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How far can I broadcast LoRa packets WITHOUT a radio? - LoLRa

CNLohr · demo · Watch on YouTube

Embedded systems & DIY electronicsElectronics & circuit design

What it is

CNLohr explains how he made an ESP32 produce valid LoRa packets without a LoRa radio, using aliasing and clever signal tricks. It walks through the RF math and shows how far the signals reach.

Why Hacker News recommends it

HN cites it as a striking example of radio hacking with commodity chips.

  • 1 people recommended it
  • 1 different months
  • 0 strong recommendations
  • first 2024, last 2026

What HN commenters said

  1. “check out this guy, doing something similar sending Lora packets without a radio”

    Sending LoRa packets without a radio chip

    airbreather, 2026-01 · Recommendation · in “Time Station Emulator”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: lora, esp32, rf, aliasing, hardware hacking

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