# Understanding FPV Protocols: CRSF vs SBUS vs FPort
The protocol your receiver uses to talk to your flight controller is a critical part of your FPV setup. It determines the speed, reliability, and features of your control link. The three most common protocols you’ll encounter are Crossfire (CRSF), FPort, and SBUS. This guide will help you understand the differences.
## Protocol Comparison: At a Glance
| Feature | CRSF (Crossfire) | FPort (FrSky Protocol) | SBUS (Serial Bus) |
|—————|————————————————|———————————————–|———————————————–|
| **Speed** | Very fast and low latency (up to 150Hz). | Fast, combines RC and Telemetry. | Slower, fixed latency (~9ms). |
| **Telemetry** | Full, high-speed telemetry built-in. | Full telemetry support on a single wire. | Requires a separate wire (SPORT). |
| **Wiring** | Simple (TX/RX pair). | Simplest (single wire for RC and Telemetry). | More complex (requires TX and SPORT). |
| **Ecosystem** | TBS (Team BlackSheep). | FrSky. | Wide support, but older technology. |
| **Best For** | Long-range, freestyle, racing (Best overall). | FrSky users wanting simple wiring. | Basic setups, legacy hardware. |
## Why Protocol Matters
– **Latency**: A faster protocol means your drone reacts to your stick movements more quickly, giving you a more connected feel.
– **Telemetry**: Modern protocols send data *back* to your radio, so you can get warnings for low battery or poor signal right on your controller’s screen.
– **Simplicity**: Newer protocols like FPort and CRSF simplify wiring and setup in Betaflight.
## Video Deep Dive
This video gives a clear technical overview of the different protocols and what the latency differences mean in the real world.
### Get the Best Link with a CRSF Receiver
For the most reliable and feature-rich control link, Crossfire (CRSF) is the undisputed king. The **UAVMODEL-NANO-RX** from uavmodel.com is a tiny, long-range CRSF receiver that’s easy to install and provides a rock-solid link with telemetry, making it the perfect choice for any serious FPV pilot.
### Our Recommendation
– **If you’re buying new gear**: Choose a CRSF-based system like TBS Crossfire or ExpressLRS. The performance and features are worth it.
– **If you have FrSky gear**: Use FPort for the best performance and simplest wiring.
– **If you have older gear**: SBUS is a reliable workhorse, but consider upgrading for your next build.