To put it in perspective, the transmit powers for iPhone 5 (yanked from: http://blogs.aerohive.com/blog/the-network-revolution/apple-iphone-5-wi-fi-specs)
Frequency bands supported: * 2.4 GHz ISM (Channels 1 - 11), Power Output ~16dBm * 5 GHz UNII-1 (Channels 36 - 48), Power Output ~14dBm * 5 GHz UNII-2 (Channels 52 - 64), Power Output ~13.5dBm * 5 GHz UNII-2Ext. (Channels 100 - 140), Power Output ~12dBm * 5 GHz UNII-3 (Channels 149 - 161), Power Output ~13dBm * 5 GHz ISM (Channel 165), Power Output ~13dBm - See more at: http://blogs.aerohive.com/blog/the-network-revolution/apple-iphone-5-wi-fi-specs#sthash.8jMYDOni.dpuf Ryan H Turner Senior Network Engineer The University of North Carolina at Chapel Hill CB 1150 Chapel Hill, NC 27599 +1 919 445 0113 Office +1 919 274 7926 Mobile From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Dan Brisson Sent: Thursday, December 12, 2013 2:57 PM To: [email protected] Subject: Re: [WIRELESS-LAN] WiFi planning Yikes, didn't think they were weak but it has been a while since I've looked. Based on that, are folks aiming to accommodate that weak of a signal at -65 or close to that? -dan Dan Brisson Network Engineer University of Vermont (Ph) 802.656.8111 [email protected]<mailto:[email protected]> On 12/12/13, 1:54 PM, Turner, Ryan H wrote: Things like iPhones are a lot lower than 25 mW. Closer to 17. Ryan H Turner Senior Network Engineer The University of North Carolina at Chapel Hill CB 1150 Chapel Hill, NC 27599 +1 919 445 0113 Office +1 919 274 7926 Mobile From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Dan Brisson Sent: Thursday, December 12, 2013 1:39 PM To: [email protected]<mailto:[email protected]> Subject: Re: [WIRELESS-LAN] WiFi planning Coming in a little late on this thread, but Tristan brings up an excellent point. We are dealing with multiple areas in our dorms where AirMagnet Survey with the AirMagnet a/b/g/n card had a much better RSSI/SNR than the student with an iPad or iPhone has. What we should have done when surveying was to turn down the TX power to something like 25mW, which would more closely mimic a tablet or smartphone. We are in need of a survey tablet upgrade and currently looking at a Dell XPS with the built-in Intel(r) Dual Band Wireless-AC 7260 since that appears to have direct support within AirMagnet. But I'm considering also purchasing something like a Nexus 5 smartphone and using that along with the tablet to check RSSI. I would prefer to use an iPhone since that's what the majority of students have, but from what I can tell there's still no decent App that will give RSSI values. Curious what folks think of that strategy. Hopefully this is close enough to the main topic to not be considered hijacking. I had been meaning to get an email out on this topic. Thanks, -dan Dan Brisson Network Engineer University of Vermont (Ph) 802.656.8111 [email protected]<mailto:[email protected]> On 12/11/13, 5:38 PM, Tristan Gulyas wrote: Hi all, What device or test equipment is being used for the RSSI value? If we see -65dBm on a Fluke AirCheck, we're lucky to get -72dBm on an Intel 5100 in an HP laptop, as an example. We'd like to pick a specific device, eg, an iPad and create standard measurements on such a device so the customer is empowered to report a fault based on data they have available. Tristan On 12 Dec 2013, at 8:27 am, Barros, Jacob <[email protected]<mailto:[email protected]>> wrote: We are going into dorm rooms over winter break to review ap placement. Do any of you have a policy (written or unwritten) that sets a minimum RSSI for a space? For example, if the RSSI is -65 or lower then you shuffle or add an ap to the area? Jake Barros | Network Administrator | Office of Information Technology Grace College and Seminary | Winona Lake, IN | 574.372.5100 x6178<tel:574.372.5100%20x6178> ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
