The simplest, most reliable way to use Anchor Alert is to connect your device to DataHub Wi-Fi and disable auto-join on all other Wi-Fi networks. This means you will receive alerts directly from the DataHub through DataHub Wi-Fi.
How to start Anchor Alert monitoring from your Starlink / Peplink / Other Wi-Fi router
Yes, you can connect to the DataHub via another network on your boat to activate and use Anchor Alert monitoring, e.g. your Starlink/Peplink/Other Wi-Fi router.
By default, Anchor Alert's auto-detect feature will find and connect to the DataHub through your Starlink, Peplink, or other third-party Wi-Fi router.
To verify, open Anchor Alert > Settings > DataHub Connection and look at the IP Address. e.g. 192.168.1.96 or 192.168.50.96. It should match the IP address of the DataHub on that network - either via the DataHub WAN Ethernet connection or 2.4Ghz Wi-Fi tethering. The Connection Status should be 'Active' and green in colour.
Handy Tip: If you're not sure what the DataHub IP address is on your Starlink / Peplink or other network, check the DataHub's Services > Settings > System Status page and scroll down to Network.
Important: If you use Anchor Alert monitoring through another router (e.g., Starlink/Peplink/Other Wi-Fi router) while onboard, you must keep that router's internet connection active so your iPhone or iPad can receive internet-based alerts.
More details
By default, the DataHub sends local alerts via TCP on port 5057. Your iPhone or iPad may not receive these if it is connected to Starlink or Peplink Wi-Fi, so you'll rely on Internet-based alerts from Apple.
If you use Starlink or Peplink Wi-Fi, test it thoroughly to ensure it is reliable.
This prevents a situation where DataHub sends alerts and your device doesn't receive them because the intermediate Wi-Fi router is offline or blocks them.
What to do if Anchor Alert cannot auto-detect the DataHub on your Starlink/Peplink/Other router Wi-Fi network
Open Anchor Alert > Settings > DataHub Connection and tap to disable Auto-detect DataHub IP & Port.
Set the DataHub IP address on your other network (e.g., 192.168.1.x), and confirm the DataHub username and password are correct. Tap Done.
A 'Connection Success!' message is displayed if Anchor Alert has successfully logged into the DataHub.
Tap the < back button in the top-left corner and open the Anchor Map in the bottom-left of the menu bar. You should now see the Wi-Fi radio bars are green in colour. If they are not, tap the Connect DataHub button on the Anchor Map page to attempt log in again.
Very Important Notes - Must Read
To avoid losing connectivity with the DataHub, set a Fixed IP address for the DataHub when using another Wi-Fi network. It is best to do this on your other router, e.g. Peplink.
To set a fixed WAN IP in the DataHub instead, please see this help article: https://help.predictwind.com/en/articles/8606130-datahub-how-to-change-the-datahub-ip-address-and-set-static-ips#h_996dd70e91
If you start an alert session with another Wi-Fi network, you can ONLY receive Internet-based alerts. This means your other Wi-Fi network MUST have Internet connectivity. This is very important because it means if you turn off that Wi-Fi, e.g. Starlink, overnight, then you won't receive alerts if the DataHub sends them. To receive alerts overnight, please reconnect your device to DataHub Wi-Fi.
It is also important to be aware that Starlink can update your router's Firmware at any time without warning, taking it offline for 10m or longer. Therefore, while on the boat, we recommend connecting your device only to DataHub Wi-Fi to ensure it receives alerts.