When I bought the Broadbill it had no electronics,I installed the 1st axiom 9 mfd with Navionics for steaming the boat home,I recently added 2nd axiom9 RV and have RV transducer waiting to haul boat to install transducer,now that I found this radar I’ll add axiom number 3 so I don’t have to use overlay to slow down processor,am thinking to use axiom 7 strictly for radar,then next month will do autopilot install