use area
biggest prison , bigger ground , battalion as well as illegal congregation , illegal demonstration , military rehearse, special action etc and this kind of jammer with big direction antenna which can be put on a car and it uses 9U or 12U standard tank and easily operates safety.

Output Power: Up to 900 Watts
Range jamming: 250m to 500m (At standard environment)
Internal Modulation: FM Hopping Frequency and Sweep
Power Supply: 220V AC/ 12-27V DC
Sweep rate: Fixed
Remote Control: ON/OFF per band
Antenna: External Omni-Directional Antenna
Power Amplifier Protectors: Over Heat , Thermal protector
Jamming Frequency Range
Frequency Band: 80-2500MHz, Full band jamming , all the RF Signal
Environment of operation
Operating Temp: -10 C - +65 C
Humidity: 5% - 80%

Technical Specifications
and as for band 20-3000 mhz, we always make it as following
 
20-80     mhz
80-200    mhz
200-500   mhz
500-800   mhz
800-975   mhz
975-1450  mhz
1450-1925 mhz
1925-2400 mhz
2400-3000 mhz