Mutchus

Before I began the installation of my Yaesu FT-8800 in my car I knew I wanted automatic power ON / OFF. This is a feature that I have always felt was lacking in my other mobile rigs as I am forever leaving my ham radio on long after I have departed the car. Let’s start with an action packed video of the finished product, then we can talk about how we got there. [ ]

Using a mobile phone while driving is dangerous. It is also against the law. However, you can use your mobile phone as a powerful music player with the help of a stereo power amplifier. This does away with the need of a sophisticated in-dash car music system. Most mobile phones have a music player that offers a number of features including preset/ visit page. 44 Watt Mobile Car Stereo Amplifier  

Circuit showing a mobile phone jammer .Here i have used a fm transistor for making this circuit.Mobile phones are working in 450 MHz frequency .Here the transmitter generate almost equal to 450 MHz frequency there for the mobile phone does not identify the original signal but the signal range is very week so this circuit working in only 100 m range .This circuit working in only 450 Mhz .Do not give more than 3 V Circuit Diagram   Part List Component No: Value  Usage R1  100R   Emitter loading R2  39k    Base Biasing C1 15 pf   Frequency  Generating C2 4.7pf   Feedback C3  4.7pf   Feedback C4 102pf   Noise Reduce C5  1MF Coupling C6  2.2pf   Coupling C7     103pf    Decoupling  Q1  BF 494   Amplification L1  22nH  Frequency  Generating Applications * FM Transmission * TV Transmission * Remote Controlled T...

Mobile Automotive Stereo Player Circuit Diagram. Using a mobile phone while driving is dangerous. It is also against the law. However, you can use your mobile phone as a powerful music player with the help of a stereo power amplifier. This does away with the need of a sophisticated in-dash car music system. Most mobile phones have a music player that offers a number of features including preset/manual sound equalisers. They have standard 3.5mm stereo sockets that allow music to be played through standard stereo headphones/sound amplifiers. Nokia 2700 classic is an example.  Circuit diagram : Mobile Car Stereo Player Circuit Diagram A car audio amplifier with 3.5mm socket can be designed and simply connected to the mobile phone output via a shielded cable with suitable connectors/jacks (readymade 3.5mm male-to-male connector cable is a good alternative). Fig. 1 shows the circuit of car stereo player. It is built around popular single-chip audio power amplifier TDA1554Q (IC1). The ...

This is an electronic circuit project of  gsm jammer or mobile cell phone. This  jammer schematic diagram for use only in GSM1900 with frequency from 1930 MHz to 1990 MHz. The GSM1900 mobile phone network is used by USA, Canada and most of the countries in South America. Mobile Cellphone Jammer Circuit Diagram: This cell phone jammier is not applicable for use in Europe, Middle East, nor Asia. The GSM jammier circuit could block mobile phone signals which works on GSM1900 band, also called DCS. For more cell phone jammers check the related posts.