I'm in the process of adding either a Helix 10SI or Helix 12 Chirp SI unit to my dash on a Cobia 24' center console. I already have an 1198c SI and radar. I want the unit for duplication, redundancy and convenience of watching 2 full screens. I fish blue water up to 50mi offshore, generally wreck fishing and want a backup system to get me home, just in case.
I have a couple of questions to guide me on setup. In essence, I will use the new Helix as my primary for navigation and scanning and the 1198 as backup and radar display when running blue water during darkness. When I'm wreck fishing, I will use the Helix for DI/SI scanning and have the 1198 for navigation.
1. According to the HB website, the transducer XHS9HDSI 180T is the same for my 4 year old 1198cSI and the new Helix units. If that's the case, I will probably mount the new ducer that comes with the Helix on the opposite side of the 300 YAM and run 1 ducer at a time to eliminate any interference. 1198cSI is only side imaging/traditional while the Helix is SI/DI and traditional. Does that make since or is there a better way to setup? The 2 ducers would be about 3' apart with the outboard in the middle.
2. I have a HB 21" radar to my HB 1198 unit. Is there a way to use a Y cable to I can have the ability to view radar on by units at the same time? I thought I could ethernet both units although if I remember the radar plugs into the 1198 where the ethernet cable would go. I could be mistaken, seeing a diagram of where to plug what in is appreciated. If a Y cable will work, what is the part #?
3. My 1198cSI has an ASGR50 external GPS puck. The Helix will accept either AS GPS HS (+compass) or the AS GRHA external. Can the 1198cSI and the Helix be operated off the same external GPS or are there differences and I should install a separate external antenna to the Helix? While some folks may say the Helix has an internal antenna, I have a center console, with a hard top, 2 guys huddled around the unit plus lots of "stuff" on the console top.... I imagine there may interfere with an internal antenna's reception.
4. Are there written procedures for downloading all my way point marks from my 1198cSI and transfer them to the new Helix?
Thanks for all the assistance.