[CA] [CA11] NMEA 0183 output RL80C

[firepro]

I have an RL80C networked by sea talk and HSB2 with a depth sounder, ST5000 autopilot etc.

I have fitted a repeater that can read NMEA 0183 sentences from the NMEA out of the RL80C.
The repeater requires the entire sentence including the talker ID. When I program it to look for sentences with the EC talker ID I can read navigation data such us heading and distance to waypoint etc. but none of the data relayed from the sounder such as SOG, sea water temp, depth etc.
If I use the ID "SD" for the sounder I still don't see this.
I have all the sentences turned on in the RL80C menu, so why cant I see the data?
Does the RL80C pass the sounder data through with another talker ID or use its own?
What ID do I need for the sentences?