ネタ | Cell phone jammers block some nasty signals道場 | ホビー・ゲーム | まにあ道

The time before smartphones is often remembered fondly, as it was a period when communication relied on personal interactions and letter writing. In contrast, the current era is dominated by mobile technology, where we regularly take photos, share them on Facebook, and observe the lives of others. Furthermore, the use of mobile phones has become prevalent in educational institutions, as well as in dining establishments, theaters, and places of worship.

Mobile phones can be a source of distraction in the work environment. This is reflected in the productivity levels of certain manufacturers that have instituted bans on mobile phone usage, resulting in notably higher output. Therefore, it may be beneficial to consider the use of a signal jammers to prevent mobile signals, thereby enhancing employee productivity. It is vital to take concrete steps to ensure that mobile phone usage is healthier and more systematically regulated.

The convenience provided by mobile phones is undeniable; however, this convenience often leads to increased dependency on these devices. This dependency can give rise to poor habits, such as using phones solely before walking or sleeping, and during family interactions. These habits are indeed harmful. As a result, it is essential to regulate mobile phone usage to ensure a healthy lifestyle for both individuals and organizations.

Why can you still receive full signal when the signal jammer is working?

Approximately 30 seconds are required for the phone jammer to effectively block the signal. Once this time has passed, your phone will be unable to make or receive calls. This inquiry is one of the most common among our customers, who often recognize that their mobile phones are indicating a false signal.

A mobile phone base station consists of a mobile switching center (MSC) and a number of base stations (BS) that it supervises. Each base station is provided with a receiver and a transmitter. While the radio signal from the base station creates a circular area of coverage, the actual effective range of each base station is defined as a regular hexagon centered on the base station. Consequently, the combined coverage of all base stations can be represented as a configuration of neighboring regular hexagons.

Hence, mobile communication is identified as cellular communication. In terms of the mobile phone present in each cell, it communicates with the base station via the uplink frequency of the channel, which then forwards the signal to the Mobile Switching Center (MSC) to facilitate communication with other mobile phones.

Each frequency band is divided into many channels with specific bandwidths. Each cell uses several channels, one of which is called the broadcast control channel (BCH) and the other is called the traffic channel (TC). When the mobile phone is in standby mode, it intermittently starts the receiving circuit to receive the BCH of the cell where it is located. According to the field strength of the BCH signal, the signal strength indication is displayed with a signal bar. When making an outgoing call, first ask the MSC for instructions through the BCH, and the MSC handles the caller or the called party. The MSC assigns a service channel to the mobile phone based on the channel conditions in the cell, allowing the mobile phone to jump from the BCH to the service channel, and a call between the two parties is established.