Yup - got that figured now thanks.
Also worked out that if you don't do it in that order you will get the pop up re WLAN settings. If you click OK instead of ignore then it will force FCC mode. (Did it the wrong way round first of all and saw no better distance performance).
Have been out to 1km on 5.8ghz so definitely in FCC mode and very happy with results.
Thank you very much for your efforts and work, it is much appreciated. ;)