Why are channels supported by my interface different from that permitted for an ad-hoc network?

Why are the channels supported for an Ad hoc network ( **12 channels** ) different from those that my interface support ( **35 channels)** ------------------------- * To find the 35 channels, I ran iwlist wlan0 channel * to find those accepted for my ad hoc network cat channel_list | while read i do echo -n "$i: " iwconfig wlan0 channel $i done I have the following error for channels greated than 12: Error for wireless request "Set Frequency" (8B04) : SET failed on device wlp3s0 ; Invalid argument.