Cell phones exist almost everywhere in this current world. It is important to be able to make a call to anyone at whatever time you want. Unfortunately, most movie theaters, restaurants, concerts, churches and shopping malls suffer from the large use of cell phones as not every cell phone user recognizes the time to stop talking. The necessity to limit cell phone users from using their phones in such areas has forced the premise owners to employ the use of cell phone jammers.
A cell phone jammer is an instrument employed to forbid cellular phones from obtaining signals from their service provider base stations.
Operation of a cell phone jammer
Jamming a cell phone is similar to disrupting any kind of radio communication. A mobile phone operates by communicating with the service provider via a base station or a cell tower. Cell towers separate a large area into cells or small areas so as a mobile user moves from a location to another, so is the signal of the phone. The base station passes the signal from one tower to the other. A cell phone jammer broadcasts a similar radio frequency as the mobile phone thus interrupting communication between the base station and the cell phone. We call this action “denial of service assault”. The cell phone jammer restricts the radio spectrum from reaching the cell phone within the range of the jammer.
A cell phone jammer overpowers the cell phone by channeling a signal on a similar frequency as the cell phone but at a higher power thus making the signals to clash and cancel one another out. When a cell phone experiences a low-level interface, it normally tries to add power but the jammer also recognizes the added power and reacts by matching the added power in the mobile phone.
Cell phones operate on two different frequencies, one for listening and the other for talking simultaneously. Some jammers only block one pathway thus affecting both frequency channels. When the jammer blocks one frequency pathway, the cell phone will think that there is lack of service because it will only be able to get one frequency.
Less complex jammers will bar only a single group of frequencies while sophisticated ones will bar different networks at once. Such sophisticated jammers block tri mode or dual mode phones that exchange networks automatically to get an open signal.
Power of a cell phone jammer
The factual range of a cell phone jammer depends on the local environment like buildings and hills that may block the jammer signals and the power of the jammer. A low powered jammer has a range of about 9 meters while the high-powered jammers have a range about the size of a football pitch. Jammers utilized by law enforcement officials can jam up to a range of 1.6 kilometers.
Components of a cell phone jammer
a) An antenna to send signals and to provide longer range for individual frequencies.
b) Electronic circuitry such as a tuning circuit, a voltage controlled oscillator, noise generator and an RF amplifier.
c) Power supply that may be from batteries or a standard power outlet.
You should always check your cell phone. If your phone’s battery is okay and you are unable to make a conversation, try walking a few steps from where you are standing as you may be in the range of a jammer.