Cellular Phone Jammers

Can you hear me now?    No.    Good.

Devices to jam the downlink frequencies on various cellular telephone systems.  Prevents the cellular phone user from sending or receiving phone calls within the small jam radius.  Advanced electronic and RF engineering technical skills will be required.

Unfinished documents

Schematics

Datasheets

Pictures

Notes

Other Countries

Notes

the max vco 2623 was sufficient to work from freq range of 700mhz-1100mhz. we introduced a control for diff sweep freq by varying the capacitance value of 555 timer ic in its astable mode of operation.the sweep best suited was 100khz and not 1khz.rest the remaining part was same we used pf08103b as the power amp instead of pf0030 .

Commercial Jammers / Disablers

Cellular Phone/GPS "Burst" Tracking Device Jammer