[CA] Axiom 9-C90w-C120- Airmar b744v

[Rcfiftyone]

The model number of my unit is E70366. Serial number is 1270316. Im guessing that I accidentally purchased the unit without any internal fishfinder circuitry. I have already purchased the RV300 transducer. I have also purchased the y-cable you recomended so I could use my Airmar b744v transducer. Additionally I had to get another adapter cable to allow comnection between the "dsm 300" style connector of the airmar xducer and the 7 pin connector on the y-harness. I guess I can only hope that the seller will exchange my axiom 9 for one with the correct internal circutry. Am I correct in thinking that I want the "RV" model so it will compliment the rv300 transducer?