Internal construction of a phone jammer

Posted on 4th Oct 2013 @ 9:00 AM

As is known to us, phone jammer is a kind of device used to prevent mobile devices from receiving signals from base stations. Originally designed for law enforcement and military use, phone signal jamming blockers are generally applied for the security purpose that they can prevent the terrorist attacks. How does a cell phone jammer work? In all, they use antennas to send radio waves in the same frequencies that cell phones use. This causes enough interference to make cell phones within the shielding range of a phone signal jammer.

Since cell phone signal jammer is capable of blocking all cell phones in a certain shielding range, what is inside the phone jammer? We are going to tell the internal construction of the cell phone jammer. Electronically speaking, cell phone jamming devices are basic electronic devices, which is much simpler than you think. Most of them have switches to activate jamming at different frequencies. They send signals by the antenna. On more advanced devices, antennas are external to provide longer range and may be tuned for individual frequencies. The main electronic components of a phone signal jamming blocker includes voltage-controlled oscillator, tuning circuit, noise generator, RF amplification. Voltage-controlled oscillator can generates the radio signal that will interfere with the cell phone signal. The tuning circuit controls the frequency at which the jammer broadcasts its signal by sending a particular voltage to the oscillator. Noise generator produces random electronic output in a specified frequency range to jam the cell-phone network signal, which is a part of the tuning circuit. RF amplification boosts the power of the radio frequency output to high enough levels to jam a signal. Don’t forget the power supply. Many palm-sized cell phone jamming devices are battery operated. Stronger devices can be plugged into a standard outlet or wired into a vehicle's electrical system.

For the worldwide customers, we have easy access to the cell phone signal jamming blockers online sales. A simple search will find thousands of phone jammer suppliers. If you take a brief look at these sales, you will find that most of the jammers are the handheld portable types. These phone jammers are cheap ones come in compact sizes so they are always the preferred choices for ordinary customers. The shielding range of a handheld cell phone signal jammer can be from 10 meters to 40 meters. Some of them come with remote control. These portable mobile phone jammers are small and palm-sized, which also fit into a pack of cigarettes, so it is easy to hide. If the annoying cell phones are troubling you, you can choose a phone jamming device at some online shops. They can temporarily create a "dead zone" for mobile phones that you can easily get out of the disturbances of the cell phones.