Satellite-Based Communication

What is space-based communications? You encounter several dishes in citizens’ front yards and on quarters. Every single one aiming for the equivalent neighborhood in the cosmos.

But what’s the mystery and what is coming to pass? They will appear to stare into oblivion.

In truth, they are honing in on a communications device rounding the globe. While non-ground-based can be used paltry zone, a lone satellite can transmit information to many more square miles. The frail message of wireless internet is no match weighed against the strong transmission from the piece of hardware in Terra Firma’s trajectory.

A communications device plate system uses a modem to switch signals backwards and forwards. The designation modem is a condensed variety of the word modulator – demodulator. What happens is that an analogue signal is sent out from another area such as another workstation. Your modem adjusts carrier electronic signals into digital electronic signals. The 1s and 0s of workstation data is changed into audio, sent out along a cable, and then picked up by another modem that demodulates or amends the analogue signal back into the 1s and 0s that the workstation can translate. system, the modem modifies digital data into a form that can be sent out through the sky to the modem waiting to convertthe analogue signals back into the digital messages needed by the workstation on the orbiting device. Just invert the course of action and that’s the manner of how the data comes again to your workstation.

Satellite internet involves a dish, a location of open atmosphere facing the direction of the satellite you are accessingas well as the where the information get bigger. As the satellite signal goes out, it isn’t a slim line resembling a laser. The more remote it gets the thicker it is. As it closes in on its end, it contracts back down again until it gets to the receiver. This also makes Satellite internet more vulnerable to disruption. Raindrops, for example, could scatter a electronic signal.

Right now satellite communications alternatives are improving, but it is still a long way from being as quick as the terrestrial versions.

http://www.richiebush.com/satellite-based-communication/

VSAT Installation Glance

this paper just to remind me of some freq comand and let me not forget, because I was forgetful,

VSAT stands for Very Small Aperture Terminal is a station of the satellite signal receiver with a dish-shaped antenna receiver with a diameter less than three meters. The main function of the VSAT is to receive and send data to a satellite. Serves as the successor satellite signals to be sent to another point on the earth. VSAT dish is actually facing a geostationary satellite. Geostationary satellite that the satellite is always in the same place in line with the earth's rotation on its axis. Geostationary satellite orbit is always at the same point on the surface of the earth, then he will always be up there and follow the earth's rotation on its axis. http://id.wikipedia.org/wiki/VSAT

Actually I think installation of VSAT installation same as normal parobala tv, but have different functions, essentially almost the same, the similarity
1. Having Disk (Reflector)
2. Having LNB (LOW NOISE BLOCK)
3. Cable channel data

Difference
1. The main function of different dishes in one direction only, only as a receiver
VSAT can receive or send data
2. From the obvious function of indicating a difference that is the main tool
VSAT has a transmitter section of the modem control and the strengthened
emit satellite using BUC (Block Up-Converter)

Installation of VSAT is not so difficult, we understand the reply about the frequency and the installation of satellite dish television broadcast receiver, which differentiates us must understand that the modem is used.

Modem is in use for many types of VSAT communications and brand, which I never use them and install their own modem from Viasat LinkStar s2, Modem Nersatlink 1900 from Nera,
Of the two modems are indeed many differences, especially different in the way administrasiannya lawyer and existing facilities in both the modem, the same hell as kesamaanya for rx and tx of the satellite,
Each modem from different providers are usually different, because it is concerned with the data receiver at their NOC.

WEH writing yach tired too,
when when I terusin least, there is no experience similar to the experience of yuk

Driver Modem Nokia CDMA

Here I provide the download link for Nokia CDMA modem driver second part, for the first part can be found here. Modem driver for Nokia CDMA phones Other soon followed.

Driver modem Nokia 6235 CDMA

Driver modem Nokia 6255 CDMA

Driver modem Nokia 3125 CDMA

Driver modem Nokia 6016i CDMA

Driver modem Nokia 6015 CDMA

Driver modem Nokia 3585 CDMA

Download Nokia PC Suite 6.85.

Download Nokia Connectivity Cable Driver 6.85.

SonyEricsson Z550i utilize as a Modem

After a few days ago dapet pinjeman SonyEricsson Z550i mobile phone from temen and I try to use it as a modem, now I try to create a simple review of this SE phone. As before, the phone SE K750i and SE Z520i, I still use the help of Sony Ericsson PC Suite 2:10:46 and GSM card Telkomsel Flash Unlimited package.



As for the operating system I use is Windows XP SP2 on a Toshiba laptop (Pentium M). Other equipment I use is the data cable DCU-60 original.



As usual, the first step taken is to setup a connection to the SE PC Suite (the steps are the same for SE phones and can be applied to other SE phones). After the phone is detected by the SE PC Suite, we went to Mobile Networking Wizard, followed by making a new connection by choosing File>> New Connection.

Select Packet Switched Data to use existing GPRS connection on your mobile phone (SE Z550i phone support 3G yet). Then select Modem SE Z550i which has been detected as a modem (Sony Ericsson Device 125 USB WMC Modem), give the name of the connection in accordance with our wishes.

Next we went on stage charging connection parameters, as before, I chose Manual selection mode on the provider. APN (Access Point Name) I am content with the Internet (I use the card package of Telkomsel Flash Unlimited), then for my username and password blank. For other card insert appropriate parameters of its GSM cards.

When finished, now try to connect with the Connect icon in the Mobile Networking Wizard. After the connection is connected, the system tray will provide a connection notification.

To test the connection, I tried using Speedtest.net. From the test results, with SE Z550i mobile phone as a modem, I get download speeds of 0.04 Mbps (about 40 Kbps) and upload speeds of 0.02 Mbps (about 20Kbps).

