73 is a ham radio term that is similar to saying "Thanks and good luck" or similarly "Best wishes" Tradionally 88 is "love and kisses" -typically sent to the operator's wife. "73s Bill and 88s to your XYL" -or naming her. And never plural. It's 73 and 88, not 73's or 88's. That would be best wisheses and hugs and kisseses. Kurt