AVM FRITZ!Box 3270 Installation, Configuration And Operation page 57

Frequency Ranges
Allocation of the WLAN Channels in the 5-GHz Range
Channel Frequency (GHz)
36
40
44
48
52
56
60
64
100
104
5.18
5.20
5.22
5.24
5.26
5.28
5.30
5.32
5.50
5.52
57
Channel Frequency (GHz)
108 5.54
112 5.56
116 5.58
120 5.60
124 5.62
128 5.64
132 5.66
136 5.68
140 5.70 (20 MHz band-
width only)