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05/03/2013

HUAWEI E3276s-151 4G LTE Cat4 USB Stick Specifications

As the first LTE Cat4 USB Modem in the world, HUAWEI E3276 attracts the eyes of the world when it’s first released by HUAWEI, the top telecom equipment supplier from China. The typical feature of the LTE Cat4 is that the LTE devices could support maximum download speed to 150Mbit/s, which increase the 50% speed than the current LTE speed. This speed is even 10 times faster than 3G.

   

Under this speed, users could surf and link to internet in awful experience. What’s the more, HUAWEI E3276 supports 3G and 2G simultaneously, with 3G and 2G backward, the modem could auto switch to the lower network. The UMTS network can achieve up to 84 Mbps download speed due to DC-HSPA+ technology.

 

   

 

Just like HUAWEI E398 and E392, HUAWEI E3276 also has many variants models, such as HUAWEI E3276s-150, HUAWEI E3276s-151, HUAWEI E3276s-152, HUAWEI E3276s-210, HUAWEI E3276s-500, HUAWEI E3276s-601 and HUAWEI E3276s-920 etc…They support different frequency bands to meet the requirement of various operators in many countries or areas. HUAWEI E3276s-151 should be the most popular model, because it supports the popular 4G LTE Spectrums all over the world: 800/900/1800/2100/2600 MHz. And it has been presented to the public by the provider Megafon (Model Number: M150-1) and Vodafone( Modem Nuber: Connect Pen K5007)

 

Below are the details specifications for HUAWEI E3276s-151:  

* 4G LTE FDD 2600,2100,1800,900,800 MHZ

* supports LTE Downlink 150 Mbps

* 3G HSPA + / HSPA / UMTS 2100, 1900 AWS, 900 MHz

* 2G GSM, GPRS, Edge 850, 900, 1800, 1900 MHz

* Built-in antenna

* Uplink 50 Mbit/second (4G)

* Downlink 150 Mbit/second (4G)

* Output for external antenna - 1st For signal reception and 1st for increased bandwidth

* Slot for micro SD cards up to 32GB size (optional)

* Slot for SIM card

* Supports Windows 7 Sp1, SP2, XP SP2, SP3, VISTA SP1, SP2, and MAC OS X 10.5,10,6

* Quick start guide included

* Compatible with all PCs, both desktop and laptop    

 

Here now, we can’t get the full information about other variants models of HUAWEI E3276 LTE Cat4 USB modem. But we will keep updated about them.

27/02/2013

ZTE MF880 and MF820T 4G LTE TDD USB Modem

As one of the most important 4G vendors, ZTE has released many 4G LTE modems. ZTE MF820T and MF880 are two of the popular TDD models.  

 

Just like other 4G LTE modems from ZTE, ZTE MF880 and MF820T followed the same design as ZTE MF820 4G LTE FDD Surf stick. The modem body is a little bit larger than usual 3G USB stick. And taking them in hand, users can feel the weight is more than 3G modems.

 

   

 

What is a pity that both ZTE MF820T and MF880 don't have the connectors for external antenna. Perhaps at the big inning when engineer designed the mode, they didn't take this factor into their blueprint. As we can see, in the serials of ZTE MF820D, MF821, MF821D, MF820S2, MF820T, MF880, they all incorporates no antenna ports. As the key features of MIMO connection, we are afraid it may not be as good as the modems with MIMO antenna for data transmission.

    

 

ZTE MF820T and MF880 both work for 4G LTE TDD network, perhaps due to for different providers, they support different TDD frequency bands as below:    

 

ZTE MF820T 4G LTE TDD Single Mode USB Modem:

* Single mode LTE TDD 2300/2600MHz  

 

ZTE MF880 4G FDD TDD USB Modem:

* FDD 800/2600MHz

* TDD 2300/2600MHz

* DC-HSPA+/HSPA+/HSPA/UMTS 2100/900MHz

* EDGE/GPRS/GSM 850/900/1800/1900MHz

   

This should the key difference between ZTE MF820T and MF880. Per current information, ZTE MF880 had need presented to public under provider "3" from UK. And ZTE MF820T should be for China Mobile. What should focus is that ZTE MF880 could also support FDD LTE band 800/2600MHz. It means MF880 could switch between FDD and TDD networks, so ZTE MF880 is somewhat like a enhanced ZTE MF820T.      

 

Regarding the data transmission speed, they both support download speed at 68Mbps and upload at 17Mbps under TDD –LTE network. ZTE MF880 seems more powerful because when working at FDD network, the peak speed could reach to 100Mbps for downlink while uplink could reach 50Mbps.  

 

In conclusion, ZTE MF880 seems more powerful than ZTE MF820T, so if you want to want buy ZTE 4G LTE TDD USB Modems, welcome to www.4gltemall.com    

21/02/2013

Which 4G Modem is Good for TDD network?

More and more 4G networks are launched to commercial as time being, many users want to have their own mobile gadgets to experience faster surfing speed. However, there are so many 4G modems on the market now, which one is better? It's a good question. First, we should know some knowledge about 4G Network. LTE and WiMAX are two most popular 4G Network. Since LTE dominates the 4G trend. Today, we would introduce 4G modem for LTE network.  

 

As the most popular 4G network, LTE uses TDD and FDD technologies to transmit the data. Subsequently, there are 4G TDD modemand 4G FDD modem. They both have special advantages and weakness. This is not our topic today. Today we talk about the 4G modem for TDD network, i.e. 4G TDD Modems.  

 

TDD Frequencies Band & Spectrum

LTE BAND NUMBER    ALLOCATION (MHz)      Wideth of band(MHz)

33                                 1900 - 1920                              20

34                                 2010 - 2025                              15

35                                 1850 - 1910                              60

36                                 1930 - 1990                              60

37                                 1910 - 1930                              20

38                                  2570 - 2620                             50

39                                 1880 - 1920                             40

40                                 2300 - 2400                             100

41                                 2496 - 2690                             194

42                                 3400 - 3600                             200

43                                 3600 - 3800                              200

 

Below are the top TDD Modems that are good for 4G TDD networks:  

 

4G modems for band 38(2600MHz):

  1. Asiatelco ALT-C180 .
  2. Asiatelco ALT-C186
  3. Asiatelco ALT-C187
  4. Huawei E392-92
  5. ZTE MF820S2
  6. ZTE MF820T
  7. ZTE MF880
  8. HUAWEI E392u-21

 

4G modems for band 40(2300MHz): 

  1. Asiatelco ALT-C160,
  2. Huawei E392-92,
  3. ZTE MF820S2 .
  4. ZTE MF880
  5. ZTE MF820T

 So if you are hesitate on which TDD Modem to choose/buy, hope above information would help you make the decision. But since the TDD modems for rest bands are very few, we will make a summary next time about 4G LTE dongles.