Navico B&G NRS-2 VHF + AIS Lowrance Simrad Transponder Black Box Radio Black BoxNavico B&G NRS 2 VHF & AIS Lowrance Simrad Transponder Black Box Radio Black Box Professionally remanufactured with warranty. The Navico NRS 2 VHF Black Box Radio offers safe navigation with its integrated Class B AIS transponder and GPS. It supports up to eight handsets (four wired and four wireless) and four external speakers, ensuring connectivity from anywhere on board. Product number 000 15642 001, it is part of the NSR series and is sold as a