Is there a DST Transducer RCA cable to USB convertor?

[Traveler7]

Hi Open CPN Enthusiasts!

I bought a 1975 C&C 33 Mk1 that had the cables cut from its transducers and the head unit removed.

The Depth transducer is a DST-50 unit which uses an RCA cable to send data to the head unit. Is there a converter I can buy that will allow this cable to interface with my USB connection to my Raspberry Pi? I will be plugging it into an independent power USB multiconnector so power is not an issue.

I cannot believe that someone has not done this so hoping to stand on the shoulders of giants, so to speak...

Cheers!

[Traveler7]

I figured it out- I will connect to a Raymarine ST60 Depth Head unit and connect the Seatalk 1 to a Seayak Seatalk 1 NMEA 0183 to USB interface. Should be easy to configure through Signal K like I did with my GPS dongle.