An intercom signal jammer is a device used to block the transmission of intercom wireless signals. It is often used to ensure information security, maintain order or prevent external communication interference. When choosing a suitable intercom signal jammer, you need to conduct a comprehensive evaluation based on factors such as application scenarios and device performance.
Application scenario factors
- Indoor occasions: Indoor environments such as conference rooms, examination rooms, and cinemas usually need to shield intercom signals within a certain range. The power of the signal jammer device does not need to be too high, but it is necessary to ensure that the signal completely covers the entire space.
- Outdoor occasions: Such as sports events, large concerts or public events, the shielding range is wide, and the power requirements for the equipment are high, so the intercom signal jammer needs to cover a larger area.
- Special occasions: such as military bases, prisons or other high-security places, in addition to conventional signal shielding, it may be necessary to consider the interference ability of the shielding device to multiple frequency band signals.
Shielding frequency band range
The common walkie-talkie frequency band consists of UHF and VHF. UHF is the abbreviation of Ultra High Frequency, which refers to ultra-high frequency radio waves. UHF refers to a frequency of 300~3000MHz. VHF is the abbreviation of Very High Frequency, which refers to radio waves with a frequency of 30Mhz to 300MHz. In walkie-talkies, the UHF frequency band range is usually between 400-470MHz, and VHF is between 136-174MHz.
Simply put, the biggest difference between the two frequency bands is that the UHF band is characterized by poor diffraction and strong ability to penetrate buildings, which is suitable for cities with tall buildings. VHF is characterized by good diffraction and weak ability to penetrate buildings, which is suitable for open fields and offshore operations. To put it simply, the wavelength characteristics of the two bands are complementary. UHF is suitable for cities, and VHF is suitable for open areas.
When selecting a signal jammer blocker, you should ensure that the intercom signal jammer device can cover the required frequency range based on the frequency band of the target walkie-talkie.
Power output and shielding range
The power output of the jammer blocker directly determines its shielding range. The greater the power, the wider the shielding range, but at the same time it may increase the size and power consumption of the device. When choosing, you should consider whether the power of the device meets the actual needs.
The above are the factors that need to be considered when choosing a suitable walkie-talkie signal jammer.
