Common cell phone jammer devices can block signals including:
Cellular network signals: 2G, 3G, 4G and 5G signals, covering frequency bands from 800 MHz to 3.5 GHz and even higher.
Wi-Fi signals: 2.4 GHz and 5 GHz bands.
Bluetooth signals: 2.4 GHz band.
GPS signals: L1 and L2 bands (1575.42 MHz and 1227.60 MHz).
These jammers are mainly used in places such as examination rooms, conference rooms, prisons, libraries, etc. where information leakage or interference needs to be prevented.
How satellite phones work:
Uplink: Satellite phones send signals to communication satellites in orbit.
Satellite relay: After receiving the signal, the satellite forwards it to a ground station or another satellite.
Downlink: The ground station or another satellite transmits the signal to the target receiver (another satellite phone or ground equipment).
Satellite phones use special frequency bands, usually including L-band (1.5-2.5 GHz), S-band (2.5-3.5 GHz), C-band (3.5-7.5 GHz), Ku-band (12-18 GHz), etc. Different satellite phone systems (such as Iridium, Inmarsat, Globalstar) use different specific frequency bands and technologies.
Impact of cell phone jammer s on satellite phone signals
Whether a cell phone jammer device can block satellite phone signals depends on its design and operating frequency band. The following is a detailed analysis:
Frequency band overlap: If the frequency band of the mobile phone signal jammer covers the frequency band used by the satellite phone, it can effectively interfere with the satellite phone signal. For example, the L-band used by some satellite phones overlaps with the frequency band of some cellular networks and GPS signals, and ordinary mobile phone signal jammers may interfere with these satellite phones.
Power and range: The signal strength of satellite phones is usually weak because the signal needs to pass through the atmosphere and reach the satellite in orbit from the ground. Therefore, blocking satellite phone signals usually requires higher-power jammers. Ordinary mobile phone signal jammers have limited power and a coverage range of tens to hundreds of meters, which may not be enough to effectively block satellite phone signals, especially in open environments.
Specific jammers: Some specially designed signal blocking devices can be optimized for specific frequency bands to effectively block satellite phone signals. These devices are often used in military and security fields, requiring high precision and high power output.
Mobile phone signal jammers are designed to block terrestrial cellular network signals, while blocking satellite phone signals requires specific equipment and technology. Although there are certain technical capabilities, they are subject to both legal and technical restrictions in actual application.