Mylar vs real EMP bags, 40db vs 80db attenuation, quick RF sweep. NOTE: these detectors can still pick up traces of RF energy even through high attenuation bags, especially near seams & openings. Detecting residual RF is not the same thing as a device successfully connecting or transmitting usable data. One key caveat, a spectrum analyzer shows the exact frequencies and signal power so you can prove what’s leaking and by how much, while the SSM8000 RF detector is basically a broad “signal presence” sniffer that can be triggered by ambient RF, near field coupling, and seams. This particular RF Detector is great for sniffing out Hidden cameras, mics, hotspot, audio transmitters, cell signals, bugs & listening devices. #preparedness #tech #faradaybag #EMP #opsec