How to build a cell phone jammer

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2021/07/21

All-in-one 12 Antennas Handheld Mobile Phone Jammer 4G/3G/2G + WiFi(2.4G, 5.8G）+ GPS + 315/433/868 Car Remote Control Blocker JM090513

This All-in-one 12 Antennas Handheld Mobile Phone Jammer + Car Remote Control Blocker is the latest model of the portable jammer. It has 12 antennas, which can cover a wider frequency range at the same time, and can block all mobile phone signals (2G / 3G / 4G), WiFi 2.4G 5.8G, GPS and 315, 433, 868 and other RF signals. Alternatively, you can easily select the specific frequency band required by switching the corresponding DIP switch up and down easily. In addition, it also has a good cooling system with 3 cooling fans inside.Features:1. The 12-band all-in-one frequency, blocking all mobile phone signals, 2.4G 5.8GWIFI, GPS, RF signals.2. The interference range is 5 to 20 meters (@ -75dbm, depending on the signal strength in the given area.)3. Manual design, similar to a mobile phone or walkie-talkie.4. Convenient to carry, can be placed in a pocket, can be hung, can also be tied to the belt with a protective cover5. Using DIP switch, you can turn on/off any signal frequency band without affecting other frequency bands6. With car charger, can be used directly in the car, DC12V. AC power can also be used7. Good cooling system, equipped with 3 cooling fans, the working surface temperature is lower than 42℃, even continuous working for 2 hours (used at room temperature)8. With a built-in battery, it can work for 80 minutes: use the world's safest large-capacity battery, which can be charged.

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