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Where did you find that. I looked all over the HB site.. Chuck
Thanks for the help. I am surprised that the wider units don't have the internal antenna option.There are lots of boats with no really good place for an external antenna. Fay
It was a good questiion. Maybe it should be re-added. dont want to know about your kidneys.... Chuck
This was the best that I could find though it is not the one I was thinking about: http://www.humminbird.com/FAQ.aspx?ContentId=1870 It was not easy to find either, which means not many others will find it either.
Fay, Most of the folks that buy the Si units like to be able to mount the GPS Receivers as close to directly over the transducer as they can to help increase the marking of waypoints from the sonar Views. Having the transducer in one location and the GPS Receiver in another will introduce inaccuracies in the waypoints marked when using sonar. I would also guess that a higher percentage of larger boats that have cabins would have the larger units versus the smaller ones. If we sold the larger units with internal GPS Receivers than they would have to purchase and mount an external GPS Receiver for the GPS to work.
They can be anywhere up to twice the linear distance between the transducer and GPS Receiver (plus the inaccuracy of the GPS system we are allowed to use). So if I install the GPS Receiver six feet away from the transducer, when coming back to that same waypoint my transducer could be anywhere up to twelve feet away from the structure I marked – all depending on the heading of the boat when the original waypoint was marked and when I returned to it.