https://community.ruckuswireless.com/t5/Wireless-Questions-and-Best/Spectral-Analysis-Can-you-explain-this/m-p/41414#M2062 Hi Dan, it''s clearly some kind of narrowband interference, though exactly what is difficult to tell from this image. <BR /><BR /> What's located near the access point ? Wed, 04 Feb 2015 08:12:11 GMT neil_neil_67001 2015-02-04T08:12:11Z https://community.ruckuswireless.com/t5/Wireless-Questions-and-Best/Spectral-Analysis-Can-you-explain-this/m-p/41413#M2061 Take a look at this spectral analysis from one of our access points. We were having loads of issues connecting to the access point on Ch11. I have changed the AP to Ch6 to see if this fixes the issue. <BR /><BR /> If you have ideas what might be causing the graph to look like this any help would be appreciated. <span class="lia-inline-image-display-wrapper" image-alt="Image_ images_messages_5f91c3e9135b77e2478dcd85_d110e6c90ae000ad773b46a959165218_darringtonEYFS_inline-81fe4dfb-c036-49bc-ae29-23c925915c66-2112678748.jpg1423037008"><img src="https://community.ruckuswireless.com/t5/image/serverpage/image-id/953i7D50F21CD4CD188B/image-size/large?v=v2&amp;px=999" role="button" title="Image_ images_messages_5f91c3e9135b77e2478dcd85_d110e6c90ae000ad773b46a959165218_darringtonEYFS_inline-81fe4dfb-c036-49bc-ae29-23c925915c66-2112678748.jpg1423037008" alt="Image_ images_messages_5f91c3e9135b77e2478dcd85_d110e6c90ae000ad773b46a959165218_darringtonEYFS_inline-81fe4dfb-c036-49bc-ae29-23c925915c66-2112678748.jpg1423037008" /></span> Wed, 04 Feb 2015 08:04:04 GMT https://community.ruckuswireless.com/t5/Wireless-Questions-and-Best/Spectral-Analysis-Can-you-explain-this/m-p/41413#M2061 dan_rhodes 2015-02-04T08:04:04Z https://community.ruckuswireless.com/t5/Wireless-Questions-and-Best/Spectral-Analysis-Can-you-explain-this/m-p/41414#M2062 Hi Dan, it''s clearly some kind of narrowband interference, though exactly what is difficult to tell from this image. <BR /><BR /> What's located near the access point ? Wed, 04 Feb 2015 08:12:11 GMT https://community.ruckuswireless.com/t5/Wireless-Questions-and-Best/Spectral-Analysis-Can-you-explain-this/m-p/41414#M2062 neil_neil_67001 2015-02-04T08:12:11Z https://community.ruckuswireless.com/t5/Wireless-Questions-and-Best/Spectral-Analysis-Can-you-explain-this/m-p/41415#M2063 Looks like a continuous transmitter. <BR /> Got any motion detectors? Buildings' alarm system? <BR /><BR /> Br. <BR /> Koen Wed, 04 Feb 2015 08:13:32 GMT https://community.ruckuswireless.com/t5/Wireless-Questions-and-Best/Spectral-Analysis-Can-you-explain-this/m-p/41415#M2063 koen_verbeeck 2015-02-04T08:13:32Z