Hardware

Garmin Comparison Chart

HanaDaddy 3 Comments

I am recently checking on the GPS and I have never bought one before, so while I checking out the websites, I found this Garmin GPS Comparison Chart from www.garmin-250.com.

gpscomparison

Basically it shows all the models from Garmin with current Amazon prices , so it is very convenient for me to compare. I prefer the models that has Speech to Text feature. Text to Speech feature is a important since it would be difficult to know exactly where I am during driving a car. But I wonder how good their speech quality is. Maybe I should check out Youtube .

I am not sure if I buy Garmin brand, but it is the most popular ones. I wonder how those other non popular brand GPS (Sony or Navigon) are in terms of quality over prices.

Latest Models (Nov 2009)

Amazon prices reflect Early November 2009 prices and maybe different at the time of your reading.

Amazon
(Merchant) Price		 Display size (inches) Text to Speech Speed Limit Display Lane Assist Junction View Bluetooth Traffic compatible
nuvi 1200 $157 3.5 check check
nuvi 1250 $160 3.5 check check check
nuvi 1260T $208 3.5 check check check check
nuvi 1300 $174 4.3 check check
nuvi 1350 $234 4.3 check check check check
nuvi 1370T $372 4.3 check check check check check
nuvi 1390T $286 4.3 check check check check check check

Updated
Eventually I bought Garmin nuvi 1200 but Garmin nuvi 1250 is a better deal with speed limit display function but they are almost the same price. Bluetooth capability is useful if you want to connect your wireless phone and use GPS as hands free device.

Garmin 250 Comparison chart.

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Tuning DD-WRT to use with Linksys WRT54G2

HanaDaddy 8 Comments

As I explained in my previous blog , the default settings came with DD-WRT v24 micro version seemed unstable for the wireless connection. At first I tried to revert to the original Linksys firmware, but after I found out there was no way to go back, I tried various settings to test.

Now I believe that I have a fairly stable connection that I never experienced connection drop after I tuned the settings. I would like to share my settings with you so you can enjoy the DD-WRT.

The basic purpose of my tuning was to have a stable connection, not to have fancy functions. So I tried to disable all the functions that I found not necessary.

1. Rebooting the router daily automatically using Schedule Reboot.

Somewhere on the DD-WRT site that someone is using this feature to reboot the router daily. I am not sure if this really helps to stabilize the overall router operation, but I think this could be a good way of maintaining fresh router state everyday resetting critical system resources such as memory.

2. Wireless Basic Settings

Basic Wireless Setting

  • Wireless Mode should always be ‘AP’
  • Wireless Network:If you use G only , select ‘G-Only’.
  • Wireless Channel:You should select the one that used the least throughout the nearby routers within your area.
  • Wireless SSID Broadcast:There is no reason to enable this. You don’t want others to see your SSID anyway.
  • Sensitivity Range (ACK Timing) : The default value was 2000, but changed to 200. According to a forum entry, someone suggested to use the double value of the distance between your router and client. But I didn’t find any actual improvement on the wireless signal or connection status.

3. Wireless Security: Using WEP instead of WPA.

It appears that I would have unstable connection or slower speed with WPA. Perhaps, the problem is with my wireless client , but with WEP, everything was OK. So I decided to live with WEP and disabling SSID broadcasting. But beware if you are serious about the security, you should not use WEP at all.

4. Wireless Advanced Settings
Okay, now I will go over with the detail settings. This was the most important place to obtain the stable wireless connection.

  • CTS Protection Mode: This is something that is good when to use b and g togather. If you use g only, change this to Disable.
  • Frame Burst should be Disable
  • TX Power: Now this is one of the popular topic in the DD-WRT forum. This is related to transmission power and if you set this value too high, then the router may get burnt or won’t last its intended life span. The recommended max value is 70 which is the default. But please note that many users have said that increasing TX power does not boost the wireless signal that much. In fact, I did not see much difference either. So I decided to use the default.
  • Wireless Multimedia Support Settings: This is something to do with QoS of multi-media. I’ve lived a great life with my previous router which didn’t have such functions so I decided to turn off the option. It was enabled by default.

So, now I am very satisfied and having a good time surfing Internet without the connection dropping. I think the important options for the stable connection were “Disabling CTS Protection Mode and WMM Support” in Wireless Advanced Settings menu. So if you experience the same problem, you should consider to change these options first.

Enjoy DD-WRT!

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