RadioMaster MT12 4-in-1 16-Channel 2.4GHz Radio System w/R85C Receiver

This radio is AMAZING!! I initially pre-ordered the 4-in-1 version on Amain, but it was in stock on AliExpress, so I bought it there. I received it a few days ago and I’m very impressed. It’s quite possibly the most advanced radio under $400 I’ve ever seen or heard of. It runs EdgeTX (or OpenTX) and it has up to 32 channels (with expander module). It also supports (4-in-1 version) most manufacturers’ receivers and standards like STDHSS and D8/16. The module is updatable, so more models will probably be supported soon (like the Traxxas TQi is a work in progress) The best part is the expandability and all that hardware! It has so many customizable buttons, pots, trims, 3-way switches, you name it. It comes pre installed with a 512MB (yes, MB) memory card and that stores about 60 models in memory. I’m assuming that if you put in a larger card you can get toward of 100 models stored in this radio. Each model can have different settings (e.g, switch actions, RGB lighting, curves) or you can make a function global. It also supports really advanced programming such as curves, graphs, trigger trims, LUA scripts, sound effects, dual/expo rates, etc. The hardware itself is pretty nice. It’s not Futaba, but it does have Hall effect sensors and adjustable tensions and whatnot. It looks cheaper online than it does in person. It’s a bit on the heavy side though due to the screen and hardware. The wheel and trigger sensors are incredibly smooth and fluid, unlike many RTR radios that use potentiometers and springs. I only have a couple issues. One, the standard RadioMaster receivers DO NOT seem to have good range. Maybe I set something up wrong, but I’ll experiment soon with a FlySky receiver and update this review later. Another gripe I have is that it’s about 3x heavier than the Traxxas TQi radio. It’s pretty solid. Another issue was that the plug over the AUX port was triggering the audio to turn off, thinking a jack was plugged in. I cut the AUX plug cover plug off and no issues! :) ##UPDATE## I tested the radio with a FlySky 3ch receiver and the range is A+! I recommend the radio, but not the standard RadioMaster receivers. ##UPDATE #2 I now use the FlySky IA lineup. They perform incredibly well and I’ve set up telemetry screens that show speed, voltage, etc. All channels also seem to work perfectly well. The battery life on the radio is very good as well….probably two or three weeks with daily use. ##UPDATE #3 I have been using this radio with my 8CH TRX-4 with rear steer, TT02 drift car, Traxxas Maxx, and a E-Revo VXL (all equipped with FlySky receivers and telemetry sensors. It works amazingly and has survived multiple ~3ft drops on concrete and light rain. ##UPDATE #4 It now appears that RadioMaster is now selling replacement parts on their website for extremely cheap! You can get mainboards, screens, steering wheels, replacement buttons, etc. ##UPDATE #5 I’ve taken the time to become more of a power user. Now I have launch control (special throttle delay and expo upon a button press to prevent wheelies) and even voice feedback and haptics. It even logs my runs for review at a computer! I could not be happier. And for only about $150, it’s a deal you don’t want to miss.

You get a whole lot of radio for the price. It may not be a walk in the park to setup every feature you want but the features are there. And there’s videos out there to walk you through a lot of custom settings. Not to mention the fact that this version can bind too many other brands.

I’ve only had this radio for a few weeks so far, and only used it a couple times, but I have done a lot of research before purchasing. My initial review is overall positive, but with some reservations.. The MT12 radio is clearly very advanced in features, geared toward power users. Seemingly unlimited parameters can be modified, and uniquely for each model that is programmed into the memory. All of the basics like trims, dual rates and exponential, as well as channel mixing, plus so many advanced features that I don’t even understand. The big key for me though, is the 4in1 module, so that I could consolidate my growing transmitter collection. So far I have it bound to Radiolink RG4FG RXs, and the included Radiomaster receiver. Unfortunately not every protocol is supported, such as Turbo Racing(older Horizon mini cars). Alas, can’t win them all… The unfortunate side to all these features is that they are not easy to navigate. I definitely need to spend more time watching videos and learning about this radio before I will be able to use it daily. The navigation is not easy, despite the nice scroll wheel/button. There are many layers of screens to get through, and the standard adjustments I want(trim, D/R, EXPO, endpoints) are not always labeled in the conventional way, nor are they quick to access while driving. I would like to be able to make my own display screen and hot buttons for adjustments. Also, the extra channel buttons seem a bit odd in offering and position. I’d like to have a dial more easily accessible and maybe different position switches. In all, I do think it feels very high quality in the hand, and I like the general ergonomics. Throttle and steering wheel are very smooth and precise feeling. I like to hold it and the lights in the chassis are fun and can be responsive to radio input. The unit is much heavier in the hand than any other radio I’ve had, perhaps due to the 5000mah battery. PS mine included a 2s 5ah battery when purchased from AMain, though the product description said it did not. In all I would buy this again, and would recommend to others, assuming they are “power users” and willing to learn the skill of setting up this radio. Not for the novice or impatient users.

One ring to ring them all! Ok not a ring but a transmitter and maybe not all protocols, that said I have it working with my spectrum rx, Traxxas tq and SLT receivers. You have to be somewhat tech savvy. Some thing as simple as servo reversing will take some time to figure out. Main reason for the one star reduction, none of theirs terms makes sense.

Works great,very pleased. Radio came in a timely manner and I have always liked the open to environment.