Hi,
apologies for reopening year old thread, but IMHO it makes sense to have the information in one thread.
Yesterday I stuck several hours fixing something what wasn’t broken.
I have configured CAPsMAN on my friends HapAClite and experienced quite strange behavior at least for me, because it have never occurred to me before.
/caps-man configuration
add name="CAPconfig_AP" mode=ap ssid="AP" hide-ssid=no country="czech republic" \
installation=indoor security=guests-SecConf datapath=guests-DataPathConf
/
The 2.4 GHz was always configured correctly and I could use it right after the router booted up.
But the 5 GHz interface was up just occasionally.
Today I have got the idea to add the CAPs logging and was surprised with following lines. 
Yesterday I was always quick enough to change some config and reboot before it finished the DFS procedure.
And only 2 times I saw the router to pick a channel, where the scan is not 10 minutes long.
I have tried to catch up and read something about the DFS, but I have still some questions.
I could also find over an year old thread discussing the indoor/outdoor option from which I have understood, that router will filter out the channels based on the selection.
Why is than the router picking automatically a channel which is supposed to be used for outdoor?
In most of the cases the router chose the 5640 channel. And guess what? The two czech meteo radars are operating on 5630 MHz and 5645 MHz.
If I am wrong and the 5640 can be used also for indoor, than why the router isn’t always starting on the indoor “only” channels or some other channel outside of 5600-5650MHz, where it could do the less intervening 1 minute CAC phase scan?
thanks for clarifying it
the router is running both RouterOS and routerboard FW on 6.46.4