O,K. The bag works fairly well, Put both cell phone and my Hytera HT in the bag. Tried calling my cell phone, no ring, straight to voice mail. So i'm assuming the cell phone is protected. The HT???,, Within a few feet of the bag i can break the squelch with another radio, 20-30 feet away, no go. My guess, the bag is supressing 50-60 dB of signal. Would be interesitng to take the bag with cell phone in close proximity of a cell tower to see what it does.. Maybe someday, but right now, gonna go grab some breakfast.