cherrybim:you are contradicting yourself. If there is no fire-aish ,then why is it ossur on shabbos?
actually, all of the reasons given for the issur of creating electric waves on shabbos -boneh,mevashel,mavir- are the reasons why it should be muttar on yom tov! in actuality, it is not totally clear why electric waves would be ossur on shabbos but, again, puk mo mo diber.