FEB7
GSM Phone Jammer Circuit Schematics
Here is a very simple plan to make a "dirty transmitter" that is also known as Cell Phone Jammer.
It is based on NE555 as simple noise-maker whose output is fed to a single transistor oscillator. The oscillator is designed to operate between 800MHz and 2GHz which happens to be the frequency span used for GSM phones. The frequency of operation is set with a trim-capacitor.
The battery should last no longer than 1 hour and the range of jamming is around 10-15 feet.
similar content
- Interface rotary phone dial to PIC (15-02-2009) [@News]
- Phone line recorder project published (02-03-2010) [@News]
- Microphone amplifier with parabolic plate (22-02-2004) [@Schematics/Audio devices]
- Tiny GSM alarm system (01-09-2009) [@Projects]
- Telephone line recorder v1 (20-02-2004) [@Schematics/Telephone circuits]
- Telephone line guardian v1 (20-02-2004) [@Schematics/Telephone circuits]
- Cordless phone receiver v2 (14-02-2004) [@Schematics/Radio receivers]
- Controling relays over phone line (21-12-2007) [@News]
- Alarm alerter over phone line (17-02-2007) [@News]
- GSM sniffer (09-04-2004) [@Schematics/Everything else]
comment [1]
- From commi on 04-03-2012 at 20:14:48
molim vas ako pokusate da mi javite rezultate na dr.cumpek7@gmail.com, hvala unaprijed!
IP: n/a

