[CA] A75 GPS data to GX1500S VHF

[medicsix]

Read through this closed thread by Chuck and have a couple questions:

"Using GPS data from a SeaTalkng/NMEA 2000 GPS source to supply a DSC VHF Radio"

My A75 plotter, I40 Wind, I40 Tri data and Evolution autopilot are all networked and functioning properly.

I have a Standard Horizon Quest-X GX1500S radio that was getting GPS data. It was wired in through a series of splicing, twists, frayed wires, etc that was done by a previous owner. I took it apart to do the SeaTalkng backbone properly for the above instruments.

Now I want to get the GPS data back into the VHF for the DSC feature and on the radio display.

I have the Seatalk cable pictured here - yellow connector, white/black cable, two exposed wires (red and yellow)

If I wire the red & yellow wires on the cable to the VHF NMEA inputs (positive to positive, negative to negative), can I just plug the yellow connector into a "T" at the end of the backbone, or does this need to go through the converter bus (two blue plugs, two white plugs, yellow in the middle)?

Also, what is the difference between these two kits:

https://www.thegpsstore.com/Raymarine-Se...dPEALw_wcB

and:

https://www.hodgesmarine.com/Raymarine-V...ramsegdoh.

Thanks,

Brian

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum medicsix,

Q1. I have the Seatalk cable pictured here - yellow connector, white/black cable, two exposed wires (red and yellow). If I wire the red & yellow wires on the cable to the VHF NMEA inputs (positive to positive, negative to negative), can I just plug the yellow connector into a "T" at the end of the backbone, or does this need to go through the converter bus (two blue plugs, two white plugs, yellow in the middle)?
A1. The pictured cable cannot be connected directly to a spur socket within the backbone. Instead, the backbone must feature a SeaTalk to SeaTalkng Converter, and the pictured cable will need to be interfaced to its SeaTalk (yellow) socket. As indicated within the FAQ found here, should the SeaTalk to SeaTalkng Converter not sense that a device supporting SeaTalk communications has been connected to its SeaTalk (yellow) socket, then the SeaTalk to SeaTalkng Converter will instead transmit 4800 BAUD NMEA 0183 GPS sentences from its SeaTalk (yellow) socket.

Q2. Also, what is the difference between these two kits: a) https://www.thegpsstore.com/Raymarine-Se...dPEALw_wcB and b) https://www.hodgesmarine.com/Raymarine-V...ramsegdoh.
A2. The cable designed to be mated to the SeaTalk socket of the a) E22158 SeaTalk to SeaTalkng Converter Kit features a press fit 3-pin plug designed to permit easy connection to devices having a SeaTalk communications interface and to SeaTalk networking components. The cable designed to be mated to the SeaTalk socket of the b) E70196 VHF NMEA 0183 to STng Converter Kit features a two bare leads to permit the cable to be interfaced to VHF radios and SSBs having a NMEA 0183 communications interface. There is no other difference between these kits.