Had only 1200 or so with 13-20. Yes there can be more interference but the bar graph still tells you the signal strength or interference for all 32 channels. All I can say is it worked for me and doubled my range being on a less congested freq.
I'm sorry to say that this "smart" config doesn't work as expected. It enable RC, but bird trx tables are not updated to 32ch. It just waste time hopping where it will not find anything...
Hmmmmm, auto configure. Will remain between 13-20 but you can choose many more custom channels that have a lot less interference. My channel 32 selected in custom, is void of any transmission so I choose it in custom and I'm set to go without fear of neighboring wifi setups interfering.