Wednesday, August 20, 2008

My GPS

I got one. Nuvi 200 from Garmin

The Garmin Nuvi 200 GPS offers first time buyers and budget consumers a great mix of quality and cost affordability.

The Garmin Nuvi 200 is the most desirable entry level GPS unit that you can get for the best of price. See for yourself how much power a simple GPS navigator can bring to its user, information is a valuable resource and can ultimately save you countless time and money.

This gadget here is able to do all the navigation you need, with preloaded maps it’s ready to use straight out of the box. It’s a small device, but functions very well to get the user moving in the right direction. Even though it’s an entry level unit, it does have some functions similar to the higher end models available from Garmin. This is a most impressive unit and you’ll see why this is a popular product on the GPS market.

GPS

The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to use GPS.

How it works

GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. GPS receivers take this information and use triangulation to calculate the user's exact location. Essentially, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is. Now, with distance measurements from a few more satellites, the receiver can determine the user's position and display it on the unit's electronic map.

A GPS receiver must be locked on to the signal of at least three satellites to calculate a 2D position (latitude and longitude) and track movement. With four or more satellites in view, the receiver can determine the user's 3D position (latitude, longitude and altitude). Once the user's position has been determined, the GPS unit can calculate other information, such as speed, bearing, track, trip distance, distance to destination, sunrise and sunset time and more.

How accurate is GPS?

Today's GPS receivers are extremely accurate, thanks to their parallel multi-channel design. Garmin's 12 parallel channel receivers are quick to lock onto satellites when first turned on and they maintain strong locks, even in dense foliage or urban settings with tall buildings. Certain atmospheric factors and other sources of error can affect the accuracy of GPS receivers. Garmin® GPS receivers are accurate to within 15 meters on average.

Newer Garmin GPS receivers with WAAS (Wide Area Augmentation System) capability can improve accuracy to less than three meters on average. No additional equipment or fees are required to take advantage of WAAS. Users can also get better accuracy with Differential GPS (DGPS), which corrects GPS signals to within an average of three to five meters.

http://www8.garmin.com/aboutGPS/

Monday, August 18, 2008

My Broadband is restored

Less then 24 hours, my broadband is up. For me is ok. Coz it's for my personal use or access. But if this restoration time is for business, is it ok ?

My Broadband Having Problem



My daughter complaint to me that she can't surf the internet. Well, after checking I found out that my router is ok. My ADSL modem also ok. But the ADSL status has no light. I called streamyx then one lady picked my call.

I told her my ADSL connection status which is no light at ADSL. She ask me to do this and that without checking my connection at their side. Ok it's find for me. Maybe she is good. But then she ask me can I ping the serial address. I said how, because mine is using PPoE. How could I get the serial address from the ISP due to no ADSL link.

She said she understand my problem, understand that bla bla bla... Then at this time, I told her, forget it. You (she) know nothing and not helping me as a customer.

I hang up and about 5 min I call again. Then another guy pick my call. Again tell them same story. This guy checking my connection at their side. He create a docket for me and tell me the restoration window. Ok, I wait.

Why streamyx help desk not customer friendly ?

Thursday, August 14, 2008

My Family





Monday, August 11, 2008

Subnet Calculator

I found a great tools for subnet calculator. It can be access online with download or installed in our PC. And the most important thing is it will explain how the subnet or subnetmask work. Try this link http://www.subnetmask.info/

Sunday, August 10, 2008

FTP Tools

There are a lot of free tools available in internet such as FTP tools. For me 3CDaemon from 3Com is good enough for my use. The tools come with TFTP client, TFTP Server, Syslog server and and also FTP server.

So, what is this 3CDaemon thing?

  • New interface. Lot more extensible, so that I can add sub-programs more easily.
  • TFTP Server:
    • Support for RFC 1782, 1783 and 1784. Block size, timeout and transfer-size negotiation.
    • Faster. See speed comparison chart below.
    • Prints IP address(es) on which it is listening.
  • FTP Server:
    • Supports PASSIVE transfer.
    • Supports Netscape/IE4 browsing
    • Supports 32 char passwords.
    • Passwords are MD5 hashed. This should provide adequate password security, yet at the same time still be exportable.
    • Prints IP address(es) on which it is listening.
  • Syslog Server:
    • Added Syslog functionality.
    • Logs all syslog messages received.
    • Allows filtering/restriction of syslog messages by IP Address.
    • Allows logging into via message priority, message facility or IP address.
    • Allows viewing of the log files while active, plus copy to clipboard or print
    • Produces standard ASCII text files, suitable for including in emails or faxing.
    • Prints IP address(es) on which it is listening.
  • TFTP Client:
    • Support for RFC 1782, 1783 and 1784. Block size, timeout and transfer-size negotiation.
    • Stores addresses of frequently accessed hosts
    • Supports multiple file transfer, or directory transfer
The software can be downloaded here

Setting My Wireless

Here how I set my wireless using my router. First what I need is, SSID name and WEP key. I've decided to use my own SSId instead default SSID provided by the router. Why ?. Because it's easy for me to know weather I'm connected to my wireless network or else. Remember, now days most home have their own wireless installed. After log click the wireless tab.

The following menu will appear. I put my name as my SSID and I select channel 2. Again most router by default, is using channel 1.

Then click Wireless security. Since I've select channel 2, I have to key in my WEP Key at column number 2 with my own security.

After all done, click Save Settings. That's it. Now wireless is ready.

Monday, August 4, 2008

Setting my Linksys WRT54GL

Here how I set my router. What I need to know is, my login-id, my DNS and also my connection type, is it PPoE or Static IP or else.

First I have connect the router to my PC/notebook. Let the router assign my PC with IP Address (DHCP). By default it will assign my PC with IP 192.168.1.2 and my router 192.168.1.1. I have to double check my IP by type ipconfig. After success I have to login to my router by type in the gateway IP in my browser (mozilla, IE or other simillar browser). It will prompt with login prompt like this

By default, there is no user name. Just enter the password and click ok. For new box the password is admin.

Then this screen will appear.

Fill in all info necessary. If you do not want to use ip 192.168.1.x as your ip, just change at router IP. Select the appropriate subnet. Or else, do not change.




To enable the DHCP assignment to your PC, select the DHCP server setting. Select starting IP and remember to fill all the DNS IP. In this case I use TMNet DNS as my DNS.

Basically, my LAN or home networking is done. Any PC can connected to my router. For wireless, I'll show in next post