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Signal blocker Jamming Explained

Signal interference is a physical quantity that represents messages in current communications. For example, electrical signals can represent different messages through changes in amplitude, frequency, and phase. Regardless of factors such as attenuation, delay, and noise, the signal through this channel will be undistorted. However, if a square wave with a fundamental frequency of 1kHz, the signal jammer will definitely be distorted through the channel; if the square wave signal has a fundamental frequency of 2kHz, but the highest harmonic frequency is 18kHz, the bandwidth exceeds the channel bandwidth, and its higher harmonics will be filtered out by the channel.

The signal bandwidth defines the lower limit frequency and upper limit frequency of the signal that is allowed to pass through the channel, that is, defines a frequency passband. For example, the allowable passband of a channel is 1.5kHz to 15kHz, and its bandwidth is 13.5kHz.The bandwidth only needs 5kHz, which is much smaller than the channel bandwidth. Can it pass the channel well? In fact, when the signal is transmitted on the channel, the fundamental frequency is filtered out, and only the harmonics can pass through, and the signal waveform must be Unattractive.

Desktop 12 Bands Phone Signal Jamming Multiple Frequencie

Multiple Frequencies Jamming

The jammers are customized according to the frequency bands of different countries, please confirm that the purchase country and the actual use country are consistent. Otherwise it can not be used.Please read the jammer function before purchasin

$2830.34$4667.12

Newest 24 Band Portable Jammer Blocks All Cell Phones 5G 4G 3G 2G

Portable Jammer

World First 24 Antennas all-in-one design wireless signal Jammer with nylon cover for portable, jamming all types of Android phones, Tablets, Smart Phones, iPhones, Win phones etc. that use 2G, 3G, 4G 5G, and CDMA 450Mhz

$1015.03$3015.87

10 Antenna Handheld Adjustable Cell Phone Signal Jammer

10 Antenna Signal Jammer

Hand held signal shielding device is our factory using advanced technology, for the contiuous developmentof communication standards, according to the actual situation of domestic and international wireless ommunication to develop

$460.43$1048.57

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