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Section 1.The basic conditions for installing a mobile phone signal booster:
1. First, it is necessary to determine that the wireless communication network format of the installation area meets the standard format of the amplifier we provide. For example: (The GSM900MHz communication system needs to choose a GSM mobile phone signal amplifier, and the general frequency of the GSM mobile phone signal amplifier is 890MHz-915MHz for uplink and 925-935MHz for downlink. The DCS1800MHz communication system needs to choose a DCS mobile phone signal amplifier, and the general frequency of the DCS mobile phone signal amplifier is: 1710MHz-1785MHz for uplink and 1805-1880MHz for downlink. Of course, there are also 3G communication systems, CDMA communication systems, TD-SCDMA communication systems, W-CDMA communication systems, and so on, which must choose the corresponding mobile phone signal amplifier.
2. Ensure that the signal at the outdoor antenna end of the mobile phone signal amplifier is above -60dBm, and ensure that the distance from the outdoor antenna end to the communication company (transmitter, cell tower, base station) is within 5 kilometers.
3. The high-frequency signal transmission cable from the outdoor antenna to the amplifier should be selected from 50-ohm to 7G or above coaxial cables, and ensure that the line shall not exceed 50 meters. (The outdoor antenna must match the output frequency of the mobile phone signal amplifier, generally using an eight-barrel directional antenna).
4. The high-frequency signal transmission cable from the amplifier to the indoor antenna should be selected as 50-ohm 7-conductor coaxial cable, and it is necessary to ensure that the line distance at the farthest point does not exceed 80 meters. (The indoor antenna must match the output frequency of the mobile phone signal amplifier, and generally uses a ceiling-mounted mushroom antenna).
5. The frequency of the power divider used for indoor coverage should be greater than the frequency of the amplifier installed (generally, a divider with a frequency of 800-2500MHz is selected, as this divider covers almost all the frequencies of the current communication networks).