Radiomaster TX16S MK3 MAX – full-size radio controller with dual-band ELRS

Radiomaster TX16S MK3 MAX Radio Controller (M2) ELRS / Black is a programmable radio transmitter for FPV drones, model aircraft and other RC models equipped with a suitable receiver. This black MAX version combines a full-size TX16S control layout, AG02 Hall sensor gimbals, a large touchscreen and an integrated dual-band ExpressLRS transmitter module. Its Mode 2, or M2, layout places throttle control on the left stick.

It suits users who need configurable controls for different models, multiple switches and rotary controls, and the option to expand their radio system with an external module. Initial setup requires creating or selecting an appropriate model configuration and binding a compatible receiver.

Gemini-X ExpressLRS on 2.4 GHz and Sub-G 900 MHz

An integrated RF module uses two LR1121 transceivers and supports ISM 2.4 GHz and Sub-G 900 MHz bands. Gemini-X, also known as Gemini Xrossband, allows simultaneous operation on both bands with a suitable receiver and configuration. A conventional single-band ELRS receiver requires a matching radio mode; simultaneous dual-band operation requires a Gemini Xrossband-capable receiver.

Up to 16 control channels are available. Receiver selection must take frequency band, ExpressLRS firmware and operating-mode compatibility into account. Two folding antennas make storage and transport more convenient. Fans and an aluminium heat sink provide cooling for the transmitter module.

AG02 gimbals and MAX construction

MAX-version AG02 gimbals feature CNC-machined aluminium construction, Hall sensors and a four-bearing design. Hall sensors measure stick position without physical contact. Included low-tension springs allow users to adapt stick feel to their preferences.

A carbon-fibre-look housing is complemented by CNC-machined aluminium buttons, knobs and a scroll wheel. Programmable RGB LED rings surround the gimbals and can serve as visual customisation or configured status indicators. Removable shoulder switch panels allow control-layout customisation and simplify panel replacement.

5-inch touchscreen and EdgeTX

Radiomaster TX16S MK3 is powered by an STM32H7 processor and uses EdgeTX firmware version 3.0.0 or later. EdgeTX allows model profiles, channel control and relationships between inputs to be configured for each model’s requirements.

A 5-inch IPS touchscreen has an 800 × 480-pixel resolution. Physical menu buttons and a scroll wheel complement touch operation, while screen backlighting adjusts automatically. Built-in flash memory is supplemented by a microSD card slot, although a memory card is not included. Firmware updates are supported through USB and EdgeTX Companion desktop software.

Controls, motion sensor and expansion

A full-size housing provides switches, sliders, rotary controls and trim buttons whose functions are assigned in each model configuration. With appropriate setup, an integrated motion sensor allows radio tilt to trigger functions, control camera pan and tilt, or activate telemetry voice callouts. A digital audio system delivers radio audio notifications.

A JR-compatible module bay accepts a separately purchased external transmitter module. This allows other radio systems to be used with their corresponding module and receiver; the built-in transmitter is an ExpressLRS version. A DSC trainer port and headphone socket are also provided.

Battery options and USB-C balance charging

Operating voltage is 6.6–8.4 V DC. Power can be supplied by two manufacturer-approved 3.7 V 18650 Li-ion cells in the included tray, a suitable 2S 7.4 V 5000 mAh 21700 Li-ion pack, or a 2S 7.4 V 6200 mAh LiPo pack. Batteries must be purchased separately.

An integrated USB-C charging circuit supports balance charging of suitable two-cell lithium batteries. Battery selection must follow the type and voltage requirements in the manufacturer’s manual. Specified current draw at maximum RF output power is 1.10 A; actual operating time depends on battery capacity and radio settings.

Dimensions and included accessories

Dimensions are 200 × 178 × 88 mm, and this MAX version weighs 864 g without a battery. An included TX16S MK3 Signature carry case supports transport, while a nylon neck strap helps support the transmitter during use.

Also included are an 18650 battery tray, two replacement shoulder panels, a USB-C cable, a screen protector, a 1.5 mm hex wrench, four low-tension gimbal springs, two gimbal stick set screws, a RadioMaster sticker set, a user manual and an inventory card. Battery, model receiver, microSD card and external transmitter module are not included.

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