Yes. The RSB110-070 is an 18", 2.2kW, 24nm radome that is compatible with your 7" NAVnet 1 system and uses the same scanner cable as you have for the 1732C. The antenna type would need to be set to A which would make the new NAVnet 1 system a 1723C. Please contact an authorized Furuno USA dealer if you want to purchase the antenna.