
You can also choose how intense the backlight is (or if it has one at all). The Tandem X20S has a built-in telemetry module, which allows you to view important information like your aircraft’s battery voltage on its screen. As a result, the Frsky Tandem X20S is compatible with Frsky ACCST 2.4Ghz (range of up to 50KM) and 900 Mhz receivers (range of up to 100KMs). The internal dual-band RF module provides both 2.4Ghz ACCST and 900Mhz D16 mode. This includes two variants of their upcoming R9 series long-range wireless receivers!
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One notable addition to the Tandem X20S is its ability to use Frsky receivers in D16 mode (like the R9M), with telemetry and full range out of the box.

Even an OSD setup screen allows you to change the OSD menu’s name or adjust its brightness. It will also show the throttle, battery voltage, and timer for flight duration. The Tandem X20S has a built-in OSD (On Screen Display) which shows you your current channel and control stick position. The Tandem comes with the internal RF module installed inside its sleek design but can also be used externally if needed. But you don’t have to use the touchscreen if you choose not to all buttons are assignable via software. It has a beautiful touchscreen that is 800*480 resolution. The Tandem X20S looks clean, with 6 quick mode buttons in the front and 2 smaller momentary style switches. It is certainly not aimed at the average RC pilot but instead towards long-distance fliers, available for commercial purchase. The Tandem X20S is a relatively solid radio at $399.

It features an internal dual-band RF module, capable of working under 2 different modes (2.4G and 900M) with telemetry that displays a range of up to 100KMs or 4ms end-together latency! In addition, it has a touchscreen, 6 quick front modes, and 2 momentary rear buttons.
