This is based on my Garmin
I mounted a Garmin
thru-deck connector for the Ethernet. The power I sent through a deck
pass-thru (can’t remember what they’re called) and used heatshrink male/female quick disconnects below deck
No additional shielding, but I have fresh RG-213 for the VHF
I installed the radar with the mast down. Shot Monel blind rivets.
Radar functions beautifully, no RFI between the VHF, radar, wind
, and LED lighting
Regardless of how you do it, I highly recommend having a way of disconnecting in the vicinity of the mast/deck interface. When the mast needs to come down, you will cry when the yard decides it’s easier to cut your cables
them back out. With QDs, you can unplug and seal everything up in 30 minutes before those clowns start taking the rig down.