Verizon Cell Phone Block Number From Calling Blocking Strength Is Different
Verizon Cell Phone Block Number From Calling The shielding range is based on the power of the device. If the shielding range is different according to the strength of the local environmental signal when testing in the field, for example, the weak shielding range of the indoor signal is large, and the outdoor accessories have a GSM base station or something, then the GSM signal The outdoor shielding range is near! As we all know, 2G, 3G and 4G: Before buying, you need to know which signals you want to block. Ordinary mobile phone signals (234G) can be selectively blocked. If you only block 23G or only 34G, this is OK Adjusted before leaving the factory, there are also 2.4GWIFI, 5.8GWIFI and other frequency bands. Generally, ordinary signals can be quickly shielded. Shielded frequency bands: CDMA800, GSM900, SCDMA1800, DCS1800, PHS1900, TD-SCDMA (Mobile 3G), CDMA2000 (Telecom 3G), WCDMA (Unicom 3G).
Generally divided into small output power, medium output power, and high power. Small output power: total output power 3W-80W. Medium output power total output power 80W-160W, high power: total output power 160W-800W. In addition to the requirements of unique places, it is generally not recommended to use signals with high power Verizon Cell Phone Block Number From Calling , which will seriously affect the signal transmission of the communication base station, and also have a certain degree of radiation source for the body. Like the college entrance examination room and conference hall, it is recommended to use a small output power. Even if a small output power cell phone jammer can not achieve the actual effect in many areas, you can choose several multi-tube sets. In that way, the actual effect is better than the actual effect of using a single Taiwan Taichung output power or power, and the radiation source is not so large.
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