If your budget is not enough, this fixed cellphone jamming device that can interfere with CDMA, GSM, DCS, 3G, GPS and other signals is a good choice. This high quality cell phone jammer gives you 10 watts of power output and 5 powerful high gain antennas to block cell phone signals within 50 meters.
Of course, if you also need to interfere with 4G and 5G frequencies, there are powerful high-performance 5G jammers DJ-088 here.
GPS L1: 1570-1580MHz
Output power: 10 watts
Power supply: power plug
Blocking Range: up to 50 meters (depending on signal strength of using area)
Dimensions: 250 x 106 x 33 mm
Warranty period: 1 year
1 x Desktop Signal Jammer
1 x AC Adapter
5 x Antennas
Notice:Make sure all antennas are connected before turning on the power, do not take off the antennas when the machine is working!