Are jammers legal - are gps tracker jammers legal memo

Car Booster PCS/GSM/WCDMA Signal Booster for Cell Phone
Car Booster PCS/GSM/WCDMA Signal Booster for Cell Phone Cell Phone Signal Booster Reviews  Car Booster Vodasafe A33W-CDMA+PCS/GSM+WCDMA   Brief Description: The principle of "Car Booster" is that installing a transponder device in the car could receive the transmit signals of mobile users, The repeater could amplify at  200mw, and then use a high-gain antenna to transmit to the Base Station. The antenna will synchronously receive and amplify the weak signal from Base Station, and then transmit to the Car mobile users, thus ensured us communicate smoothly.   Features: *Specially designed to re solve the problem of weak signal inside vehicle and yacht. *Elegant appearance, light weight, low consumption, easy installation. *Effectively improve communication quality, reduce inside radiation. *Reduce mobile phone output power, pro-long mobile battery life.  *33dBm uplink output, extend communication distance and enhance performance remarkably at mountain area, forests, high building area etc. *Support GSM900+GSM1800, CDMA800+CDMA1900 network   Applicable place:  For car, truck, bus, van or even boat;   Specification: Frequency Range:                                                                                  GSM+WCDMA: 890-915MHz (Uplink); 935-960MHz (Downlink); 1920-1980MHz (Uplink); 2110-2170MHz (Downlink);  CDMA+PCS: 824-849MHz(Uplink); 869-894MHz(Downlink); 1850-1910MHz(Uplink);1930-1990MHz(Downlink); Max Gain: (Uplink)≥55dB (Downlink)≥55dB;  Bandwidth: Wind Band; Ripple in Band: CDMA/GSM≤6dB; DCS/PCS≤8dB;  Max Input Power Without Damage: 25dBm (Uplink); dBm(Downlink); Output Power: 1. Max ≥33dBm (Uplink); ≥0dBm (Downlink); 2. Min ≥26dBm (Uplink); ≥0dBm (Downlink); Spurious Emission: 1.9KHz-1GHz : ≤-36 dBm(Uplink); ≤-36dBm (Downlink); 2.1GHz-1275GHz:≤ -30dBm(Uplink); ≤-30dBm (Downlink); Noise Figure @max Gain: ≤6dB (Typical); Return loss:≤-8dB; TIme Delay:≤0.5μs; MTBF:>50000 hours; Power Supply: DC:12V/2A; Power consumption: Impedance: 50ohm; Input Signal Level: 5dBm or more; LED indication: On: Green; Off: no light;   Mechanical Specification: RF Con nector: SMA-Female Switch: Power SwItch Cooling: Heatsink Convection cooling  Dimensions(D*W*H):133*92*25(mm)  Weight: Ins tal lation Type:Wall Installation  Ervironment Conditions:IP40 Humidity: Operating Temperaure:-10ºC~55ºC Package contents: 1pcs Car Booster  1pcs Fixed bracket 1pcs Car charging source 1pcs Donor Antenna    

are jammers legal

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