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...
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...
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...
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...
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...
