FPV Radio Controller Guide: ELRS vs Crossfire vs FlySky, Gimbals, Module Bays and Range

Pick the link first, then the radio

A radio controller is a pair of things: the handset you hold and the radio link it speaks. The receiver in the drone must speak the same link on the same band, so the first decision is the protocol, and it mostly makes itself:

Unless you already own something else, choose ELRS: receivers cost a quarter of the alternatives, the firmware is updated over Wi-Fi, and every radio below ships with it. Our listings carry RC protocol and frequency as filters on radios and receivers, and the kit builder only pairs a receiver that shares both with your radio.

2.4 GHz or 900 MHz?

2.4 GHz ELRS reaches several kilometres with a clear line of sight and has the smallest antennas and receivers — the right choice for whoops, freestyle and most long-range quads. 868 / 915 MHz pushes through trees and terrain better and goes further at the same power, at the cost of larger antennas; it is the pick for 7″+ long-range and fixed wing. ExpressLRS ships an IN866 regulatory domain for India’s 865–867 MHz licence-exempt band; set it on both ends when you flash. Dual-band handsets (RadioMaster TX16S MK3, TX15, GX12, Boxer with a Nomad module) and dual-band receivers (XR1, XR4, GEPRC and iFlight Gemini) let you fly either, or both at once.

Handset form factor

• Full-size — RadioMaster TX16S MK3 / MKII, TX15 Max, Boxer Max. Colour screen, full-size hall gimbals, JR module bay, 2 × 18650 or 21700 cells. The long-term buy if you fly a lot or need many switches for ArduPilot flight modes.
• Compact — RadioMaster Boxer, TX12 MKII, TX15, Pocket Crush. Full-size gimbals in a game-pad body; most people’s best value.
• Pocket — RadioMaster Pocket, T8L, BetaFPV LiteRadio 2 SE. Smaller gimbals, fewer switches, runs on an 18650 or built-in cell; right for whoops, simulators and a first radio.
• Agri / survey ground stations — Skydroid T10 / T12, SIYI MK15 / MK32: a 5–7″ screen, the video receiver and the data link in one unit. See Skydroid agri radios.

Gimbals

Hall-effect gimbals (AG01 and the CNC gimbals on TX16S, Boxer, TX15, GX12) sense the stick magnetically and do not wear; potentiometer gimbals on the cheapest handsets develop jitter after a year of use. Mode 2 (throttle on the left) is the Indian and global default; buy Mode 2 unless you learned otherwise. Spring-centred throttle for planes, ratchet or free for quads — most handsets let you change it with a screw.

Module bays: JR, Nano, Micro

The internal ELRS module in a 2026 radio covers almost everyone. An external bay adds a second link (900 MHz for long range, Crossfire or Tracer for a TBS fleet, a 4-in-1 multiprotocol module for old toys and FlySky receivers) or a 1 W transmitter. JR bays are the full-size standard (TX16S, Boxer, TX12, TX15); Nano is the small slot on the Pocket, GX12 and TX16S-with-adapter; Micro is the newest, smallest format (Ranger Micro, Nomad, Bandit Micro). Modules are listed by bay under TX modules; a Nano module fits a JR bay with a case, not the reverse.

EdgeTX, simulators and batteries

RadioMaster, Jumper and most new handsets run EdgeTX: the same model setup, mixes and switch logic on every radio, so skills transfer when you upgrade. Any EdgeTX radio works as a USB or Bluetooth joystick for simulators (Liftoff, Velocidrone, Uncrashed) — the cheapest flight hours you will ever buy. Handsets take two 18650 cells, a 2S Li-ion pack or 21700s; see radio batteries.

Receivers: what to match

1. Same link and band as the radio’s internal or external module.
2. Antenna: a ceramic or chip antenna on a whoop; a T-antenna or dual “Gemini” diversity on 5″ and larger.
3. Output power: 100 mW is standard; 500 mW receivers (iFlight ELRS 500 mW) only matter for telemetry at long range.
4. Output type: CRSF for Betaflight / INAV / ArduPilot FCs (every ELRS receiver); SBUS or PWM for older FCs and planes.

Shop ELRS radios, RadioMaster radios, FlySky radios, RadioMaster ELRS receivers and RC antennas. Binding and first setup are in the build guide.