Certain Asus routers DO support DFS, e.g. the RT-AC68U and RT-N66U. I am not sure since what firmware version.No. DFS frequencies are not mentioned in the FCC documents at this time. https://fccid.io/MSQ-RTACHN00
Asus typically does not support DFS in their devices. If you search the FCC database for grantee code MSQ with a Frequency Range of 5250-5320 (uncheck Exact Match) with Product Description of "router" you'll see only two Asus routers (ASUS RT-AC3200, ASUS GT-AC9600) with DFS support. Alternatively, here's a list of Asus devices flagged as having DFS support in the WikiDevi database.
The ASUS RT-AC65U also supports DFS but it is registered under the manufacturer's (Edimax) FCC grantee code.
From my European RT-AC68U system log:
Code:
Sep 28 00:17:26 kernel: SKIPPED false Type 4 Radar Detection. min_pw=51 pw_delta=0 pri=5760 fm_min=1030 fm_max=0 nconsecq_pulses=3. Time from last detection = 710158, = 11835min 58sec. Detected pulse index: 16