Why two Wireless devices radio0 vs. radio1

[Naftali]

Hi

radio0

Qualcomm Atheros QCA9880 802.11nac
Channel: 36 (5.180 GHz) | Bitrate: 532.6 Mbit/s

vs

radio1

Generic 802.11bgn
Channel: 11 (2.462 GHz) | Bitrate: ? Mbit/s

can I delete radio1? They have different GHz, what does that mean?

Harware:

Model
TP-Link Archer C7 v5
Architecture
Qualcomm Atheros QCA956X ver 1 rev 0
Firmware Version
OpenWrt 19.07.3 r11063-85e04e9f46 / LuCI openwrt-19.07 branch git-20.136.49537-fb2f363

[lleachii]

5.4 GHz and 2.4 GHz, respectively. Simple.

@Naftali

5.180 GHz

@Naftali

2.462 GHz

(Your answer was contained in your question.)

@Naftali

They have different GHz, what does that mean?

Ummmmmm...

Spectral band

Some devices work on 2.4, some work on 5.4...some devices can access both bands.

[Naftali]

which devices work only on 2.4? Is this some legacy standard?
All devices I connected to 5.4...

[lleachii]

@Naftali

which devices work only on 2.4? Is this some legacy standard?

!?!?!?

Are you serious or joking.

Again:

@lleachii

Some devices work on 2.4, some work on 5.4...some devices can access both bands.

@Naftali

All devices I connected to 5.4...

Then this mean you know what is is, correct?

I'd suggest to leave it alone until you understand radios more. Disable if you honestly have no 2.4 devices that need to connect and it keeps bothering you.

Most modern wireless routers have radios for use with both bands.

[dana44]

Don't delete it. Some devices like 2.4Ghz while others like to speak on 5GHz.

2.4Ghz goes best through walls, but 5Ghz will usually give you better speed.

[Naftali]

@lleachii

Then this mean you know what is is, correct?

No. It's by chance. Which has more performance?

[leeandy]

I guess you're confusing 5G of wifi & 5G of cellphone. Are you worried that using 5G wifi will cost your money ?

[Naftali]

@leeandy

I guess you're confusing 5G of wifi & 5G of cellphone

I not use a SIM card in router. So no

[lleachii]

@Naftali

It's by chance.

????

@Naftali

Which has more performance?

• If a device can use both, usually the 5.4 GHz radio is better
• If a device only has 5.4 GHz radio, no choice, you use the 5.4 GHz radio
• But if a device only has a 2.4 radio there is no choice, you have to use 2.4...

I really think you're misunderstanding here...

[Grommish]

Not only that, but even dual-band devices that use both 2.4Ghz and 5Ghz will drop to the 2.4Ghz band the farther away you get from the device, since 2.4Ghz has a much better range and less of a chance of being blocked by items between you and the base-station (at the expense of bandwidth speed).

If you aren't really using it, then just Disable the WiFi entry for 2.4Ghz, don't delete the radio itself. You never know when you might need it (most IoT devices are 2.4Ghz, for example, as are older devices)

[lleachii]

I love you too!