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GPS L1 and GNSS Signal Blocking Devices | GPS Jammer USA

GPS jammers in the USA category include portable designs, multi-antenna systems, and models supporting different GPS and GNSS bands. Each device features its own configuration in terms of signal support, antenna setup, and hardware structure.

GPS L1 remains one of the commonly referenced bands, though some GPS scramblers for car also support additional GNSS frequencies to achieve broader signal coverage.

Browse GPS blockers with different formats and specifications, including compact units and larger systems for different application requirements.

Box-type Portable GSM GPS jammer for Car

CM4 Box-type Portable Anti Tracking GSM GPS Jammer for Car

Save $115.13 · 33%

CM4 is a compact Box-type portable Car GPS L1 L2 jammer for anti tracking. Blocks GSM, GPS L1/L2 signals with 10–15m coverage. Built-in battery, easy to use. It's practical for everyday vehicle privacy without drawing attention.

$345.01$229.88
miniature OBD GPS jammer for Cars

GP-OBD - OBD Port GPS Signal Jammer for Car

Save $93.48 · 49%

GP-OBD is a compact GPS jammer for cars that plugs into the OBD port, discreetly blocking GPS tracking signals (L1/Glonass) with silent operation and wide compatibility. Ideal for 24/7 anti-tracking protection.

$192.20$98.72
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Important things

1.Please install the antenna before using the signal jammers

2.Most Portable cell phone jammers have dip switches on the side. After turning on the main power switch, activate the dip switch—the red or green light will indicate it's on. Each switch controls a specific signal (Refer to the frequency table on the packaging for details).

3.Avoid using the jammer while charging.

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