e125 - VHF DSC Intergration via Seatalk

[Chuck - Raymarine - Moderator]

Matt,

Based 14 years with Raymarine product installation, including those on my own boats, I doubt that you will need a NMEA 0183 expander for this application. Think of the function of a NMEA 0183 expander as an amplifier/signal booster. Raymarine does not offer a NMEA 0183 expander, but they are available from third parties such as Noland, Dutec, etc. Such expansion would only be applied to the NMEA 0183 talker leads. Should the VHF radio support RS-422, then no expander would potentially be required for the distance specified. Again, I have seen very few applications throughout the years which required a NMEA 0183 expander.