GSM900 Signal Band Mobile Signal Booster Amplifier Repeater full kits

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Product Description:

Application photoApplication:
To expand signal coverage of GSM900 which signal blind areas where signal is weak or unavailable.
A cheap and immediate solution that would allow them have clear phone calls or higher speed broad band.
No more dropped calls ! No more poor reception !
No more runing to the windows or going outside to talk on your mobile phone !
Now you can reach everywhere with signal boosters!
1. 300~1500 square meters indoor coverage.
2. Frequency bandwidth of 900MHZ.
4. Full-duplex mode (improvement of out coming and incoming )signal.
5. Low power consumption and avoid to interference to BTS.
6. LED indicate and judge to signal level of uplink and downlink.
7. Compatibility with CE and RoHS standards .
8. Supports up to (30) users / calls simultaneously.
Indoor coverage : 300-1500 m2
Frequency Range :890-915MHz  935-960MHz
Up-link Gain: 60dB
Down-link Gain: 65dB
Output Power UL: 20dBm, DL: 20dBm
Band Flatness: ≤±6
ALC: 31dB @ 1dB step
Time Delay: 1 us
Spurious Emission: Out-Band ≤-36dBm
Power Supply: AC110V~220V to DC+5V/2A
Working Temperature: -25 to+55 C
Humidity: 5-95%
1. Repeater unit with power supply.
2. Fiberglass outdoor antenna.(    Optional)
3. Panel indoor antenna.(Optional)
4. 5m and 15m RF cables.(Optional)
5. A manual.

Warranty & Return Policy:

Warranty covers replacement within 12 months.

2. All returns must have an RMA number before they are returned to us. If product is received without an RMA number
it will not be processed.

3. You must place the item(s) including all accessories to be returned in protective packaging (shipping box) with bubble
wrap and make sure that the item(s) do not shake or rattle. Items that are sent in envelopes and incorrect shipping
containers will be refused and returned at your expense.

4. All unauthorized, no reason, etc. returns are subject to 10% restocking fee.

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Q:Wireless repeaters are restored to initial strength regardless of how weak the signal is What is the principle of a wireless repeater?
The radio relay station works by receiving signals from the higher ups and then amplifying them and then transmitting them to the next level via the transmitting antenna!In the distance to receive the weak signal relay station! To receive signal reliability Bao zheng!The intensity attenuation of radio signals is the intensity loss in radio transmission. Attenuation is related to the intensity and frequency of waves, the topography and distance, and even the weather!
Q:WIFI wireless relay coverage
Wireless repeater is an effective solution to the problem of signal damage and attenuation. For example, a repeater provides a connection that reaches the remote range, which does not have access to the wireless network. Perhaps the router in your home or office does not cover the entire range of wireless users that need to be connected, such as a yard or basement. Placing a repeater between coverage and non coverage ranges provides connectivity within the full space range. Because wireless repeaters add holes to coverage.
Q:How can the submarine fiber optic relay relay power supply?
Domestic relay manufacturers, I really do not know, at least submarine fiber optic cable relay, I really do not knowI am Shanghai YOFC, I was the first brand of domestic cable
Q:How does the relay set up the connection WiFi?
Use the new address to log on the route, open its wireless, set up and wireless bridging routers like the channel, SSID, password type, password and other data, turn off its DHCP and tick WDS,Then fill in or scan the broadcast name of the higher level wireless router and other data.Almost. For these basic steps, don't forget to save the settings.
Q:RS485 photoelectric isolation relay
RS-485 signal after transmission distance or load device with a certain number of signal strength, will have the corresponding attenuation when the signal attenuation to a certain extent, RS-485 interface chip can detect the corresponding signal, resulting in communication failure.
Q:How do I modify the WiFi repeater password?
Knowing that the WiFi password can only connect to the router does not necessarily make you enter the router settings.
Q:Routers, repeaters, two computers are connected, and how to form a LAN
Routers do not have special settings (but to open the DHCP service), and the repeater uses the AP mode (to turn off the DHCP service and modify the repeater LAN address with the same network segment of the router, but not IP).If wireless, it's simplerRouters do not have special settings (but to open the DHCP service), and the repeater relays the signal to the main router via the wireless signal in the relay mode, and forwards the signal.
Q:How to relay submarine fiber optic cables?
At present, the number of fiber pairs in each submarine cable is limited to 4 or 8. In addition, the housing standard repeater can accommodate 8 fiber amplifiers, but the 4 is enough for optical fiber, and the shell model can accommodate the repeater optical amplifier this is more than 8 times, is suitable for occasions of fiber. Amplifiers with relay submarine cables are typically about 50 kilometers apart, about half the length of the land long haul fiber optic cable system. This is necessary because the length of the submarine optical cable system is often thousands of kilometers, much longer than that of terrestrial optical fiber cables. In submarine optical fiber cables, the gain of optical amplifiers should be kept at a low level, usually only about 10dB, which is to control the spontaneous emission noise and nonlinear effects of amplification, and these effects are accumulated along the length of optical fiber cables. The input power of high and low gain power is helpful to balance the entire spectrum of the optical amplifier, this point is very important, because after the 100 amplifier, small gain difference will accumulate a huge problem. The Raman amplifier in the last section of the optical fiber can not only amplify the signal of the optical amplifier, but also realize the gain equalization in the whole WDM spectrum. The current submarine optical fiber cable system uses only C band erbium doped fiber amplifier, but because of the increase of single channel rate and multiplexing wavelength, the capacity of submarine WDM system has been greatly improved. Early WDM submarine fiber optic system, each fiber transmission 4 2.5Gbit/s channels, such as 4 pairs of optical fiber, the total capacity
Q:Is the repeater good for amplifying signals or good for routers?
Distance can be used short relay 3, slightly by
Q:What is the difference between relay and bridge?
Wireless bridge connection is generally just point to point or point to multipoint signal wireless data transmission. Normally。 Links between small LANs used primarily for two different locations. Used for remote network point to point or point to multipoint data communication.. And. In order to ensure the stability of bridge. Normally。 When the device opens the bridge function, it will close the intervention function of the common network card. That is, peer to peer communication. Wireless devices cannot be connected wirelessly.

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