Spectral Analysis of Various RF Bugging Devices
Left: Clear RF Spectrum (No Bug)
Right: Same RF Spectrum (Bug turned on)
Left: Clear RF Spectrum (No Bugs) - Broadcast FM Band
Right: Same RF Spectrum (Bug on and "Snuggled") - Broadcast FM Band
Left: Detail Scan of Snuggled Bug - Broadcast FM Band
Right: Close-In view of Same Device (Notice Wide FM Modulation "Jitters")
(This reading was taken at a distance of six inches from the antenna)
Left: Body Wire Covert Transmitter/Wireless Microphone
Right: Digital Burst Bumper Beeper
(Digital noise to the left of the spike, dead give-away of digital device)
Left: 155 MHz Telephone Bug
Right: Microwave Spread Spectrum Frequency Hopper (1.713GHz)
Left: Carrier Current Audio Bug (355kHz VLF) - Bugged Electrical Outlet
Right: Covert Video CCD Camera (VLF Emission) 15.750kHz - Hidden in light
Spectragram of Spread Spectrum Transmitter, dispersion "view" is 300 MHz, the
bug is the "hump" on the left third (75 MHz) of the display.
Left: Burst Audio Bug (turned OFF)
Right: Same Burst Audio Bug (turned ON)
Note: The "hump" on the right is caused by the digital circuitry in the device.
This is the 3.6 second data burst which occurs once every 6 hours.
The audio is digitized, compressed, and held for burst transmission.
Left: Ultra Low Power "Part 15" FM Bug
Right: Audio Bug Hidden next to TV Channel, very easy to miss
This is a Multi-Trace Spectrum Analysis of a Wideband Frequency Hopping bug.
The device covers 50 MHz of bandwidth, spectrum was swept (chirped) 500 times per second.
Your Turn, Do YOU see any Bugs on this spectrum display?
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James M. Atkinson
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127 Eastern Avenue #291
Gloucester, MA 01931-8008
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