Condign volumes 1 to 3

SECRET UK RESTRICTED Heard as: Shockwaves Microwave Microwave Threshold (mW.cm⁻²) Radio Frequency (MHz) PRF (Hz) Pulse Duration (μsec) YES ? >60,000 ? ? Low Pitch YES 12 200-3000 50-100 1-100 High Pitch YES ~2000 Any Any Any Smell YES ? Any [3] Any Taste[4] YES <13.1 Any <1000 Any Felt as: Heat[5] YES ~8.4 30,000 Any Any Shock[2] YES ? Any Any Any Burns YES ? 30,000 Any Any Internal Burns YES ? <3,000 Any Any Paralysis YES ? ~3,000[1] >500 Any Table F-1 HUMAN EFFECTS THRESHOLD (U) Notes [1] Reportedly enhanced if >500Hz [2] Electrical shock [3] Reportedly enhances smell [4] >100μ Amp [5] Added to those microwave heating effects can be the effects of IR --- F-6 UNCLASSIFIED UK RESTRICTED