BetaFPV released their version of the ExpressLRS Nano TX module and receivers. BetaFPV ELRS Nano offers both 2.4GHz and 868/915MHz options. In this review we will check out its features and how to set it up.
If you don’t already know what ExpressLRS is, you should check out my introduction here. It’s basically an affordable RC system that offers some of the best performance in terms of range and update rate.
Where to Buy?
The 2.4GHz and 900MHz modules look identical from the outside, so double check when you buy it.
- ELRS Nano TX Module (both 2.4GHz and 868/915MHz): https://oscarliang.com/product-c635
- ELRS Nano Receiver (both 2.4GHz and 868/915MHz): https://oscarliang.com/product-dpj5
- Moxon Antenna for TX: https://oscarliang.com/product-8s6t
- ELRS Nano TX Module 2.4GHz: https://oscarliang.com/product-6gow
- ELRS Nano TX Module 868/915MHz: https://oscarliang.com/product-7pzj
- ELRS Nano Receiver 2.4GHz: https://oscarliang.com/product-teh5
- ELRS Nano Receiver 868/915MHz: https://oscarliang.com/product-kyjo
- Moxon Antenna for TX: https://oscarliang.com/product-d1hf
Specs and Features
The BetaFPV ELRS Nano TX Module is designed for nano size module bay. It fits perfectly in smaller radios such as the Jumper T-lite, Frsky X-Lite and TBS Tango 2. However BetaFPV also offer a adapter so you can use this module in bigger radios with standard JR module bay, such as the Radiomaster TX16S and Frsky X9D-Plus.
Get this Nano to JR module adapter here (the case was 3D printed by myself): https://oscarliang.com/product-v6qi
One advantage of the BetaFPV ELRS Nano TX is the maximum 500mW output power, the Happymodel TX module can only do up to 250mW (with a cooling fan added). Although it doesn’t have a fan for cooling, the built-in heatsink should still help.
One downside of the BetaFPV ELRS Nano receiver is the size, it’s considerably larger and heavier than the Happymodel’s. With antenna mounted, the BetaFPV weighs 1.8g while the Happymodel PP only weighs 0.5g.
Compatible with other TX and RX?
You can use BetaFPV’s ELRS Nano TX and RX with hardware from other brands as long as they are also running ExpressLRS. For example, you can bind the Happymodel PP, EP1 and EP2 receiver to the BetaFPV ELRS Nano TX. You can also bind the BetaFPV RX to Happymodel TX.
2.4GHz or 900MHz?
As I mentioned in my ExpressLRS introduction, I recommend 2.4GHz. 2.4GHz gives enough range for most people and it supports 500Hz update rate (900MHz only does 250Hz at the moment), and it has wider bandwidth that allows more people to fly at the same time. Antenna is also much smaller with 2.4GHz.
If all you want is range and signal penetration, and you don’t care about the advantages mentioned, then go with 868/915MHz.
How to Setup BetaFPV ELRS Nano
The guide was originally written for the Happymodel TX module and RX (because they were the first to release the hardware), but the steps are identical for other hardware, including the BetaFPV ELRS Nano.