jfkal
Well-Known Member
Does anyone know whether Seatalk HS is just standard Ethernet Cat ? or is it really something special and not compatible?
No, the Raymarine HS is bog-standard ethernet. All you need is a standard 10/100 ethernet switch to connect things up. I actually use my broadband router's 4-port switch to connect my laptop, E120 display and DSM300 unit. Only thing with a standard switch is that you need to ensure it can't get wet. Just be aware that the CAT5 connection on the Raymarine kit seems to be subtly different and a standard CAT5 plug doesn't make connection properly. This means you need to get the shortest Raymarine HS cable (therefore the cheapest - still expensive) then use CAT5 connectors and standard CAT5 cable for the rest. I actually used CAT5S (screened) cables.
You could cut the cable and join with a method of your choice. I chose to keep cables in tact and use the joiners (small box with a socket each end). I take it you have a digital or HD digital dome if you have an HS cable for this? As for difference between cable and patch, I guess one could be a cross-over cable (i.e. device to device without a switch or hub in between).