I just need to see the signal strength of WiFi stations I have around my house. It would be better to have it (signal strength) in a percentage format, because there some apps that show strength in some other difficult format.
Tools for measuring wireless strength in iPod Touch
applicationsipod-touchwifi
Related Solutions
Have you already turned off the iPod (by pressing the topmost button for several seconds)? The iPod asks you if you really want to turn off. Wait until ist is off, then switch it back on and see what happens with the status symbol.
If you're just looking for a quick signal strength number, option-click on the AirPort icon in the menu bar. Under the connected network you will see several pieces of information:
RSSI is your signal strengh in dB. Higher (closer to 0) is better.
If you're looking for noise or the signal strength for multiple access points, I suggest checking out iStumbler:
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Best Answer
If you are talking dBm, which you will see most wifi scanning apps use, it is actually not that difficult to understand. Basically higher numbers are better, and even negative numbers actually represent positive quantities, just smaller ones.
From the wikipedia entry on dBm:
Zero dBm equals one milliwatt. A 3 dB increase represents roughly doubling the power, which means that 3 dBm equals roughly 2 mW. For a 3 dB decrease, the power is reduced by about one half, making −3 dBm equal to about 0.5 milliwatt.
There is also a pretty dang useful chart.
Sorry for not answering the original question, but I think with this knowledge you will be able to powerfully determine the strongest source of transmissions.