Dod Cell Phone Jammer
If you dial the phone from the unshielded area to the shielded area, you will often walk into the shielded area for a considerable distance before the mobile phone is completely shielded. This is because once the mobile phone is dialed, the mobile phone itself has the ability to resist interference. This kind of anti-interference will make the mobile phone adjust its transmitting power to ensure the normal call this time. Therefore, it is generally not recommended to perform dynamic testing in the call state, but to perform static testing at various points. Prepare mobile phones with multiple frequency bands, including: China Mobile GSM, China Unicom WCDMA, PHS, 3G (preferably three types of 3G: Mobile TD-SCDMA, China Unicom CDMA2000, Telecom WCDMA), then turn on the mobile phone signal jammer, and hold For each mobile phone, test the effective shielding radius of the mobile phone jammer and the shielding distance in multiple directions from the Dod Cell Phone Jammer installation position from near to far. cell phone jammer
The signal jammer effectively shields CDMA (China Telecom), GSM (China Mobile, China Unicom), SCDMA (Netcom Da Lingtong), DCS (1800MHz), PCS (1900MHz), PHS (Telecom PHS), 3G mobile phone signals, 4G mobile phones Signal, 24GWIFi, 5.8GWIFI, UHF, VHF walkie-talkie signals and other mobile communication signals. Within a certain frequency range, the mobile phone and the base station are connected by radio waves, and data and sound transmission are completed with a certain baud rate and modulation method. Dod Cell Phone Jammer Communication principle, the mobile phone jammer scans from the low end frequency of the forward channel to the high end at a certain speed during the working process. This scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as a search network, no signal, no service system and other phenomena.