Video thumbnail showing the Radiomaster AX12 transmitter with the built-in screen active, labeled 'Radiomaster AX12 ELRS with HDMI FPV and Mavlink'.

Radiomaster AX12: More Than Just a Pretty Face (Mostly)

You’re looking at the Radiomaster AX12, which, despite outward appearances, isn't just another transmitter. It’s essentially an Android tablet fused with a gimbal-laden remote, running RadioMaster OS instead of your usual EdgeTX. The selling point? That bright 5.5-inch touchscreen is designed to handle everything from live HDMI FPV feeds—tested and partially jittery with OpenIPC—to GPS maps and telemetry, all in one consolidated 650g package. If your dream cockpit is less "goggles and separate monitor" and more "just the radio," this might be for you. If you can't live without EdgeTX workflows and logical switches, however, you’ll probably find the adjustment rather tedious.

On the internal front, it boasts a built-in single LR1121 ExpressLRS chip, capable of pushing 250mW on either 2.4GHz or 900MHz, removing the need for an external module. Powering this whole setup is a massive 10,000mAh battery, promising around six hours of operational endurance, though we expect that will decrease significantly if you're actually using all the fancy screen features simultaneously. Setup is straightforward enough via the in-radio menus, but be aware that instruction coverage is currently lacking; expect a learning curve involving a fair bit of trial and error.

Then there are the caveats—those annoying little details that prevent total joy. While the AX12 is *designed* to support Mavlink passthrough for apps like QGroundControl, the provided demonstration couldn’t actually make it work. It's a promised capability, but you are buying into unproven setup steps for now. Similarly, those integrated GPS maps require an internet connection, typically provided via a phone hotspot, which might be inconvenient depending on where you fly. If these compromises don't deter you, and consolidation is priority number one, you can explore further or even purchase the AX12 below.

Explore the Radiomaster AX12

Click below to view the specifications in detail.

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You can also read our full, unabridged thoughts on the original post here.

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