No WLAN channel 12/13

We can’t scan channel 12 an 13 with the RED board
Why could this be?

We use the actual Debian

OSD32MP1-RED-trusted-debian-sdcard-v1_2

It’s set to DE
# iw reg get
global
country DE: DFS-ETSI
(2400 – 2483 @ 40), (N/A, 20), (N/A)
(5150 – 5250 @ 80), (N/A, 20), (N/A), NO-OUTDOOR, AUTO-BW
(5250 – 5350 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS, AUTO-BW
(5470 – 5725 @ 160), (N/A, 26), (0 ms), DFS
(5725 – 5875 @ 80), (N/A, 13), (N/A)
(57000 – 66000 @ 2160), (N/A, 40), (N/A)

The frequency should be usable
# iw list |grep MHz
* 2412 MHz [1] (20.0 dBm)
* 2417 MHz [2] (20.0 dBm)
* 2422 MHz [3] (20.0 dBm)
* 2427 MHz [4] (20.0 dBm)
* 2432 MHz [5] (20.0 dBm)
* 2437 MHz [6] (20.0 dBm)
* 2442 MHz [7] (20.0 dBm)
* 2447 MHz [8] (20.0 dBm)
* 2452 MHz [9] (20.0 dBm)
* 2457 MHz [10] (20.0 dBm)
* 2462 MHz [11] (20.0 dBm)
* 2467 MHz [12] (20.0 dBm)
* 2472 MHz [13] (20.0 dBm)
* 2484 MHz [14] (disabled)

there is no AP with chennel 11 listed
# iw dev wlan0 scan | egrep “freq:|signal:|SSID:” | sed -e “s/\tfreq: //” -e “s/\tsignal: //” -e “s/\tSSID: //” | awk ‘{ORS = (NR % 3 == 0)? “\n” : ” “; print}’ | sort
2412 -53.00 dBm VisionDevices
2412 -84.00 dBm CelenoInitialAP9F180F
2412 -85.00 dBm FRITZ!Box Gastzugang
2412 -88.00 dBm FRITZ!Box Gastzugang
2437 -83.00 dBm
2437 -83.00 dBm WLAN-Gross
2437 -83.00 dBm WLAN-Gross
2462 -67.00 dBm VisionDevices