooms, combining video, control, and sometimes PoC power delivery to a single wall plate
Key features
- Long-distance transmission — typically up to 100m over Cat6 cable, far beyond HDMI's practical passive limit of around 15m
- 5Play convergence — HDBaseT can carry video, audio, Ethernet, USB, and control signals together over the one cable
- Power over Cable (PoC) — many HDBaseT systems can power the receiver unit remotely, removing the need for a separate power supply at the display end
- Uncompressed signal — video and audio are transmitted without lossy compression, preserving full picture and sound quality
Where HDBaseT has limitations
HDBaseT isn't the right fit for every scenario:
- Bandwidth ceiling on longer runs. Achieving full 4K60 4:4:4 (18Gbps-equivalent) signal quality at the full 100m distance can be demanding on cable quality and installation — pushing both distance and highest resolution/refresh rate simultaneously is where HDBaseT is most likely to be constrained.
- Cost per endpoint. Because it requires a transmitter and receiver pair (not just a cable), HDBaseT costs more per connection than a simple cable run — which matters when scaling to many displays, where AV-over-IP can become more economical.
HDBaseT vs. the alternatives
| Technology | Max Range | Extra Hardware | Best For |
|---|---|---|---|
| Active/fibre HDMI cable | 15–100m | None | Simple single-run installs |
| HDBaseT | Up to 100m | Transmitter/receiver pair | Point-to-point with control/power passthrough |
| AV-over-IP | Network-limited | Network switch + encoders/decoders | Large multi-room/multi-display systems |
LINDY's recommendation
HDBaseT is the strongest choice when you need to send video a meaningful distance (30–100m) and also want control signals, Ethernet, or power delivered over the same cable — a common requirement in commercial and installer-grade AV. For very large multi-display deployments, it's worth weighing HDBaseT against an AV-over-IP system, since per-endpoint cost adds up differently at scale.
Need help planning an HDBaseT installation? Contact our team on 1300 888 095 or browse our HDBaseT range.
