Emitter HelloRadioSky V15 ULTRA ELRS mode 1 brown black gold

Remote Control HelloRadioSky V15 MAX

Available from December 2026.

For your convenience, HelloRadio has originally provided this magnificent CNC machined aluminum handle on your V15 ULTRA, robust and foldable.

Don't forget to add a receiver battery and a first receiver to your cart, essential to start using your new V15 remote control.

Warning regarding technical specifications

The specifications of the HELLORADIO V15 remote controls presented on this page are based on samples provided by the manufacturer HELLORADIOSKY to Scientific MHD for evaluation.

This information is provided for guidance only and is subject to change.

The manufacturer and software publishers reserve the right to change, at any time and without notice, the technical specifications, equipment, and features of their products.

Therefore, some specifications of the marketed models may differ from those presented on this page.

Warning regarding LBT V4.1 standard

The HF modules of the HELLORADIO V15 transmitters distributed by Scientific MHD integrate the latest version of the ELRS firmware V4.1 LBT.

To ensure compatibility, the receivers used must be equipped with a V4.x LBT firmware.

By choosing from our catalog a HELLORADIO receiver whose reference ends with the letter B, you are assured of receiving a model delivered in V4.1 LBT, ready to be paired with your V15 transmitter.

If you wish to use ELRS receivers from other brands or older models, an update of their firmware to a V4.x LBT version will be necessary.

This operation is described in our user manual.

Description Transmitter HelloRadioSky V15 ULTRA

The HelloRadioSky V15 ULTRA remote control benefits from the best technology has to offer, allowing you to control all your models reliably, optimally, and with your imagination as the only limit.

With its resolutely modern and high-level hardware design, the V15 ULTRA transmitter notably offers you:

➢ High-quality sticks made of CNC aluminum and mounted on ball bearings with RDC90 sensors, particularly precise and with a very long lifespan:

○ Compared to classic high-end sticks, they offer you much superior piloting precision regardless of temperature and environmental conditions

○ they are wear-resistant and save you from regularly sending your equipment for maintenance

○ They are fully adjustable to meet your expectations (type and force of throttle brake, neutral return force, piloting mode, and height)

○ They are equipped with LED rings whose lighting color can be set (color change according to throttle power, for example, or motor safety)

➢ Quality auxiliary switches and potentiometers arranged ergonomically, which you can freely assign to all functions and channels.

➢ The possibility of swapping the upper right (momentary) and left (2 positions) switches.

➢ A large capacity Lithium battery slot with integrated fast balance charger, allowing you to pilot for many hours (up to 10 hours depending on settings, with our optional 5000 mAh battery) before needing to recharge in less than two hours with the appropriate charger. You can even fly longer if needed, using a simple smartphone "PowerBank".

➢ A particularly powerful next-generation processor, optimizing the processing of piloting commands (reactivity, precision, mixing calculations in particular), facilitating updates and already compatible with future versions of the EdgeTX internal software.

➢ A large 4.3" color touchscreen, very readable, facilitating access to model memories, settings, and telemetry data in particular.

➢ A freely assignable vibrator (chrono or telemetry alerts, for example) adjustable in power, to alert you to events of your choice without having to take your eyes off your model.

➢ An internal HF module based on the ELRS protocol.

Resulting from the latest advances in pilot-model reduced link, the ExpressLRS GEMINI Dual Band link offers unmatched characteristics:

• superior reactivity (low latency and high servo position refresh rate),
• increased range compared to a classic link,
• elimination of interference risk thanks to dual simultaneous link on two frequency bands (requires a Gemini X receiver),
• advanced telemetry and particularly attractive receiver prices.

➢ A slot for an optional second external HF module in JR format type MultiModule 4 in 1 (subject to commercial availability).

Equipped with the 4 main circuits used by the majority of RC manufacturers, this module can be "bound" with dozens of receiver references on the market (Hott, Multiplex, Hitec, Futaba SFHSS, FrSky, FlySky, JR, Walkera, DSM-DSMx, Assan, etc.).

It therefore allows you to reuse the receivers from these brands that you already own or to acquire new ones according to your quality and price criteria. Note that the version of this module complying with European LBT regulations is obviously only compatible with LBT receivers.

In any case, a preliminary test is essential.

➢ A real-time and permanent power consumption analyzer to ensure the reliability of the device.

➢ Two short, adjustable, and foldable antennas, ensuring the best possible link quality regardless of flight conditions and the receiver used.

