Arduino GSM Jammer

Simple Arduino-Based GSM Jammer (900 MHz Band)

This project demonstrates a simple and compact method to sweep RF frequencies in the 900 MHz cellular band using an Arduino microcontroller combined with a Voltage-Controlled Oscillator (VCO). (Note: To target the 1800 MHz band, you can easily substitute an appropriate higher-frequency VCO).

Circuit Principle

• Square Wave Output: The Arduino generates a continuous square wave on Pin 10.

• VCO Tuning Range: This signal is fed directly into the VCO's tuning voltage input. By sweeping the voltage from 0.5V to 5V, the VCO output frequency covers the target range from 870 MHz to 980 MHz.

Arduino Source Code

Copy and upload the following code to your Arduino board:

C++

void setup() {
  // Initialization not required for basic tone generation
}

void loop() {
  // Generates a square wave signal on Pin 10 at 15 kHz
  tone(10, 15000); 
}

📺 Project Demonstration Video

• Watch in Action: YouTube Video Demonstration

KSF ELECTRONICS: Bluetooth auto connect in MIT App (obaidkakar.blogspot.com)

Arduino SIM800L IMEI change

https://obaidkakar.blogspot.com/2022/05/arduino-sim800l-imei-chaging.html?m=1

1).MVCO944 (870 Mhz - 980 Mhz)

2). BFG591 or SXA389  RF Transistor 4-7GHz ,1.5 Watts

1).The transistor used in this project must be working on high frequencies , any other type transistor can be used.

Power supply must be 5vdc

Components used: