Snoopy Bit: Radio Transmission Detector Tool

• Snoopy Bit is a battery free instrument.
  
• Troubleshoot / Diagnose Radio Equipment.
• Externally investigate Wireless Data Transmissions.
• Energy Harvesting LED Indicator.
  
• Gold Plated Terminals.
  
• Use your Leatherman as a improvised Antenna.
  
• Wide band sensitivity: WIFI / LTE / CAT-M1 / NB-IOT / 2G / 5G (no mm wave) / HF / VHF / UHF.
  
• Not as durable as Volty, Handle with care.

Do not use Snoopy near unshielded antennas or areas where high voltage may be present!

Do not directly touch snoopy or conductive test antenna leads to any external device, this can lead to shock and will damage snoopy.

Q: Is there any way to damage Snoopy?

A: Yes, directly touching any conductive path on an external source can damage the electronics and possibly shock you. In addition, "Overtuning" near a powerful transmitter can damage Snoopy, start at a safe distance and minimal antenna until you know how Snoopy reacts, If the LED seem really bright while looking it strait on, you should stop there.

Q: Can Snoopy detect Bluetooth LE?

A: Most likely no for low power products like Mice, Earbuds, Remotes, Etc. The power transmission characteristics of this class of device will not illuminate the indicator.

Q: What is the detection range?

A: With a makeshift antenna and a handheld VHF radio, we have gotten bright indications with 5W handheld transmissions at a distance of 12 feet. The frequency, transmission power and antenna length all play roles in indication.

Tips for experimenting with cell phones & M2M devices:

For visualizing Cellular / M2M activities, turn off bluetooth and wifi on your target.

We have noticed that iPhones can dynamically change the active antenna (corner of phone) if Snoopy is "tuned in" (see below).

The LED can be a load and the target radio can sense it and switch dynamically to another antenna to compensate.