See the link below. Sea Tow has set up an automated system that allows people to do a radio check. It plays back your transmission so you can hear your own call. http://www.seatow.com/boating_safety/ARC.asp Jim Davis S/V Isa Lei "Coffee tastes better if the latrines are dug downstream from the encampment." US Army Field Regulations - 1861 1308364474.0