➢ A resolutely modern and extensive connectivity:

○ USB-C connector compatible with PD (Power Delivery) exclusively dedicated to fast battery charging

○ USB-C connector exclusively dedicated to PC connection (updating and saving models and flight logs, simulator control, free editing-simulation-saving program “Companion”)

○ 3.5 mm jack for headset, if the speaker built into the transmitter might disturb your fellow pilots on the field

○ Unique multifunction HRS Tolls connector providing access to both the Serial connection (adding an external module such as a GPS) and the multifunction measurement and diagnostic port HRS TOOLS (see below)

➢ An internal LiPo battery tester up to 6S, NiMH receiver battery, and transmitter battery charge, making the purchase of an external battery tester unnecessary.

The transmitter screen displays the battery status and its LiPo elements as soon as it is connected.

➢ An exclusive internal measurement and diagnostic accessory HRS TOOLS, completely new and remarkably powerful.

Thanks to its simple and quickly accessible menu, the pilot immediately accesses efficient diagnostic and analysis tools without ever leaving the transmitter. HRS TOOLS therefore avoids the purchase of equivalent accessories, which alone cost as much as the transmitter.

Examples of available tools:

○ 2 highly efficient servo / ESC / controller testers compatible with all types of servos and controllers on the market, including DShot (manual/automatic/stick mode, analog/digital, 50Hz to 560 Hz, etc.).

○ Automatic RC signal analyzer, capable of detecting and displaying the characteristics and position of the channels of any RC signal from a receiver or transmitter and complying with one of the following standards: PWM, PPM, SBUS, CRSF, SUMD, DJI RS, and MAVLink.

The screen notably displays the channel positions, the direction and shape of the signal, and the frame frequency, facilitating the installation, configuration, and adjustment of models or even training.

○ Oscilloscope displaying the shape and several characteristics of an RC signal to determine its type and quality (jitter analysis, for example).

With its free and evolving Open Source internal software (firmwares) designed and maintained by an international community of experienced pilots, the V15 transmitter offers you:

The ergonomics and power of EdgeTX

➢ The ergonomics and power of EdgeTX, control software managing up to 32 channels, allowing you to program and control virtually any type of model, from 2-axis aircraft to very large Jets or gliders equipped with 18 servos or more, including helicopters and drones of all types, boats, and other terrestrial or underwater vehicles.

Unlike "pre-programmed" transmitters, including very high-end ones, EdgeTX does not limit your creativity with any pre-programming that restricts possibilities.

EdgeTX gives you complete freedom to assign any control element to any mix or channel output, with or without a curve (up to 17 points), to manage rates, conditional functions, or even remarkably powerful special functions.

You can also create any type of mix specific to a model in a logical and efficient manner, which is impossible with a classic transmitter offering only pre-programmed or "pseudo-free" mixes.

➢ A modern and practical user interface, based on both classic dedicated physical buttons (direct access to main menus and servo monitor), as well as a 5D wheel and a large color touchscreen comparable to that of a smartphone.

It is a major asset when you need to change a setting in the field or program a very complex model in the workshop.

➢ Clearly structured menus, preconfigured by Scientific France to display in French by default (English also available if needed).

➢ Preconfigured voice messages by Scientific France to speak French by default (English also available if needed).

And if none of the available voice messages among the dozens available meet your needs, the V15 also allows you to broadcast your own voice messages, recorded with your voice or created by TTS (to be created with the application or free site of your choice).

These messages can be triggered according to your choice by flight events such as timer, consumption, altitude, GPS position, variometer, engine cut-off, etc.

Model memories recorded on the provided memory card, offering the following main advantages:

○ Up to several hundred model memories available immediately, sortable by freely definable categories (examples: Airplanes, Gliders, Helicopters, Drones, Backups, Indoors, etc.)

○ Ease of model backup (use of the free Companion software recommended)

○ Ability to assign a photo of your model to each memory

○ Ability to assign a freely definable checklist (monitoring of switch and stick positions, text file containing your instructions such as centering or battery type to use, etc.) to each model memory

➢ A powerful model creation assistant allowing you to create the memory of a new model in just a few seconds, by answering simple questions (model type, number of servos, type of motorization, presence of retractable landing gear and flaps, etc.).

Once the model is created, nothing prevents you from adding more complex or very specific functions that your model may require (hatch opening sequencing, interactive mixes, various curves, or others).

➢ Very advanced telemetry management, with automatic discovery of available sensors and virtually supporting all types of available sensors (altitude, speed, consumption, variometer, GPS position, voltage, temperature, RPM, etc.).

The V15 can display and/or pronounce aloud each sensor value sent by your model, according to a freely definable trigger mode (by a switch, every 10 seconds, by tilting the transmitter, by changing flight phase, etc.).

➢ The ability to record flight data (throttle, servo positions, geolocation, speed, consumption, altitude, etc. depending on installed sensors) in a file on the memory card and analyze this data on the V15 screen and/or on a computer.

