What is a radio protocol in FPV?

A radio protocol is the wireless communication system between your FPV transmitter and receiver. The transmitter and receiver must use compatible protocols to communicate. Common FPV radio systems include ELRS, TBS Crossfire, FrSky, and multi-protocol systems.

Q: Can an ELRS transmitter bind with any brand of ELRS receiver?

Yes! ExpressLRS is an open-source standard. A RadioMaster ELRS transmitter will bind seamlessly with BetaFPV, HappyModel, iFlight, or any other ELRS receiver, provided both run the same major firmware version (e.g., V3.x).

Can an ELRS transmitter work with a Crossfire receiver?

No. ELRS and TBS Crossfire are different RF protocols and are not directly compatible. The transmitter and receiver need to use the same compatible radio system. Some radios can support another protocol through an external RF module.

What is a 4-in-1 radio transmitter?

A 4-in-1 transmitter uses a multi-protocol RF module to support a range of compatible legacy RC protocols. It is useful if you already own models using different protocols and want one transmitter to control multiple types of aircraft.

Can a 4-in-1 radio control ELRS drones?

Not through the built-in 4-in-1 module itself. If you want to use ELRS with a 4-in-1 radio, you generally need a compatible external ELRS module, provided the transmitter supports an appropriate external module bay.

FPV Radio Protocols

Choosing the right radio protocol is essential for compatibility, latency, and control performance. Explore ELRS, TBS, FrSky, and multi-protocol radio controllers to find the right FPV system.

FPV Radio Communication

Radio Controller

Radio Protocol

Receiver

FC

fpv radio protocols find the right radio system fc — Controls the drone

Which Radio System Is Right for You?

ELRS	Multi-Protocol / 4-in-1	TBS / Crossfire	FrSky
Best for: Most FPV Pilots	Best for: Multiple Radio Systems	Best for: Existing Crossfire Setups	Best for: Existing FrSky Setups
Low latency	Supports multiple protocols	Long-range focused	Established RC ecosystem
Long-range capability	Useful for mixed RC fleets	Reliable control link	Compatible with supported FrSky systems
Wide radio selection	One transmitter for multiple systems	TBS ecosystem	Suitable for existing FrSky models
2.4GHz and 900MHz options	Great for pilots using different radio systems	Ideal for existing Crossfire users	Best when your models already use FrSky
Choose ELRS if: You are buying your first FPV radio or building a new FPV setup.	Choose 4-in-1 if: You already own models using different supported protocols.	Choose Crossfire if: Your drones already use Crossfire receivers or you specifically want the Crossfire ecosystem.	Choose FrSky if: You already have FrSky receivers/models and want to keep your existing setup.

Find Your ELRS Radio

radiomaster tx16s mk3 max radio controller gold

FLAGSHIP ELRS

-9%

RadioMaster TX16S MK3 MAX Radio Controller – Dual-Band ELRS/M2, H7 Power & Full-Size Control

$328.99

Ultra-Compact

-6%

RadioMaster TX15 Max Radio Controller – STM32 H7 Chip,Dual-Band ELRS (2.4G/900M)

$245.99

radiomaster gx15 max radio controller transparent charcoal

PRO CHOICE

-9%

RadioMaster GX15 Max Radio Controller - ELRS 2.4GHz M2

$320.32

BUDGET ENTRY

-16%

RadioMaster T8L Radio Controller (M2) with ELRS Transmitter

$49.39

ELRS 2.4GHz vS 900MHz

2.4GHz ELRS

900MHz ELRS

Best for Everyday FPV

Great for Freestyle, Racing, Everyday FPV, Compact & portable setups

Character Excellent balance of range, low latency, compact antennas, and portability for everyday FPV.

Best for Long Range

Great for Long-range flying, Extended-distance control, Remote environments, Higher link-budget applications

Character Better suited to long-range flying where link budget and extended control distance are priority

Multi-Protocol Radios

If you fly models using different radio systems, a multi-protocol radio give you greater flexibility

RadioMaster boxer radio transmitter side view

-8% OFF

RadioMaster Boxer Radio Controller CC2500/ELRS 2.4GHz FPV Radio Transmitter

$156.00

-16% OFF

RadioMaster Zorro Radio Controller 4 in 1 ELRS CC2500 Multi Protocol

$115.99

radiomaster-tx16s-mark-ii-radio-controller

-10% OFF

RadioMaster TX16S MKII Radio Controller V4.0 ELRS Model 2 ELRS 4in1 Version Support EDGETX and OPENTX

$259.99

-11% OFF

RadioMaster TX12 MKII Radio Controller with 16CH Hall Gimbals ELRS/CC2500 for Freestyle & Racing FPV Drone & Beginner Pilots

$132.99

Other Radio Systems

TBS / Crossfire/FrSky For existing Crossfire users and long-range, or FrSky setups.

100+ Sold

-16%

TBS Tango 2 – FPV Radio Controller for Drone Racing & Freestyle

$250.56

TBS Tango 2 PRO FPV RC Radio Controller Front

200+ Sold

-22%

TBS Tango 2 PRO FPV RC Radio Controller

$257.88

tbs mambo tracer remote fpv rc radio drone controller

100+ Sold

TBS Mambo Tracer Remote FPV RC Radio Drone Controller

$218.99

0 Sold

-$54

FrSky Taranis X9D Plus 2019 ACCESS 2.4G 24CH Radio Transmitter

$269.98

Which Protocol Is Right for Your Flying?

Your Situation	Recommended	Why
First FPV radio	ELRS 2.4GHz	Simple, modern and widely supported
5" Freestyle	ELRS 2.4GHz	Low latency and compact antennas
FPV Racing	ELRS 2.4GHz	High Packet Rate options
Cinewhoop	ELRS 2.4GHz	Small, reliable and easy to set up
Long-range quad	ELRS 900MHz	Better suited to long-range link budgets
Long-range + freestyle	Dual-Band ELRS	More flexibility across builds
Existing Crossfire fleet	Crossfire	No need to replace your receivers
Existing FrSky/FlySky models	4-in-1	Supports compatible legacy protocols
Multiple RC platforms	4-in-1	One radio can support different systems
Want maximum flexibility	4-in-1 + external ELRS	Legacy compatibility + ELRS

radiomaster gx15 radio controller white front

-24%

RadioMaster GX15 ExpressLRS FPV Radio Controller with Hall Gimbals

$245.99

-9%

RadioMaster GX15 Max Radio Controller - ELRS 2.4GHz M2

$320.32

-6%

Radiomaster TX15 FPV Drone Radio Controller-Superior Range Low Latency Dual-band Fast Performance

$185.32

-12%

RadioMaster TX15 Max Radio Controller – STM32 H7 Chip,Dual-Band ELRS (2.4G/900M)

$245.99

-10%

RadioMaster GX12 Dual-Band Radio Controller - ELRS 2.4GHz M2

$199.99

radiomaster tx16s mk3 elrs radio controller black

-8%

Radiomaster TX16S MK3 ELRS Radio Controller (ELRS / M2)

$265.99

All FPV Radio Controller

FPV Radio Protocols

Price

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Whether you use ExpressLRS (ELRS), a 4-in-1 multi-protocol system, TBS Crossfire, or a compatible FrSky setup, choose a transmitter that matches your receiver and flying needs. Explore our FPV radio controller collection to compare available radios and find the right fit for your FPV setup.