Thread: 787c2i problem

997 interlinked to 787, 787 speed is all over the place, update rate stalls then updates, cant even get back to a waypoint without shooting past it or going wrong way. What now? Invest in handheld for gps?

i know i 787c2i will not reaqd correct speed unless i have a external antenna hooked to it it jumped around all over the place. I even sent it back to humminbird twice aqnd they finall hooked it to antenna and it read a constant speed i have mine interlinked to a 1197 and have to recievers hooke to them to get the fast refresh rate they work good till you slow down to .5 then the dreaded donut pops up hope this helps