Advantages and disadvantages sierra 881U HSDPA 3G Modem

In this article I will discuss about Sierra 881U modem device, what are the advantages and disadvantages. Hopefully this article can be a reference for those of you who want to buy the 3G modem.
In the past when I bought this modem price is still about 1 million, but now it seems the price drops to around 900-800 thousand.
Sierra 881U modem uses a USB interface that can plug in your PC or laptop.
For a USB modem, sierra 881U includes large. This is understandable because the modem does not have the facilities that exist in other 3G modem, which is the facility of GPS (Global Positioning System).
With GPS you can find the location you are currently on the map and determine where you want to go with the help of satellites. This is possible because the modem is embedded a GPS chip.
From my experience even used this modem stays cool all day, unlike when you use 3G mobile phone as a modem. Your mobile phone will quickly heat and the remaining life becomes shorter.
Here are the advantages and disadvantages of modem sierra 881U
Advantages Sierra 881U modem

   1. support HSUPA 7.2 Mbps (4G)
   2. there is a GPS facility
   3. cold, not heat fast
   4. external antenna can be added to strengthen the signal
Lack of Sierra 881U modem

   1. rather large size
   2. USB plug folding models, are at risk of fracture. use the USB docking solution.
   3. wear extra batteries
   4. do not support Linux operating systems
Sierra 881U modem is 7.2 Mbps HSUPA network supporting downlink and 2Mbps uplink. But by the time I bought before settingit still uses HSDPA 3.6 Mbps.
To change to the 7.2 Mbps HSUPA mode, you need to give AT command (AT command) to the modem. Here are step pace.
Switch the mode at 7.2 Mbps HSUPA modem sierra 881U
First you must know the port number of the sierra modem AT commands on your computer (the case could differ diff). Do the following:

   1. Right click on My Computer icon and select Properties
   2. Click the Hardware tab
   3. click the Device Manager button
   4. click the Ports (COM & LPT)
   5. look for the Sierra Wireless AT Command Port (UMTS)
   6. note how the COM is, for example COM15, COM18, etc.
After that do the AT command (AT command) to your modem sierra, the following steps steps:

   1. run the HyperTerminal program in Windows by clicking Start> Accessories> Communications> HyperTerminal.
   2. on the Connection Description dialog, fill in name (any) and click OK
   3. the Connect To dialog, see the Connect using, select the port number that you noted earlier, click OK
   4. typing AT! HSDCAT = 8 and press enter, it would appear the message OK
   5. typing AT! HSUCAT = 5 and press enter, it would appear the message OK
   6. restart modem
   7. done, now your modem speed 7.2 Mbps
Activating the GPS feature on the modem sierra 881U

   1. download the firmware for the modem sierra here
   2. SIM card from the modem off
   3. update the firmware by running the setup to complete. firmware updates must not fail because the lights off for example, because it could be fatal for the modem hardware. so make sure you do not power off (use a UPS or a laptop)
   4. 3G Watcher software download a new one here
   5. 3G Watcher software update MP by running the setup to finish
   6. Your modem ready for GPS via air
To open the GPS menu, launch the 3G Watcher software MP then click the Tools menu> Display of GPS. Like this it looks.
Sierra HSDPA 8811u
Sierra 8811u
Just remember to GPS's with Sierra 881U modem is in no way need not use SIM cards, aka pulses, that you need is a signal from the satellite up there.
To display the map you can use additional software such as the Garmin software is already equipped with a map of Indonesia of course.
from: kadekbagus.com