I have the E 80 MFD it is about ten years old. Still good picture. I am thinking of upgrading the sounder to the 100 and 200 combination. Are they compatible.
Welcome to the Raymarine Forum Joseph,
Unfortunately, the E-Series Classic MFDs are not compatible with the CP100, CP200, CP470, or CP570. E-Series Classic MFDs are exclusively compatible with the CP370, DSM30 (retired), and DSM300 (retired) 50kHz / 200kHz Digital Sounder Modules.