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Posts: 117
| Call h-bird CS, they'll walk you through it and are quite good. Or, go to the hummingbird sonar forum at bassboat central. Most of the bassboat guys use 2 separate transducers for one unit (a shoot-through for 2-D on plane readings and a separate SI ducer mounted on a jackplate), connected with a Y-cable, and I believe the unit knows what ducer to look at automatically depending on what view you are looking at. I'm certain you can set up 2 sonar units to look through one transducer, but then you'll be at the bow looking down through a "window" that's 20 feet behind you...since the sonar screen is already showing what you've passed, that has the potential to not be all that useful, especially if you do any vertical type fishing like dropshotting for smallies, etc. I'd get a separate SI ducer and mount it on the terrova, and run the ducer cable through the groove on the outside of the shaft (you need to pull the head and pull the shaft out of the mount to do this). There is a youtube video from a guy named Doug Vahrenberg that shows how to do this. And yes, you need a separate map chip for each unit, although if you have them linked they can share waypoints (i.e. mark a specific spot such as a sunken rockpile on the SI from the console, then fish and stay on the spot using the waypoint from the bow sonar). | |
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