Hacking Beepers at a Fish & Chip Shop with an RTL-SDR and HackRF

Over on YouTube Paul from "Tall Paul Tech" has uploaded a video showing how he was able to reverse engineer the wireless protocol used by a simple restaurant beeper (aka 'burger pager') notification system that is used to let customers know when their food is ready.

By reading the label on the base unit, Paul found that the beeper system transmits at 433 MHz. He was then able to record it's transmissions with an RTL-SDR. Then using Inspectrum, he was able to determine the bit string and the symbol period.

From there he was able to use a GNU Radio program to replicate the signal, allowing him to use a HackRF to activate the beepers on demand.

In the past we've posted similar stories [1][2][3].

Hacking A Fish & Chip Shop

Tweet
Share
Reddit
Vote
Email

Related posts:

  1. Using a Yardstick One, HackRF and Inspectrum to Decode and Duplicate an OOK Signal
  2. Inspectrum: A New Tool for Analysing Captured Signals
  3. Controlling a Toy RC Car with a HackRF
  4. Hacking a Ceiling Fan Radio Control Signal with an RTL-SDR
  5. Using a HackRF to Reverse Engineer and Control Restaurant Pagers
Subscribe
Notify of
guest

1 Comment
Inline Feedbacks
View all comments
Richard
#237497

What a messy signal and very crude. I guess low power on free spectrum.

0
Reply