U.S. military committed to electronic warfare (EW) jammers to counter enemy GPS and drone signals
The Military & Aerospace Electronics take:
5 Sept. 2019 -- the potential effects of GPS jammers are not widely known, yet the threat gets bigger the more we rely on GPS. As a result, more and more countries are committed to developing GPS interference devices.
Because military signal jammer gains the upper hand in an electronic jamming war will determine the course of the war.
The U.S. Government is buying one hundred portable drone jammers to protect government facilities, property and personnel. The jammer interferes with the drone's radio controls, avoiding dangerous alternatives involving bullets and other projectiles.
Military GPS jamming as a combination consumes enemy communications, targeting accuracy, surveillance capabilities, and navigation reliability. it is also used
Aggressive and political acts of harassment and intimidation in disputed territory or nearby military training exercises.

There is growing concern about widespread access to and use of small
Pocket "privacy-seeking" jamming devices, and the potential for homemade jamming devices. Privacy-seeking jammers are often used by drivers
The trucking industry prevents their managers from tracking their location and can
Make purchases online. These small interfering devices cover a distances from a few meters to 9 miles.