The ability to customize your transmitter by adding new features by installing:

○ Free Widgets (a kind of windows that can display one or more pieces of information such as channel position, a timer, transmitter or receiver battery voltage, engine safety, consumption, engine RPM, remaining battery capacity, date, etc. depending on available data).

These widgets can be placed according to your expectations in different places on the home screen(s).

Some Widgets allow you to define color, text, size, etc.

○ Free scripts (dedicated programs performing a particular function (example: direct access to receiver ELRS settings, WiFi startup, model creation assistant, flight history, etc.).

○ Template models (yours or those available for free on the net), saving you from having to reprogram each new model from scratch.

An AI assistant (exclusive Artificial Intelligence to the V15 Ultra)

➢ An AI assistant (exclusive Artificial Intelligence to the V15 Ultra), allowing you to orally question the AI (English by default, French possible) thanks to the microphone integrated into the transmitter. A WiFi network accessing the internet must be available (your smartphone with connection sharing for example).

A 6-axis gyroscope freely assignable. Examples of use:

○ Control your model by simply tilting your transmitter in the desired direction (3 axes)

○ Implement a "Head Chasing" follow-up

○ Trigger a freely programmable action (example: announce the model's battery voltage when the V15 is tilted to the right).

➢ The ability to do wired training (compatible with most commercial transmitters) or wireless, as a Master or Student transmitter.

When your V15 transmitter is Master, it allows you to choose the channels to transmit to the student, define their neutral, direction, and throw.

You can even choose to mix the student's commands with yours to correct the model's trajectory without ever touching the training switch.

You can also trigger a sound message at each toggle of the training switch to automatically indicate to the student that they have control or that you are taking over the piloting.

➢ Access to regular and free updates of EdgeTX and ELRS, ensuring you have a transmitter as reliable and efficient as possible, offering all the features a modeler might expect. Your investment is thus protected.

The update can be done by simply connecting to a PC, via WiFi (HF module), or by memory card.

➢ Access to numerous tutorials available online thanks to the vast community of users worldwide.

This is undoubtedly the best way to learn how to use your transmitter and make the most of its power for your models.

The optional Companion computer software, available for free for Windows, MacOS, and Linux.

It allows you to:

○ Save/restore your models and radio configuration on a computer or memory card

○ Create and simulate a model memory without even turning on the transmitter (very practical especially for creating or checking a complex mix without having to turn on the transmitter)

○ Update the EdgeTX firmware

○ Create a checklist

○ Assign a photo of your model to its memory

○ Etc.

Features V15* (depending on version)

➢ 32-channel transmitter operating under EdgeTX (Open Source program)

➢ 109 mm (4.3") color touchscreen, physical buttons in Alu* or plastic* and 5D wheel for easy and fast navigation

➢ High-quality Alu sticks mounted on ball bearings, with exceptionally high-quality RDC90 potentiometers and very high precision and lifespan, fully adjustable and equipped with programmable multicolor LED lighting

➢ 6 switches + 2 center-notched potentiometers / 4 electronic trims / 6 programmable central switches

➢ Large battery compartment accommodating many battery formats

➢ Nominal autonomy up to 10 with the HelloRadioSky 5000 mAh battery, depending on screen settings and the HF module used

➢ Internal speaker for sound playback

➢ Audio headphone jack on 3.5 mm Jack for sound playback on earphones

➢ Foldable Alu carrying handle

➢ Elegant and protective carrying case containing the delivered accessories* (charging cord, wide neck strap, stick springs, adjustment key, carrying handle, screen protector)

➢ µSD memory card containing software, images, sounds, scripts, model memories, checklist, etc.

➢ Programmable vibrator (function and power)

➢ USB-C connector for classic or fast balanced charging (PD compatibility)

➢ Wired training jack (wireless training also available)

➢ USB-C connector for flight simulator/data transfer with computer

➢ High-performance internal dual-band ELRS HF module GEMINI X 1W, operating optionally in 2.4 GHz, in 868 MHz, or on both frequency bands simultaneously

➢ ELRS settings accessible via WiFi from a smartphone/tablet or PC

➢ Silent internal fan to ensure the cooling of the HF module under all circumstances

➢ Transmission power from 10 mW to 1W (power limit depending on the country), adjustable manually or automatically to ensure optimal range and consumption

➢ JR format slot for adding an optional second HF module type 4in1, TBS, etc.

➢ Internal Artificial Intelligence (AI) module

➢ Multifunction connector and HRS TOOLS accessory (serial port / multi-function RC tester)

➢ Measurement and diagnostic device: servo tester / battery tester (LiPo and reception) / automatic RC signal or Flight Controller analyzer (DJI, SBUS, CRSF, PPM, PWM, SUMD, telemetry) / electrical consumption)

➢ Internal gyroscope/accelerometer

➢ Weight: approximately 730 g without battery