[DG] [DG11] Electric storms killing SeaTalkNG ports

[Derek - Raymarine - Moderator]

Hi Ulf,

Thank you for your enquiry.

This is an unusual scenario and yes - bad luck just does not explain it!

The first issue regarding EMP or local static discharge - this can be very difficult to resolve and this FAQ here will help with ideas to track down the possible causes.

The key to improving protection is to take care with grounding and how equipment, deck fittings, hull fittings and masts are grounded, similarly there needs to be a dedicated RF ground installed and care when grounding the battery negative needs to be taken to ensure this is not compromised during connection to equipment.

It would also be a good idea to check the vhf antenna and AIS antenna to make sure there is no possible leakage for RFI there and we suggest also connecting the AIS through NME0183 and the vhf through NME0183 since this will interpose an opto isolator into the system between the antenna and the equipment and will add an additional layer of resilience to the system onboard.

Regards

Derek