We designed four open-source ExpressLRS receivers and put them through a real range test.Links:GitHub: https://github.com/incutec-hw/OpenRXFollow the develop...

18 Jul 2026 #fpv #expresslrs #lora We designed four open-source ExpressLRS receivers and put them through a real range test.

Links: GitHub: https://github.com/incutec-hw/OpenRX

Follow the development on:

Discord: / discord

Get notified when the products release:

OpenDrone newsletter: https://opendrone.be/…

ExpressLRS firmware: https://github.com/ExpressLRS/ExpressLRS

Bastian (Designer): https://github.com/bastian2001

Wezley Varty’s 100 km ExpressLRS range test: • Full OG Video | The Ultimate ExpressLRS Ra…

Chapters:

  • 0:00 - Intro
  • 0:31 - One of these breaks a design rule
  • 1:08 - The plan
  • 1:23 - What a 2.4 GHz wave actually is
  • 2:06 - AM and FM modulation
  • 2:34 - Digital modulation: ASK and FSK
  • 3:23 - QAM explained
  • 3:48 - What if we just want range?
  • 4:42 - The noise floor
  • 5:51 - Decoding below the noise floor
  • 6:14 - A quick announcement
  • 6:35 - How LoRa works: chirps
  • 7:20 - The dechirp trick
  • 8:03 - Processing gain
  • 8:31 - The four receivers
  • 9:29 - The rule: never route RF through a via
  • 9:52 - 187 Mbps next to a 5G tower
  • 10:34 - Why everything in RF is 50 ohms
  • 11:55 - Reflections
  • 12:17 - Current flows in circles
  • 13:25 - PCB design walkthrough in KiCad
  • 14:23 - It’s your layout

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