Hello Aviv,
Looks like you can only use channels 36-48 in your case. Yes you can configure smart-RF to only use the non-DFS channels.
SSH into controller and run the following commands:
>en
#conf t
#smart-rf-policy
policyname
#channel-list 5GHz 36,40,44,48
#com wr
#show context
Is this what you are looking for?
Thank you,
Chris
Christoph S.