How to build a cell phone signal jammer - how to find tracking device on phone

Handheld 8 Band GSM/3G/4G Cellular Phone Jammer , GPS/ WiFi/Lojack/ Wireless Signal Jammer/Blocker Portable 8Bands Jammer/Blocker  Vodasafe P8   Brief Description: Vodasafe portable jammer P8 fits in your pocket and handheld using. it can effectively block CDMA,GSM,3G UMTS,4G LTE cellphone,GPS,Wi-Fi/Bluetooth, Lojack, it could block all types of Android phones,Tablets, Smart Phones, iPhones, Win phones etc. This portable jammer could work for wireless 2G, 3G, 4G, WiMax, Wi-Fi, Bluetooth ,GPS Lojack signals,you could choose this model that will be work stably and reliably.The blocker could create a quiet zone around you and prevent leaking of information in sensitive areas.   Features: * Compact Size and easy carry * Each band can turn ON/OFF without influencing the other bands operation * Rechargeable powerful battery  and can be used outdoors * Good cooling system can working long time * Could be used in Vehicle directly, With car charger for mobile using * Support use while battery charging * Only interfering downlink and no interception on the base station.   Applicable place:  For car, truck, bus, van, or even boat security, stop GPS tracking devices For meeting rooms, conference rooms, museums, galleries, theatres, concert halls, churches, temples, restaurants, classrooms, training centers, factories, banks, hospitals. Specification Total Output Power:4 Watt Cover Radius: 5-20m(under Signal level ≤-85dBm)@according to the signal density mobile network Jamming type: Sweep Jamming Antenna Type: Omni-Directional Power Supply: Rechargeable lithium Battery /AC adapter (50 to 60Hz/100 to 240V AC –DC12V) and 12V car charger Built-in Rechargeable lithium Battery:4700mAh /7.4V Working time of Battery: 2-3Hours Electric Filed (SAR):Compatible with ICNIRP Standards(Human safe); Operating Temp:-20 to +50℃ Storage Temp:-40 to +60℃ Humidity: 5%-80% Dimension(LXWXH):132*80*41mm not include antennas Inner box dimension: 220*202*65mm weight:0.85kg                                                                                                       Order information : P8A: CDMA/GSM/3G/4GLTE Cellphone/Wi-Fi/Bluetooth/GPS/Lojack  Europe Type frequency for used Europe, Asia, Australia, Middle East, Africa. 1. GSM900MHz:925-960MHz  0.6W 2. GSM/DCS1800MHz:1805-1880MHz 0.5W 3. 4Glte700MHz:790-826MHz 0.5W 4. 3G2100MHz:2100-2170MHz 0.4W (UMTS/WCDMA/TD-SCDMA/CDMA) 5. Wi-Fi/Bluetooth:2400-2500MHz 0.4W 6. 4GWiMax/4Glte:2620-2690MHz  0.5W 7. GPS/Glonass/GALILEOL1:1570-1620MHz 0.4W 8. Lojack /XM radio:173.03MHz 0.5W  Total Output Power: 4W   We could supply customized service by your special requirements about frequencies setting. Package contents: 1pcs Portable Signal Jammer 1pcs AC Charger 1pcs Car Charger 8pcs Antenna

how to build a cell phone signal jammer

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