Wireless signal jammer
Encyclopedia
Wireless signal jammers are devices used to disrupt radio
signals. The low cost of manufacture of wireless signal jammers and their damaging effects have added to their popularity and frequent use.
Jammer Device Method:
Intentional communications jamming is usually aimed at electrical signals to disrupt control of a battle. A transmitter, tuned to the same frequency as the opponents' receiving equipment and with the same type of modulation, can, with enough power, override any signal at the receiver.
The most common types of this form of signal jamming are random noise, random pulse, stepped tones, warbler, random keyed modulated CW, tone, rotary, pulse, spark, recorded sounds, gulls, and sweep-through. These can be divided into two groups – obvious and subtle.
Obvious jamming is easy to detect because it can be heard on the receiving equipment. It usually is some type of noise such as stepped tones (bagpipes), random-keyed code, pulses, music (often distorted), erratically warbling tones, highly distorted speech, random noise (hiss) and recorded sounds. Various combinations of these methods may be used often accompanied by regular morse identification signal to enable individual transmitters to be identified in order to assess their effectiveness.
The purpose of this type of jamming is to block out reception of transmitted signals and to cause a nuisance to the receiving operator.
Subtle jamming is jamming during which no sound is heard on the receiving equipment. The unit does not receive incoming signals yet everything seems superficially normal to the operator. These are often technical attacks on modern equipment, such as "squelch capture".
Radio
Radio is the transmission of signals through free space by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space...
signals. The low cost of manufacture of wireless signal jammers and their damaging effects have added to their popularity and frequent use.
Use for denial of service
Wireless signal jammers are most often used to interfere with wireless local area networks (WLAN), a type of denial of service (DoS) attack. Advanced and more expensive versions are used to jam satellite communications. The Wireless Signal Jammer Device can be used to temporarily stop transmission, temporarily short out or turn off the power during the usage of units. These include Radios, Televisions, Microwaves, or any unit that receives electrical signals for operation.Jammer Device Method:
Intentional communications jamming is usually aimed at electrical signals to disrupt control of a battle. A transmitter, tuned to the same frequency as the opponents' receiving equipment and with the same type of modulation, can, with enough power, override any signal at the receiver.
The most common types of this form of signal jamming are random noise, random pulse, stepped tones, warbler, random keyed modulated CW, tone, rotary, pulse, spark, recorded sounds, gulls, and sweep-through. These can be divided into two groups – obvious and subtle.
Obvious jamming is easy to detect because it can be heard on the receiving equipment. It usually is some type of noise such as stepped tones (bagpipes), random-keyed code, pulses, music (often distorted), erratically warbling tones, highly distorted speech, random noise (hiss) and recorded sounds. Various combinations of these methods may be used often accompanied by regular morse identification signal to enable individual transmitters to be identified in order to assess their effectiveness.
The purpose of this type of jamming is to block out reception of transmitted signals and to cause a nuisance to the receiving operator.
Subtle jamming is jamming during which no sound is heard on the receiving equipment. The unit does not receive incoming signals yet everything seems superficially normal to the operator. These are often technical attacks on modern equipment, such as "squelch capture".