Thus a brief info about using your phone as a modem SE Z550i, may be useful.



http://ariawijaya.com/2009/06/19/memanfaatkan-sonyericsson-z550i-sebagai-modem/.

Sell Modem, Free Internet 6 Month

TELKOMSEL
VP Channel Management Telkomsel Gideon Edie Purnomo (left) accompanied by GM Device Management Heru Sukendro as Telkomsel Flash to enjoy the service using the latest Huawei USB Modem

.

.JAKARTA, KOMPAS.com - In the era of high-speed broadband Internet afdhol if it does not taste the modem is not HSPA (high speed packet access). Two new models introduced HSPA Huawei, each E-1750 and E-1550, to meet those needs. The availability of these two modems dibundling with mobile broadband services Telkomsel Flash. For each purchase with a bonus free internet quota of 300 MB per month for 6 months.

E-1750 modem capable of download speeds up to 7.2 Mbps and 5.76 Mbps upload reached. Package is sold for Rp 900,000. This modem is integrated with PC-Voice, which allows for the phone while surf. Meanwhile, the USB modem Huawei E-1550 for USD 700,000 with the ability to download speeds of up to 3.6 Mbps.

"This is a bundling package synergy with the sophistication of quality service, low-cost Huawei modem. Modem is the perfect blend of simple design which is in current fashion and sophistication of functionality to support business and personal purposes," the Deputy President of Huawei James Zhao.

Meanwhile, VP Channel Management Telkomsel Gideon Edie Purnomo said customer benefit and convenience in using mobile broadband services is mainly in terms of speed more so thanks to the support of 3G networks are the latest technology available to more than 150 cities, spread from Sumatra to eastern Indonesia and served the High Performance Network is supported by 29,000 BTS.

"This is one manifestation of our appreciation for the high public trust in mobile broadband services Telkomsel Flash, where users Telkomsel Flash now reached 1 million or an increase of 400 percent compared to the number at the end of 2008 that only 200,000 subscribers," said

Telkomsel is now believed to serve 78 million subscribers, which in 2010 estimated the number of mobile cellular subscribers in Indonesia through the number 150 million and 35 million Internet users. Mobile phones and the internet will be converging, in which the presence of mobile wireless broadband Internet solutions manjadi Internet users who have high levels of mobility in their everyday activities. Potential mobile broadband users will reach 5 million by the end of 2010..

http://tekno.kompas.com/read/xml/2009/08/28/20471499/beli.modem.gratis.internet.6.bulan

Smart Presents New Variants Hape Modem

JAKARTA - In order to boost customer data, Smart was returned to present two hape new modem with a cheap price, only Rp399.000.

This latest hape modem comes from a different variant, Haier ZTE C700 and C261. Both carry the CDMA 1X technology with a maximum speed of 153 Kbps from the latest Qualcomm chipsets, QSC1110..

Launch Smart hape new modem .

Advantages offered by the two hape modem is the MP3 player facility, BREW applications and MicroSD memory slot.

"In addition, hape is also equipped with WAP and Opera Mini applications so that customers can browse, chat or check e-mails directly from HP," said Div Head Core Product and Branding Hermanto Ruby Smart Telecom, through its official statement on Tuesday (1 / 9 / 2009).

Customers who bought this hape new credit package will get 10 thousand in force for 30 days (not accumulation) and also Free unlimited internet for 3 months. Both these bonuses can be used during the active period. Promo is valid until November 30, 2009. (srn).

http://techno.okezone.com/read/2009/09/01/54/253451/smart-hadirkan-varian-baru-hape-modem.

LAN port problem on the Speedy Modem Aztech

This past week I was having trouble accessing the internet at home. For some reason access to the internet very slow, especially for domains outside the country. My wife complains about the lunkhead access Facebook while I waited until the hiccups susestudio access to. I had to do tunelling to my hosting server with a slightly increased speed.

At first I thought this was the impact of the storm Morakot problem in Taiwan, he added there are some Denial of Service attacks against several major online service providers such as Facebook and Twitter.

Since some time the problem is still not finished, I started doing debugging because my assumption might be wrong. I began by trying to access a share to Speedy without another computer. Still remains slow. The strange, even a ping to the modem itself several times RTO (Request Time Out).

My suspicions turned to a cable connection. I change the phone network cable but no change. I also replaced the cable UTP connections with others but no change. I even did Crimping cable 2-3 times and make sure the cable is not a problem but when installed, ping from the laptop to the modem remains RTO. At the same time, if I connect to the switch / hub, the ping to other computers running without interruption.

Suddenly my suspicions turn to the modem Speedy. I got this modem as early as the first bundle Speedy subscription. This ADSL modem with a series of branded Aztech 650EU. Because I do not have a replacement ADSL modem, I decided to just leave first, then tomorrow going to buy a replacement.

I was idly browsing to Google to find out if there is someone else who experienced this. Browsing this is soooo long it provides an interesting information, namely that there are some colleagues have problems with the LAN port (RJ-45) on Aztech modem they own. To be sure I tried using the USB cable is detected by both the existing openSUSE 10.3 on one computer. openSUSE 10.3 was just so happens that because usually I use version 11.1 or 11.2. Installing openSUSE 10.3 is a relic of Zimbra training last week.

My internet connection test with openSUSE 10.3 + USB cable Aztech 650EU modem access was very smooth. I tried again and again and also try to download large files well turn out victorious. Ngacir facebook, twitter kaboor and susestudio ngibrit (hehehe, running out of adjectives:-P).

Because the condition is now only openSUSE 10.3 computers that could connect to the internet, I do the setup for him to act also as a router so other computers can connect to the internet connection aboard.

I checked this morning, the quality is still good. So if you have friends who use Aztech ADSL Modem 650EU or similar and there is a problem with slow internet access, first test with the supplied USB cable.