Speedport W504V operating with 2.4 and 5GHz simultaneously?


the W504V seems to support 2.4 and 5 GHz WiFi (https://www.telekom.de/hilfe/downloads/bedienungsanleitung_speedport_w504v.pdf).

How I can get them operating simultaneously ?

Current setting:

config wifi-device 'radio0'
	option type 'mac80211'
	option path 'pci0000:00/0000:00:0e.0'
	option htmode 'HT20'
	option country 'DE'
	option txpower '14'
	option legacy_rates '1'
	option channel 'auto'
	option hwmode '11g'

config wifi-iface
	option device 'radio0'
	option mode 'ap'
	option encryption 'psk2'
	option key 'mypsk'
	option network 'lan179'
	option ssid 'myssid'


[   14.078286] random: jshn: uninitialized urandom read (4 bytes read)
[   14.239253] owl-loader 0000:00:0e.0: fixup device configuration
[   14.245481] pci 0000:00:0e.0: [168c:0029] type 00 class 0x028000
[   14.250090] pci 0000:00:0e.0: reg 0x10: [mem 0x18000000-0x1800ffff]
[   14.256218] pci 0000:00:0e.0: PME# supported from D0 D3hot
[   14.261915] pci 0000:00:0e.0: BAR 0: assigned [mem 0x18000000-0x1800ffff]
[   14.268257] PCI: Enabling device 0000:00:0e.0 (0000 -> 0002)
[   14.317969] ath: EEPROM regdomain: 0x0



Judging from https://openwrt.org/toh/t-com/spw504v and the high-resolution PCB images, the W504V seems to be equipped with a single AR9220-AC1A (ath9k) dual-band radio. This means, yes, the router is a dual-band device, but not a concurrent dual-band device - as the later would require two radios. As a consequence, you can either configure a 2.4 GHz channel or a 5 GHz channel, but not both at once (which would usually be expected from a router/ AP).

There was a time (until ~2012/ 2013) when vendors may have wanted to tick the "can do 5 GHz" mark on their marketing spec sheet, but were too cheap to actually put two radios on their device, basically cheating their customers. Similar examples of this misfeature would be the TP-Link TL-WR2543nd or Lancom 1821n.

1 Like

Thank you for that explanation.



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