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Forum Discussion
FBFeins
Nov 30, 2025Aspirant
Nighthawk AC1900 Smart WiFi Router (R6900P) in AP Mode, Second R6900P
All connections are Ethernet. Buried Ethernet and feeder cable to buildings #2 and #3; Ethernet and utility feeder cabling are ~12" separation as appropriate. Router is Nighthawk X6S, AC3600 (Mo...
FBFeins
Dec 01, 2025Aspirant
I tried speedtest.net yesterday and that's where I got conflicting and inconsistent results, sometimes great other times barely registering. That was my clue I had a problem(s)! Not from a laptop though, from iPhone. I can try a laptop, ... If I can find my scarf and hat!
Building #2 is common wood frame construction. R6900P is in window closest to Building #3 (it belongs in the high-center of 42' X 32' room and will be returned there after problem addressed/solved.) Building #3 is actually a wishing well (not a building per se.) I called it B-3 for clarity. And yes, I can connect from #2 to B-3; I just want better WiFi connections. I have remote cameras 150'-200' further; this was the closest I could trench and get Ethernet and utility feeder.
Do you have any guidance on the channels for #3 (vs #2)? I'm pretty sure that's where my problem is. And FYI, until recently I didn't realize glass really interfered with WiFi transmission. I have an WAC-104 (wired, AP mode) on a (protected) ledge, outside a window. (I buy used and otherwise out-of-date/obsolete hardware. That's how I can afford my 'tweaking'. WAC-104s are old and slow but good enough for my modest needs. THANK YOU for your interest in sharing your knowledge. Thanks again. Fred
Fred B Feins
StephenB
Dec 01, 2025Guru - Experienced User
FBFeins wrote:And FYI, until recently I didn't realize glass really interfered with WiFi transmission.
Low-E glass and privacy-tinted glass can block wifi, due to metallic coatings. Normal window glass won't.
FBFeins wrote:I tried speedtest.net yesterday and that's where I got conflicting and inconsistent results, sometimes great other times barely registering. That was my clue I had a problem(s)! Not from a laptop though, from iPhone.
That test checks the cable+extender wifi. Connecting directly to the cable (with no R6900P) would confirm that the cable you buried is good.
Then connecting up the R6900P, and then connecting the laptop to one of the LAN ports would check the wired performance. If that is inconsistent, then your problem is not WiFi.
FBFeins wrote:Do you have any guidance on the channels for #3 (vs #2)?
If the goal is to connect the remote cameras, then what matters is 2.4 ghz. 200' is a stretch for wifi, and 2.4 ghz carries further than 5 ghz. In that scenario, I'd turn 5 ghz off.
The non-overlapping channels for 2.4 ghz are 1, 6, and 11. So you could set #2 to channel 1 and #3 to channel 11 to get max separation.
I'd try changing the 2.4 ghz mode to "up to 289 mbps". Although that is slower, it is less subject to interference and I think will give you a longer range.