I want to give praise to Doug Miller at Milltech Marine a supplier of everything related to AIS. For a few years I have used one of their AIS receivers hardwired to a small Garmin plotter. Recently I wanted to upgrade to be able to send the AIS signals via wifi to my laptop nav systems. A couple of people on this list suggested that Milltech had a "dongle" that would transmit the AIS data to my laptops and I purchased a rather inexpensive unit to do this. Being not very computer savvy I really couldn't get the thing to work so I called Doug for help. First he walked me through the set up so my one laptop could see the ships on SF Bay. He was very patient and soon lost in his time whatever profit he made from the dongle sale. Being a greedy guy I then wanted to use the dongle signal to simultaneously send data to both my laptop and iPad. The former runs polar navy and the latter runs isailor or inavx. It turns out you have to change the protocol instructions in these programs to have the dongle service multiple devices. Try as I might I just couldn't get the thing to work. After several email exchanges with Doug he found the magic recipe, Those probably should have been obvious to me in the first place. He even sent the exact screen shots of what the setting should be and then all worked like a champ. What can I say? I have never had this kind of customer support from a vendor for such a small item. I can hardly wait the next six months to try this out on board Lilliana in Alaska. I have no financial interest in this company. Richard P. Willard 30 and 40 Lilliana and Puffin -- Richard Packard Professor of the Graduate School Physics Department University of California Berkeley, CA 94720 510 525 0279