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Forum Discussion
Valore Frequenza TX Orbi RKB752 e 852
Salve a tutti, ho una domanda piuttosto tecnica: mi chiedevo qual è la massima velocità ottenibile per connessioni in wifi AC con questi router. Attualmente il valore "frequenza tx" che ottengo c...
Sorry I thought it was the italian community! My mistake!
I would like to know what is the AT frequency that I would get connecting a wifi 5 device to an Orbi RKB852. If I connect my iMac to Orbi RKB752 I get "866Mbps". Would I get an higher value if I were using an Orbi RKB852?
I'm talking about this value (in the pic there is the value I got with the previous ISP router)
What is the model of the imac. Older iMacs may not support higher connection rates. Contact Apple support to see what connection rates are supported on you mac. My 2018 mac book pro caps at 1300Mpbs but it's not AX supporting.
It's the last iMac avaible. Airport Extreme doesn not support 802.11AX but 802.11AC up to 1300Mbps but I don't know why with Orbi RKB752 it gets "only" 866Mbps. I thought that wifi speed was up to 1200Mbps.
What OSX version is loaded?
Yes. Should be 1200 on 5Ghz.
"600 + 1200 + 2400Mbps"
Be sure WMM is enabled. I don't think changing CTS values will help, though you can try. Under Advanced Tab/Advanced Settings/Wireless Settings change to 1500 or 2347 and see.
MacOS Big Sur, nothing changed that's why I was wondering if only ORBI RKB852/3 has 1300Mbps AC Wi-Fi speed..
Fra11 wrote:It's the last iMac avaible. Airport Extreme doesn not support 802.11AX but 802.11AC up to 1300Mbps but I don't know why with Orbi RKB752 it gets "only" 866Mbps. I thought that wifi speed was up to 1200Mbps.
"last iMac" isn't a great description, however, it's perfect in line with the substandard information Apple does deliver on thier Wi-Fi clients in place on their products. Luckily, 3rd party references confirm the Airport Extreme 802.11ac up to 1300Mbps - this happens while operating on 3x3 and the highest standard modulation:
From the RBK75x (AX4200) vs. RBK85x (AX6000) specs.
- AX4200 Tri-Band WiFi : 2.4GHz (600Mbps†) + 5GHz (1200Mbps†) for WiFi devices to connect to the Internet. 5GHz (2400Mbps†) dedicated WiFi link for faster data connections between Orbi Router and Orbi Satellite
- AX6000 Tri-Band WiFi : 2.4GHz (1200Mbps†) + 5GHz (2400Mbps†) for WiFi devices to connect to the Internet. 5GHz (1200Mbps†) dedicated WiFi link for faster data connections between Orbi Router and Orbi Satellite
Now, this is almost like Apple specs - but we can recursively figure out what is going on. The "...for WiFi devices to connect to the Internet" is designating the max PHY link speed between the client and the Orbi router or satellite, the so called fronthaul; the dedicated WiFi link does make up the backhaul.
The RBK75x is a marketing-wise stripped down version RBK85x - however it's essentially using the same hardware and WiFi radios - but for a different purpose: The fronthaul and backhaul radios are swapped.
Looking into the 802.11ax side does how this:
The max.1200 Mb/s fronthaul on the RBK75x is made up from a 2x2 radio, while the max. 2401 Mb/s is made up from a 4x4 radio.
Because of the Airport Extreme 802.11ac up to 1300 Mb/s is a 3x3, but the RBK75x is only 2x2, the max 802.11ac link rate to these devices is limited to 866 Mb/s. In recursion, we can assume the same iMac should be able to make the 1300 Mb/s link rate against the RBK85x.
Than you duckware for the always informative reference for explanaitons!
Regards
-Kurt
PS. The transalation "Frequenza TX" is awful - it's about the negotiated PHY link rate. Your provided screenshot helped a lot 8-)
