Lebanon communication equipment explosion: dual test of magnets and technological security
On September 17, 2024, pager explosions occurred in the Lebanese capital Beirut and multiple areas, followed by explosions of communication equipment such as walkie talkies the following day
These events have caused a large number of casualties and property damage, attracting widespread attention from the international community. According to reports, the exploded communication equipment included ICOM V82 walkie talkies, reportedly made in Japan
.
In communication devices such as walkie talkies, magnets play an important role.https://www.magnet-forever.com/product/hard-ferrite-sintered-permanent-magnets Magnets are not only used in speakers and microphones to convert electrical signals into sound signals, but may also involve other magnetic components of the device
However, the presence of magnets may also have an impact on the performance of communication devices. According to the discussion on the mineral radio forum, permanent magnets may affect the inductance of the internal inductance of the walkie talkie, which may lead to changes in the receiving and transmitting frequencies
Magnets have multiple uses in communication equipment, and the following are some specific applications:
1. Data storage: In computers and electronic devices, magnets are used for data storage on hard disk drives. They represent computer data by changing the direction of magnetic materials on the hard drive, and then the computer reads the direction of these magnetic materials to 'read' the data
.
2. Speakers and microphones: In devices such as computers, televisions, and radios, small speakers use magnets to convert electronic signals into sound vibrations. Microphones may also use magnets to convert sound signals into electrical signals
.
3. Electromagnetic induction: Magnets play a role in the electromagnetic induction of motors, which is a common technology in many communication equipment motors, such as providing a constant magnetic field for electromagnetic induction of motors
.
4. Sensors: Magnets are also used in various sensors, which are used in communication devices to detect and measure different physical quantities such as magnetic fields, positions, velocities, etc
.
5. Magnetic components: In communication equipment, magnets may be used for magnetic switches, relays, and other magnetic components, which play a magnetic guiding role in the conversion of electrical energy parameters in circuits
.
6. Magnetic head: In magnetic recording technology, the magnetic head utilizes the principle of magnetic interaction to read and write data, which is particularly important in old-fashioned tape recorders and certain types of storage devices
.
7. Magnetic materials: Some components in communication equipment may use magnetic materials such as ferrite, which are widely used in electric motors, generators, electronic and microwave equipment, acoustic equipment, information storage, mobile communication, and other fields
.
8. Magnetic shielding: Magnets can also be used for magnetic shielding of communication devices to reduce interference from external magnetic fields on the internal circuits of the devices