After recently doing some passage making on a vessel carrying a raymarine AIS transponder I made a decision I want to upgrade the vesper 650 receiver to a receive and transpond unit.

i looked at the raymarine transponder but then discovered the vesper 8000 for roughly the same price. I like he idea of wifi and app so it can used on my iPad.

On the recent passages I used both the marine tragic and the raymarine chart plotter. Problem with Marine tragic is when your VHF antenna looses shore base connection it stops your track which is frustrating for all that are trying to track you through marine tragic.

the wifi won't solve this problem but seems very handy if you can set it up on more than one device.

http://www.ebay.com.au/itm/Vesper-Marine-XB-8000-AIS-Transponder-built-in-WiFi-and-NMEA-2000-Gateway-/351677206751?hash=item51e19850df