• GSM900 cellphone signal repeater booster full kits System 1
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GSM900 cellphone signal repeater booster full kits

GSM900 cellphone signal repeater booster full kits

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Min Order Qty:
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Supply Capability:
5000 pc/month

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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!
Features:
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.
Specification:
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%
Packing:
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:

1.
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.


Q:What is the role of optical repeaters in fiber communications?
Optical signal transmission in optical fiber will have loss and dispersion, and non line letter effect will affect the transmission distance and capacity. The loss will affect the signal amplitude, and the dispersion will lead to fiber bandwidth broadening and error codeIn order to long-distance transmission must join the optical relay system in optical fiber transmission line, transmission loss and dispersion is used to compensate the signal. If not, the signal in long-distance transmission is too small and the occurrence of serious error, the receiver can not successfully received.The high cost of optical relay, optical amplifier after the optical amplifier is generally used instead of optical relay, commonly used Amplifier EDFA and Raman amplifier (EDFA), also have the dispersion compensation of dispersion compensation amplifier new.
Q:How many repeaters can Ethernet use at most?
As a result of loss, the signal power transmitted on the line will be gradually attenuated, attenuation to a certain extent will cause signal distortion, and this will lead to a reception error. Repeaters are designed to solve this problem. It completes the connection of the physical circuit, amplifies the attenuated signal and remains the same as the original data. In general, both ends of the repeater are connected to the same media, but some repeaters can also do the switching of different media. Some brands of repeaters can connect cable segments of different physical media, such as thin coax cables and fiber optic cables
Q:What does the subway rep repeater mean?
Increases the maximum number of nodes.Each segment can use different communication rates.Improved reliability. When a network fails, it usually affects individual segments only.Performance has been improved.The disadvantage is that the relay increases the delay when the received signal is restored (restored) to the state at the time of transmission.The MAC sublayer of the CAN bus does not have the flow control function. When the load on the network is very heavy, it is possible to overflow due to insufficient storage space in the buffer in the repeater, resulting in frame loss.If a repeater fails, it will have an impact on the work of the two adjacent subnets.
Q:What are the layers of routers, switches, repeaters, gateways, bridges and so on?
Network layer - data packet, ROUTER (router or three layer switch: exclusive bandwidth, segmentation collision domain, split broadcast domain)Transport layer data segment, 4 layer switching: port number, gateway
Q:How to set up slow relay network?
First let you understand that wireless repeaters are required to reduce the WIFI bandwidth after the relay. First, let's explain why the repeater can extend the coverage of the 802.11 network, but be sure to pay attention to some problems. One important thing to note is that the relay must receive and forward frames on the same channel, which means that your bandwidth is actually split in two. Although the scope is more important than bandwidth, the rate of transmission over the remote client will be as low as 1Mbps. Because of the overhead of 802.11, only about half of the bandwidth can be used for data transmission. Because of the repeater, bandwidth is once again divided into two halves, especially when multiple users share the same channel, and thus you experience bandwidth problems. (you don't understand this.)
Q:How to make a notebook wireless relay
XP system is not available, you can use win7, 8 systems have their own trunking function. But the cell phone still doesn't work.
Q:Relay function of wireless router
This setting is complete, you can click on the router interface working state, the normal connection is successful, as shown in the Internet mode is displayed, the relay mode, WAN port state will show the acquisition signal.
Q:What is a WiFi repeater and how do you get it?
WiFi relay, that is, to receive the WIFI signal, and then launched. Is to relay wireless signals, increasing the coverage of wireless signals.
Q:Why is a wireless router sent by telecommunication disconnected from the network?
Access point B, as a wireless signal source, is set to the basic AP form. Therefore, the location can be either a wireless router or a wireless repeater. Let's take the TL-WR340G+ wireless router as an example.First, use the router's default management address, 192.168.1.1, to access the router management interface. Then click the basic settings in the wireless parameter to see the router's wireless configuration at this time. Write down the SSID number of the wireless network, "TP-LINK_74971E""At the same time, the MAC address of the wireless state is recorded in the running state of the management interface. 00-21-27-74-97-1E"At this point, the wireless router does not need to do any other settings.
Q:What does wireless relay mode mean in routers?
First of all, you should know the wireless router A wireless network name (SSID), wireless cryptography, encryption, channel, MAC address and other information, this information will be used in subsequent settings process. Check method: login A wireless router management interface - > click "running" -- > "wireless equipment view state, write down the wireless network SSID number (in this case TP-LINK_2026BC) and wireless state MAC address (in this case E0-05-C5-20-26-BC), click on the" wireless set "-- >" wireless security settings, and then check the wireless encryption and PSK password, and recorded.

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