Certainly here in the UK and probably many (or all?) countries people seem to have licence free access to the 40.66-40.70 MHz ISM band as long as any national conditions are met. In the UK this means 10mW ERP maximum and full compliance with IR2030. Interference must be accepted and not caused. We know from Australia that 5mW 8m WSPR has been received at 5000km, so much of Europe could be spanned on 8m WSPR by anyone.
This is NOT the Amateur Radio Service!
This probably means any ISM band may be used licence free as long as national law is followed, although I have not asked OFCOM specifically about other ISM bands. Remember OFCOM only covers the UK. You have to either be sure of the legality in your country or seek legal advice if you are unsure.




