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Need a signal strength meter

With the iPad I find I am using my network in parts of the house I have never before required wireless access to be available. To help map out the boundaries of my network and to identify dead spots I would like to find an application that gave a real time live indication of signal strength.

Does anyone know of such an application?

iPad, iPhone OS 3.1.3

Posted on Apr 9, 2010 1:21 PM

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24 replies

Apr 9, 2010 1:50 PM in response to Jeff Blundell1

Meter does not need to be calibrated back to any standard. A reading of between 0% and 100% would do fine just to see how (relatively) strong the signal is at any location. Experience will then show what the threshold of acceptable performance is for the devices in use.

It will even give a broad hint as to the relative sensitivity of different devices. If device A needs a reading of at least 45% to perform well and device B is happy with reading of 30% then it would probably be safe to say the B seems to be somewhat more sensitive than a.

Apr 9, 2010 2:02 PM in response to Jeff Blundell1

Apple has actually banned these types of apps for inexplicable reasons (maybe they knew about upcoming wifi problems with the iPad and didn't want people noticing). I have a very nice app on my iTouch called "WiFiTrak" that will show you all of the networks that are in range, the signal strength, the security being used, etc. It is no longer available in iTunes.

The best thing I can think of to suggest is the app called speedtest.net (or just go to a web based speed test and just see what bandwidth you get.

Apr 9, 2010 5:08 PM in response to Jeff Blundell1

I found a partial answer. It is not perfect, but at least it shows how well the device signal gets back to the network.

If you have an Apple Airport (I have and Extreme and an Express) then run Airport Utility and go to Advanced - Logging & Statistics - Logs and Statistics - Wireless Clients

If you run this on a laptop then you can walk around your network area and get an almost real time report of how well your laptop signal is being received by the base station. If you have an extended wireless network then you can watch as the laptop gets transferred between the base stations and see the relative signal strengths to each base.

Apr 9, 2010 7:29 PM in response to Jeff Blundell1

I have a question about this information. The AirPort Utility always reports a rate of 39 Mbps for my iPad. Even if the iPad is only two feet away from the base station. I expected to see 300 Mbps on the 5GHz band and 130 Mbps for the 2.4GHz band. That's what my MacBook Pro gets.

Can anyone explain why this is? Maybe a power-saving feature? Or is there something wrong with the iPad?

Apr 10, 2010 6:24 AM in response to Fred Tedsen2

folks, you need to understand how 802.11n works. the ipad has a low power 802.11n adapter. it can only use up to mcs rate 7 instead of 15 like your laptops/desktops. this means you will never see more than 150Mbps connection and that would only be if connected to the 5Ghz radio of your access point.

if you see a max of 270 on any device it sounds like your access point doesn't support short guard interval. your ipod connects at 54Mbps because it's only a b/g device. and if your ipad connects at 39Mbps it appears to be using mcs rate 4 and a 20Mhz wide channel. so it sounds like it's connecting to 2.4Ghz radio.

dual band radios depend on the software driver to determine how they will connect to an access point and what band they will prefer if both 2.4 and 5Ghz is available. perhaps the ipad's driver chooses 2.4 first and then 5Ghz only if 2.4 isn't available? if you can disable the 2.4 radio altogether and test the ipad. problem will then be that your ipod won't connect. this is where the newer access points can help if they can run both radios and use separate ssid's for each. that is a way to force your clients to use one radio versus the other.

http://www.ciscostadium.org/en/US/solutions/collateral/ns340/ns394/ns348/ns767/i mages/whitepaper_80211n_design_and_deploymentguidelines-1.jpg

Need a signal strength meter

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