Hi Fred,

SeaTalk HS is Raymarine's term for an Ethernet network.  SeaTalk 1 is an older serial protocol used by Raymarine.  It's pretty close to NMEA 0183 but there's not a way to directly convert from one to the other.  You can convert SeaTalk 1 to NMEA 2000 and then NMEA 2000 to WiFi or Ethernet but that may not be useful for what you're trying to accomplish.  If you can tell us a little more about what you're trying to do we might be able to make some suggestions.   

Ben

Thanks Ben for your quick reply. After lots of searching I realized that fact you mentioned. My friend who has a boat with lots of boxes of old equipment in fairly good condition. He has a dsm 30 module with no display with seatalk-hs. He has a working seatalk1 and seatalkNG (white connectors) I am trying to run his airman transducer into a seatalk white connector system .  I’m trying to figure a way to get just the depth and speed readout without the dsm 30 module then. Any help would be great.

Fred, do you know the model of the Airmar transducer?  I expect the transducer will need a sounder module (the role the DSM-30 plays) but I'm not as strong as I'd like to be in Sonar.  Perhaps someone else can chime in.  

Ben

@ben-stein

THAnks Ben. As I’m not his boat right now I’m thinking there is one airman transducer for sonar and another for speed and hopefully depth. Anyway going to research that and will get back to you!

Seatalk Ng use the same protocol as NMEA 2000 but have different connection(more wires than NMEA 2000).