A GSM jammer or blocker is a device which deliberately transmits signals on the same radio frequencies as mobile phones, disrupting the communication between the phone and the cell-phone base station, effectively disabling mobile phones within the range of the jammer, preventing them from receiving signals and from transmitting them. Jammers can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected, such as entertainment venues.
Function of Cell phone jammerA cell phone jammer is a device that blocks transmission or reception of signals, usually by creating some form of interference at the same frequency ranges that cell phones use. As a result, a cell phone user will either lose the signal or experience a significant loss of signal quality.
Cell phone jammers have both benign and malicious uses. Police and the military often use them to limit or disrupt communications during hostage situations, bomb threats or when military action is underway. Portable personal jammers are available to enable their owners to stop others in their immediate vicinity (up to 60-80 feet away) from using cell phones.
Similar equipment is manufactured to block signals in environments where cell phone activity may not be desirable, such as theaters, churches and operating rooms.
Jamming Frequencies:- - CDMA & GSM : 870 - 960MHz
- PCS : 1930 - 1990MHz
- 3G : 2110 - 2170MHz
- 4G : 725 - 770MHz
- GPS L1 : 1500 - 1600MHz
- GPS L2 : 1220 - 1230MHz
- GPS L3 : 1200 - 1210MHz
- GPS L4 : 1250 - 1280MHz
- GPS L5 : 1170 - 1180MHz
- WiFi : 2400 - 2500MHz
- Bluetooth : 2400 - 2480MHz
- Wireless video : 1000 - 1300MHz / 2400 - 2500MHz
- Ambient temperature: - 20 - 55 ℃
Relative humidity: 30 - 95%
Power supply: AC 100 - 240V
Weight: 500g
Dimensions: 115 * 70 * 25 mm
- 1 * Portable signal jammer
1 * AC charger
1 * Car charger
5 * Antennas
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