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GBPPR Microwave Surveillance Device #1 Using a 10 GHz Gunnplexer. Oscilloscope shows a "fan modulated" 32768 Hz signal input to the lock-in amplifier. Note how removing the Gunnplexer's lock-in reference si...
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GBPPR Microwave Surveillance Device #2 Using a 24 GHz Gunnplexer. A muffin fan is 12 feet away and you can hear the Doppler signal "peak" as the beam passes through the target area. projects1.gbppr.org
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GBPPR Microwave Surveillance Device #3 Remote audio from a stock Kustom Hawk K-band (24.15 GHz) radar gun. FCC ID: IVQK50 Audio was take from the "brown" wire in the antenna's wiring harness and sent to a L...
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GBPPR Speech Jammer - Audio Test #1 Audio test of the GBPPR Speech Jammer system. The parametric speaker is underpowered so the range (or effectiveness) isn't too great. The "speech jammer" works by pick...
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GBPPR Microwave Surveillance Device #4 Decatur MV-715 Range Master X-band (10.525 GHz) police radar gun modified for use as a remote surveillance device. There are 5 different audio recordings in this singl...
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GBPPR 1 GHz RF Spectrum Analyzer #1 IFR-1200 sweep of the tuned 10.7 MHz IF 300 kHz BW resolution filter. This is the same design as in the W7ZOI/K7TAU spectrum analyzer project from the August 1998 issu...
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GBPPR Microwave Surveillance Device #5 Intercepting telephone audio using a slightly modified Decatur RM-715 Range Master X-band doppler radar. Audio is the dial tone, then the "If you'd like to make a call...
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GBPPR Video Camera Sync Detector Experimental device to detect the faint 15.75 kHz horizontal syncronization frequency emitted by a NTSC video camera. The idea is to use this device to detect a hidden...
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Radio Intercept: GBPPR vs. Obongo #1 From the June 11, 2009 presidential training exercise in Green Bay, WI. Time compressed and raw audio (some minor cuts were made) from the Brown County 800 MHz trunked...
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GBPPR Active Denial System - 2M167 #1 Spectrum analyzer view of a 2M167 magnetron into a horn antenna. 1 MHz per division Add 2.278 GHz to the displayed frequency. Multiply the current meter reading (top s...
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GBPPR Remote Respiration/Heart Beat Monitor Experiments #1 Detecting a human breathing via the Doppler shift of a 10 GHz microwave beam. The respiration frequency is very low, around 0.5 Hz, so it is displayed using a DATAQ DI...
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GBPPR Active Denial System - 2M172 #1 Spectrum analyzer view of a 2M172 magnetron into a horn antenna. 1 MHz per division Add 2.278 GHz to the displayed frequency. Multiply the current meter reading (top s...
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GBPPR Non-Linear Junction Detector #1 Transmitter test of the GBPPR NLJD before I blew up the PM2111 RF power amplifier. Shows the approximate 40 dB range of the variable attenuator. Frequency is 902.0 MHz...
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GBPPR Microwave Surveillance Device #6 Intercepting telephone audio using a slightly modified Decatur RM-715 Range Master X-band doppler radar. That is a telephone test set a few feet away connected to a st...
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GBPPR Homebrew Radar Experiments #1 Video showing a Furuno FR-360 Mark 2 marine radar antenna system modified to provide a standard WR-90 output flange. This is for the addition of a parabolic dish anten...
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GBPPR Microwave Surveillance Device #7 Example audio intercept from a X-band microwave interferometer surveillance device. Words spoken are: "Testing Testing 1 2 3" Audio is received as a reflected phase sh...
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GBPPR Thermal Keypad Snooping Experiment Experiment using a non-contact thermometer to detect if a key has been pressed on a keypad. In the video, the key's temperature starts out around 69.7 degrees F. After...
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GBPPR Active Denial System - 2M167 #2 Spectrum analyzer view of a 2M167 magnetron into a 50 ohm load. 0.2 MHz, then 0.5 MHz, then 1 MHz, then back to 0.2 MHz per division Add 2.278 GHz to the displayed fre...
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GBPPR Active Denial System - 2M258 #1 Spectrum analyzer view of a 2M258 magnetron into a horn antenna. 0.2 MHz per division Add 2.278 GHz to the displayed frequency. Multiply the current meter reading (top...
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GBPPR Active Denial System - 2M261 #1 Spectrum analyzer view of a 2M261 magnetron into a horn antenna. 1 MHz, the 0.5 MHz, then 0.2 MHz per division Add 2.278 GHz to the displayed frequency. Multiply the c...
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