That is the Raymarine Radar antenna cable that would come from the mast mounted antenna down the mast to the helm to the Raymarine chartplotter. I know, I installed one in 2002 and just removed it in 2016.
Yes, we had a junction box just like that at the base of the mast. It's needed so you can pull the mast. Some installers also put one at the bottom of the helm. Eitherway, these mast mounted radar antennas require this.
What exactly are you doing? Pulling out old cables? Running a new cable? Installing a new nav at the helm? Installing a new radar antennavon the mast?
If your radar antenna junction box is under the helm, do you also have one under the mast? Is your radar antenna on the mast?
You need to look at the install manual for your radar antenna, identify which way the cable runs. I think it's a female, like your puctute, that plugs into the display. That's the way mine was, it was an RL70c. Up at the antenna end, that end usually has plain wires screwed to connectors or newer ones like my new B&G 4G radar has wires and ethernet plug.
islanddreamer replied the topic: What cable is this?
We nicked the old cable while doing some other repairs so have to replace it. The first connector I showed is on the cable that comes out of the mast. There's quite a lengthy cable in a spool from the mast to that connector.
The cable then runs under the floor up behind the small spice cabinet by the sink in the galley to the junction box shown in the second photo. I'm looking to replace that cable run. I need a male end to mate up under the mast and bare wires to the junction box under the binnacle.
OK, now I understand. Here is what I would do. Since you have extra cable in a spool under the mast, why not just pull extra and make another junction box where you nicked the cable run. There is nothing special about junction boxes, they are there to ease install. So, go to the nick wire area, pull some extra wire towards that, cut it and six your nick. That will work. Otherwise you will need to find this cable used off Ebay because it looks like an old analog Raymarine Radar antenna cable. I would focus on fixing the nick by simply cutting the wire and stripping the wires and but connect them together then heat shrink the joint. Done.
Would that work?