Hi David et al., I’ve actually done this with Ekahau and on the 5GHz radio with the same EIRP value, the 315 is typically 2dB stronger than the 515. Based on real world data, I’ve seen somewhere around a 2-4 dB difference on both the SideKick and my MBP when using Adrian’s WFE app.
The 515 has close to 1 dB more antenna gain than the 315 does on the 5GHz radio which means there’s going to be less conducted power (TX power) out of the transmitter when using the same EIRP value. I also wonder if the 315 using a Qualcomm chip vs the 515 using Broadcom has anything to do with it and how much. Regards, Keith From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> on behalf of Biron, David <d.bi...@ucl.ac.uk> Date: Tuesday, February 9, 2021 at 9:42 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: Re: [WIRELESS-LAN] Aruba AP2xx vs. AP5xx apples-to-apples Hi Jason, In regards to Ekahau, you can model the AP model before and after in the predictive section. Obviously this is based on a computer model, but should give an indication. I can’t comment in regards to going from AP2xx/3xx to the AP515. But we have gone from the Cisco 2802i to the AP-515 and in the real world the coverage is a lot better with the Aruba in comparison to the Cisco. Modelling this in Ekahau shows similar. We were a really early adopter of AX and chose to turn off that feature due to the amount of corporate managed laptops running the affected Intel chipset. Now AX is more widespread (Lots more client devices) and better information is provided to end users in regards to updating drivers, we are looking at turning the feature back on. David Biron From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> On Behalf Of Jason Trinklein Sent: 08 February 2021 18:02 To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] Aruba AP2xx vs. AP5xx apples-to-apples In the early days of Aruba's AP5xx series, I heard rumblings in peer institutions and on Educause about the AP5xx series having poor RF properties compared to the AP2xx and AP3xx series. For example, when replacing an AP315 with an AP515, signal coverage was worse, sometimes bad enough to cause service loss in distant locations. We are considering our next wifi upgrade to 802.11ax and are thinking about performing an apples-to-apples wifi survey by surveying our 2xx APs in-place, then performing the same survey with 5xx APs in-place. Has anyone performed such an apples-to-apples comparison with Ekahau, measuring RSSI, throughput, jitter, and latency? Any comparisons of airtime utilization using EyePA or similar? If anyone has experience they can share to help us make a data-driven and informed decision, I'd be appreciative. In a broader question - for those who have moved from .ac to .ax, have you seen measurable increases in quality of service to your community? Thanks! -- Jason Trinklein Information Technology Services - Infrastructure Clark University | 950 Main Street | Worcester, MA 01610 508-421-3865 (o) | 508-736-4001 (c) | jtrinkl...@clarku.edu<mailto:jtrinkl...@clarku.edu> ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.educause.edu%2Fcommunity&data=04%7C01%7C%7Cf4333d3858b3459910d908d8cc5d0eb2%7C1faf88fea9984c5b93c9210a11d9a5c2%7C0%7C0%7C637484047345115594%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=zmwlOHStZofmIbe%2BGLiCBXr7hg1MG4S%2BJF9keEgZ%2Bpo%3D&reserved=0> ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community
