> For the complete documentation index, see [llms.txt](https://docs.premium-positioning.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.premium-positioning.com/guides/comnav-n5-t30.md).

# ComNav N5 / T30

These steps connect a ComNav N5 / T30 to the Premium Positioning correction network over NTRIP, using Compass / SurvStar (Android). They assume you already have your NTRIP credentials.

### Before you start

* Your NTRIP username and password, from your Premium Positioning welcome email or your account on the customer portal.
* Compass / SurvStar (Android).
* A working internet connection on the controller or phone.
* A clear view of the sky at the point you are measuring.

### Network settings

These are the same for every Premium Positioning customer. Only your username and password are unique to you.

* Server or host: rtkpremium.xyz
* Port: 2101
* Mountpoint: COMMON
* Protocol: NTRIP

### Steps

1. Power on and charge before you start: Switch on the N5 / T30 and give it a clear view of the sky (outdoors, away from buildings/trees). Power up your Android controller/phone and confirm it has working mobile-data or Wi-Fi - corrections come over the internet.
2. Open the field software and create/open a job: Launch Compass or SurvStar. Open or create a project ('Project'/'Job' menu) so survey data has somewhere to go. Wording varies by app version - look for the equivalent option.
3. Connect to the receiver over Bluetooth: Go to the connection screen ('Device' > 'Connect', or 'Config' > 'Communication'). Choose Bluetooth, search/scan, and select your receiver by its serial number. Pair if prompted - ComNav units commonly use PIN 0000 (some 1234). Wait for connected status.
4. Set the receiver to Rover mode: Open the working-mode screen ('Device' > 'Rover' / 'Work Mode', or 'Config' > 'Work Mode') and select Rover (also 'Auto Rover' on some menus) so it receives corrections.
5. Set the datalink to network / internet: In Rover settings, set 'Datalink' to the internet option - 'Internet', 'Network', 'GPRS', 'PDA Network' or 'Phone Internet' depending on whether the controller or the receiver's SIM provides the connection. Choose the controller/phone internet option unless you have a SIM in the receiver. Not Radio.
6. Choose NTRIP as the protocol: With the datalink set to network, select Protocol NTRIP ('Ntrip' / 'NTRIP Client'). Not APIS, TCP/IP direct, or other protocols.
7. Enter the caster address and port: In the NTRIP / CORS settings: Host / Server / IP: rtkpremium.xyz, Port: 2101 (same for every customer). If the field is 'IP' and only accepts a numeric address, use the 'domain'/'address' field, or contact support for the resolved IP. Protocol stays NTRIP.
8. Enter YOUR NTRIP username and password: Type the NTRIP username/password issued to YOU in your welcome email - unique to your account; do not use anyone else's. The connection fails without your own valid credentials.
9. Retrieve the source table (mountpoint list): Tap the button that fetches the streams - 'Get', 'Get Source Table', 'Get Mountpoint', or a refresh icon next to the mountpoint field. If nothing appears, re-check host, port, internet, and credentials.
10. Select the COMMON mountpoint: From the source table, select COMMON - the fixed mountpoint for all customers. Scroll/search if the list is long. Confirm/OK.
11. Connect to the caster: Tap Connect ('Apply' then 'Connect', or 'OK'). The app logs in to rtkpremium.xyz with your credentials and streams RTCM. A connection/active indicator or data-flow counter starts.
12. Confirm a Fixed solution: Watch the solution status (main survey screen or status bar): Single → Float → Fixed within \~10 - 60 s under open sky. Only at Fixed are coordinates at full cm accuracy. If it stays Float/Single, check that COMMON is selected, you have open sky, and your credentials/internet are correct.
13. Start surveying: Once Fixed, go to your measure/stakeout screen and collect points. If the connection drops, re-open the NTRIP/datalink screen and tap Connect again; the saved settings should still be in place.

### If the fix will not hold

Compass and SurvStar are both Android apps for ComNav/SinoGNSS receivers and share the same flow, but exact menu/button names differ between apps and versions - treat 'Datalink', 'Get Source Table', 'Work Mode' as the nearest equivalent if your screen differs. The receiver needs clear sky and the controller needs working internet.

For more, see RTK corrections troubleshooting and Fix inconsistent RTK accuracy on site.

### Need help

Support is available 24/7. Include your receiver model, the mountpoint, the solution status, and the correction age when you get in touch.