Skip to content
jeffgeerling.com
Screenshot of QuadRF
Hidden Gem

Edited by Alex Surfaced·Developer·2 min read
Share:

QuadRF is a cutting-edge radio frequency (RF) sensing device capable of detecting and locating drones and even visualizing WiFi signals through solid objects like walls. Developed by an individual hobbyist and engineer, it leverages advanced SDR (Software Defined Radio) techniques and signal processing to achieve remarkable capabilities that go beyond typical consumer-grade equipment. This tool opens up new possibilities for security, network analysis, and even creative environmental sensing.

Official site linkedUse-case reviewedDeveloper

Editorial check

How this page is checked

Official site:jeffgeerling.com

Source trail

jeffgeerling.com

External links are separated from Surfaced commentary.

Reader safety

Context before clicks

Product links and external services are not presented as guarantees.

Monetization

No affiliate flag

Ads and commerce links are kept distinct from editorial text.

Surfaced take

Why It’s Useful

This is an exceptional tool for anyone working with RF signals, cybersecurity, or network infrastructure who needs a deeper understanding of their environment. Unlike standard WiFi analyzers, QuadRF's ability to penetrate physical barriers and identify drone frequencies offers a unique advantage. Security professionals can use it to detect unauthorized drone activity on their premises, while network engineers can gain unprecedented insights into signal propagation. Its 'see through walls' capability for WiFi is particularly mind-bending, allowing for detailed mapping of signal strength and dead zones that were previously invisible. It's a testament to what skilled individuals can achieve outside of large corporate labs, offering a powerful, albeit niche, solution for complex RF challenges.

Enjoyed this? Get five picks like this every morning.

Free daily newsletter — zero spam, unsubscribe anytime.

Get the day's top tech discoveries delivered at 6 PM.

Free, source-linked, and easy to unsubscribe from.