I was setting up a new AP and running speedtests with Chanalyzer and noticed that there were signals on other channels when testing, which were much stronger when closer to the AP. I then wondered what it looks like on the AP and saw the following when working with this AP, in this case a Netgear 1200AC (R6220) and then compared the same test with UniFi AC-Pro
Images and comparison at imgur, I tried to post them here more directly but only 1 image was allowed and I couldn’t combine them into one large image easily: https://imgur.com/a/ZKBq9Zb
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Netgear 1200AC (R6220) -Wi-Spy Resting On AP during speedtest
Netgear 1200AC (R6220) - Wi-Spy Couple Feet Away
UniFi AC-PRO Wi-Spy On AP During Speedtest
UniFi AC-PRO Wi-Spy Couple Feet Away During Speedtest
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The speedtest was done on mobile phone connected by 5Ghz on channel 36 with both APs.
My question then, is this normal to see all of that extra activity across the spectrum when measuring very close to the AP or do I have malfunctioning APs perhaps? It troubles me a bit that it’s making signal all across the DFS channels but since it’s so low power it probably does no harm I would guess.
Perhaps I’m just not understanding RF and maybe when very close to the transmitter it can seem to flood the spectrum, is that normal? Anyone with more experience I’d certainly appreciate your thoughts. Thanks!