I have a TP-Link Archer AX12 router at home, and I connect to the 5 GHz network - the speed is higher, but the signal keeps dropping, especially if I move to the next room. On 2.4 GHz everything is stable. What could be causing this and how do I fix it?
The 5 GHz band has a much shorter range and doesn't penetrate walls as well - that's just how it is, not a router bug. Try moving your router higher up and closer to the center of your apartment, make sure there's no microwave or other interference nearby, and check in the settings which channel it's set to (sometimes the automatic selection doesn't work great). If that doesn't help, try switching to 2.4 GHz for a bit just to test, or check if your router is overheating and whether it has enough ventilation.
The 5 GHz band operates at higher frequencies than 2.4, so the signal spreads worse and degrades more easily when passing through walls and obstacles. This isn't a problem with your router - it's just how radio waves work physically. In practice, 5 GHz is stable in the same room as your router, but farther away you'll start running into issues. Plus, the band itself is less congested in apartments than 2.4 GHz, so you get higher speeds but shorter range.
What you can try: move your router higher up and closer to the wall of the room where you spend most of your time, or put it in the center of your place. Make sure 5 GHz is actually enabled on your router - it might be turned off in the settings. Check in the TP-Link interface which channel it's using - sometimes switching to a different one in the band helps. Also check if there's a microwave or wireless phone operating on 5 GHz nearby, since they can cause interference. If the signal is still weak after all that, just use 2.4 GHz for rooms farther from the router and 5 GHz when you're close to it. That's the normal setup for most homes.
Try logging into your router's web interface first and switching to a different channel in the 5 GHz band - your current channel might be congested by neighboring networks. I had a similar situation, and when I manually selected a less crowded channel instead of using auto, the signal became much more stable even in adjacent rooms. While you're at it, check the channel width in the settings - if it's set to maximum, try reducing it to 40 MHz, which often improves stability at a distance.
Yeah, sure, 5 GHz doesn't penetrate walls as well as 2.4 GHz, but that doesn't mean your router is fine - you could have interference from microwaves, baby monitors, or Bluetooth devices operating on nearby frequencies. You should also update your router's firmware if you haven't done it in a while.
Your colleagues are right about the 5 GHz specifics, but I'd check the obvious stuff first - maybe you've just got fast roaming enabled or some power-saving mode turned on in your Wi-Fi settings on your phone/laptop that's making your device disconnect from the network? Try turning that off first, and then you can experiment with moving your router and changing the channel.
Which device is actually losing the signal - all of them or just one?
I had the same issue - got a newer router thinking it would fix things, but 5 GHz was still unstable. Turned out the channel was overloaded. I went into my router's web interface, checked the Wi-Fi settings, opened the channel analyzer, and switched from automatic channel selection to a specific channel that was less congested in my apartment. The signal started holding up much better even through another room.
but you gotta understand that 5 GHz will always perform worse through walls than 2.4 GHz - that's just physics. if you're just broadcasting Wi-Fi into the next room and the signal drops dramatically, try this too:
- go into settings on your device itself (phone, laptop) and turn off power saving modes and fast roaming if you have them. sometimes the device switches to weaker 2.4 GHz on its own to save battery;
- move the router physically higher and closer to the center of your place, if that's even possible;
- check if your router's getting jammed up with interference from a microwave, wireless speakers, or other 5 GHz devices.
When I ran into something similar, it turned out the router was just sitting on the same shelf as a microwave and a cordless phone - they were creating interference right in the five-gigahertz band. Once I moved the router farther away, the signal stabilized.
But before that, I'd recommend going into the settings and checking whether transmit power is set too high while adaptive power mode is enabled at the same time - sometimes the router tries to compensate for interference and starts throttling the signal harder at the slightest fluctuations. Also pay attention to channel width: if it's set to 160 MHz instead of 80 MHz, on 5 GHz that can cause instability because of more interference.
Everyone's right about the frequency band specifics, but here's what's interesting - sometimes the problem is that the router automatically switches between 5 and 2.4 GHz, and that's when you lose the connection! Try disabling "Band Steering" or "Smart Connect" in the settings (if your Archer AX12 has it) and force yourself to connect only to the 5 GHz network, so you can figure out what's actually causing the trouble - the band itself or this automatic switching.
If the signal is still unstable after you turn off that feature, then go with the advice above - change the channel in your router's web interface (try channels 36, 40, 44, 48 - they're usually less crowded), move the router higher up and farther away from obstacles.
Also check the power settings on the device itself - if your laptop or phone is in power-saving mode, the Wi-Fi module can shut off between connection attempts, and that's exactly what looks like signal loss. In the network adapter settings, try disabling the option like "allow the computer to turn off this device". On your phone, make sure automatic band switching isn't enabled either - sometimes the system gets weird and switches if 5 GHz is slightly weaker.
Don't listen to anyone who tells you it's just how that frequency band works - if your signal drops specifically when you move to the next room over, not at the edge of your apartment, it's more likely a settings issue. Log into your router's web interface and check the transmit power - there's often some kind of limit set there or dynamic power correction is enabled. Try maxing it out if that's an option, and check whether there's something like "TxBF" (beamforming) or similar stabilization tech enabled - sometimes those actually cause instability problems on 5 GHz.
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