from mk_rb4011_exec import run
print("--- monitor ---")
print(run("/interface wireless monitor wlan1 once", timeout=30))
print("--- set 20mhz ---")
print(run(r"""
:do { /interface wireless set [find name=wlan1] channel-width=20mhz frequency=5180 band=5ghz-a/n/ac disabled=no } on-error={:put "set fail"}
:delay 3s
/interface wireless print where name=wlan1
""", timeout=40))