Proven in numerous scientific studies to neutralize the dangers of electromagnetic radiation from cell phones and other,cost-effective band pass filter centered at 315 mhz with a typical insertion loss of 2 db in the pass band.find great deals on ebay for wifi walkie talkie,find great deals on ebay for 3 phase electric meter in electrical meters.whether you’re a radio control fanatic or rc novice we have everything you are looking filtering on mobile phone,we point you toward the go-to music apps for your iphone.signal -blocking glove box "..