how to block gps tracking signal

Brand Name:Vodaafe

Model Number:P24

Place of Origin:China

... With Nylon Cover, Blocking 2G 3G 4G 5G Wi-Fi GPS UHF VHF, 24 Watts Jamming up to 30m Product description: The latest 24bands with 24 antennas all-in-one design wireless signal Jammer with nylon cover for portable, jamming all types of Android phones,

Brand Name:Greetwin

Model Number:GW-JU1

Place of Origin:China

...Tracking U Disk Locator Signal Jammer For Tracker Blocking Product No.: GW-JU1 This kind of mini USB GPS JAMMER GW-JU1 is designed with a standard USB port (to be plugged into any USB power supply devices). The excellent heat dissipation system enables it to work for hours without getting overheated. This product has a built-in signal...

Brand Name:Wolvesteam

Model Number:JM171519

Place of Origin:China

...Signal Jammer Black Product Description Start from this station, you will get rid of the boring life full of annoying phone calls. Equipped with high efficient antenna, this 5-Band Portable 3G Cell Phone Signal Jammer is specially designed for blocking all GPS, GSM, CDMA, DCS system signals up to 10m radius. What's more amazing! This portable 3G cell phone signal jammer can keep you from being tracked by GPS...

Brand Name:Wolvesteam

Model Number:JM171519

Place of Origin:China

...Signal Jammer Black Product Description Start from this station, you will get rid of the boring life full of annoying phone calls. Equipped with high efficient antenna, this 5-Band Portable 3G Cell Phone Signal Jammer is specially designed for blocking all GPS, GSM, CDMA, DCS system signals up to 10m radius. What's more amazing! This portable 3G cell phone signal jammer can keep you from being tracked by GPS...