Septentrio mosaic-G5 GNSS Receiver — 789 Channels + Free PPP
Eview GNSS Technology integrates the Septentrio mosaic-G5 — Septentrio’s highest channel-count compact GNSS module — into professional RTK receivers built for survey, UAV, and precision agriculture applications. This page covers mosaic-G5 specifications, performance, and the Eview products powered by it.
The Septentrio mosaic-G5 P3 is the most advanced compact GNSS receiver module in Septentrio’s lineup, tracking 789 hardware channels across all constellations and all frequencies including Galileo E6/HAS for free PPP correction worldwide. Like all Septentrio chipsets, it includes AIM+ hardware anti-jamming and SLAS anti-spoofing as standard.
Septentrio mosaic-G5: Key Specifications
| Parameter | Specification |
|---|---|
| Channels | 789 hardware channels (P3 variant) |
| Constellations | GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC, SBAS |
| Frequencies | L1, L2, L5 + Galileo E6 (all constellations) |
| RTK accuracy (horizontal) | 1 cm + 1 ppm |
| RTK accuracy (vertical) | 2 cm + 1 ppm |
| RTK initialisation time | <10 seconds (typical, multi-frequency) |
| Free PPP via Galileo HAS | Yes — decimetric accuracy, no subscription required |
| Update rate | Up to 100 Hz |
| Anti-jamming | AIM+ (Advanced Interference Mitigation Plus) |
| Anti-spoofing | SLAS + Galileo OSNMA |
| Data output | NMEA 0183, RTCM 3.x, SBF, RINEX 3 |
| Interfaces | USB, UART ×4, SPI, CAN, Ethernet 100Base-T |
| Power consumption | ~1.4 W typical |
| Operating temperature | −40°C to +85°C |
| Module dimensions | 71 × 59 × 12.7 mm |
What Makes mosaic-G5 Unique
Galileo E6 / HAS: Free PPP Without a Subscription
The mosaic-G5’s most distinctive capability is native support for Galileo High Accuracy Service (HAS) — a free, globally broadcast PPP correction service transmitted on the Galileo E6 signal. No subscription, no SIM card, no internet connection required. HAS delivers decimetric-level positioning accuracy (typically 20 cm horizontal) anywhere in the world with Galileo signal coverage, making the mosaic-G5 the preferred chipset for remote-area survey, offshore operations, and applications where cellular NTRIP connectivity is unavailable.
789 Hardware Channels: Maximum Signal Redundancy
With 789 hardware channels, the mosaic-G5 P3 simultaneously tracks every visible satellite on every available signal — including L1, L2, L5, and E6. This full-sky, full-frequency tracking provides maximum ionospheric correction capability, faster RTK ambiguity resolution, and improved positioning reliability in partially obstructed environments such as tree canopy, urban canyons, and near-vertical surfaces.
AIM+ Anti-Jamming: Hardware RF Protection
Like all Septentrio chipsets, the mosaic-G5 includes AIM+ (Advanced Interference Mitigation Plus) — hardware-level interference detection and suppression operating at the RF front-end stage, before signals reach the digital correlator. Narrowband jammers, wideband interference from industrial equipment and 5G, and pulse interference from radar are all handled without impacting positioning accuracy on clean signal bands.
mosaic-G5 vs mosaic-X5 vs Competing Chipsets
| Feature | Septentrio mosaic-G5 P3 | Septentrio mosaic-X5 | u-blox F9P |
|---|---|---|---|
| Channels | 789 | 448 | 184 |
| Galileo E6 / HAS (free PPP) | ✅ Yes | ✅ Yes | ❌ No |
| Hardware anti-jamming | ✅ AIM+ | ✅ AIM+ | ❌ Software only |
| Anti-spoofing | ✅ SLAS + OSNMA | ✅ SLAS + OSNMA | ❌ |
| RTK init time | <10 sec | <10 sec | ~25 sec |
| Update rate | 100 Hz | 100 Hz | 20 Hz |
| Ethernet interface | ✅ 100Base-T | ✅ 100Base-T | ❌ |
| Best for | Max channels, free PPP, remote ops | Cost-optimised professional RTK | Hobbyist / entry-level |
Note: Eview GNSS integrates exclusively Septentrio chipsets across all products.
Eview GNSS Products Powered by Septentrio mosaic-G5
Eview integrates the mosaic-G5 into professional receivers for industrial drone, precision agriculture, and survey applications. Contact tina.ng@gnss-solutions.com for the current mosaic-G5 product lineup and availability, or browse all Eview GNSS receivers.
mosaic-G5 Applications
Remote Area Survey and Mapping
Galileo HAS free PPP makes the mosaic-G5 ideal for survey operations in areas without CORS network coverage or reliable 4G connectivity — including offshore, mountainous terrain, and remote agricultural land. Achieve decimetric accuracy with zero recurring correction service costs.
Precision Agriculture and Auto-Steer
The mosaic-G5’s 789-channel tracking delivers maximum satellite availability across large open fields. 100 Hz output rate supports high-speed auto-steer systems on modern agricultural equipment, and Galileo HAS provides correction coverage where CORS networks don’t reach.
Industrial UAV Payloads
AIM+ anti-jamming, 789-channel tracking, and Galileo HAS support make the mosaic-G5 the preferred chipset for industrial drone applications requiring maximum positioning resilience — including corridor mapping, infrastructure inspection, and precision delivery.
High-Accuracy Machine Control
Construction, mining, and port automation applications benefit from the mosaic-G5’s high channel count and multi-frequency tracking in RF-challenging environments near heavy equipment, metal structures, and industrial radio systems. AIM+ maintains centimetre accuracy where lower-spec chipsets lose lock.
Where to Buy Septentrio mosaic-G5 Receivers
Eview GNSS Technology is a Septentrio integration partner supplying mosaic-G5-based receivers globally. Browse products at gnss-solutions.com/shop or contact tina.ng@gnss-solutions.com for volume pricing, custom configurations, and application-specific recommendations.
Frequently Asked Questions
What is the Septentrio mosaic-G5?
The Septentrio mosaic-G5 P3 is a compact OEM GNSS receiver module with 789 hardware channels tracking all GNSS constellations on all frequencies including Galileo E6. It supports free Galileo HAS PPP corrections, AIM+ hardware anti-jamming, and SLAS anti-spoofing — delivering 1 cm + 1 ppm RTK accuracy and decimetric PPP accuracy without a correction subscription.
What is Galileo HAS and why does it matter?
Galileo High Accuracy Service (HAS) is a free PPP correction service broadcast on the Galileo E6 signal by the European GNSS Agency. It delivers globally available decimetric positioning accuracy with no subscription fee, no internet connection, and no SIM card. The mosaic-G5 receives and decodes HAS corrections natively — ideal for remote operations where NTRIP CORS networks are unavailable.
What is the difference between mosaic-G5 and mosaic-X5?
Both are Septentrio chipsets with AIM+ anti-jamming and centimetre RTK accuracy. The mosaic-G5 P3 has more hardware channels (789 vs 448). The mosaic-X5 is the cost-optimised choice for applications not requiring maximum channel count. Both are integrated by Eview GNSS into professional receivers.
Does mosaic-G5 support RTK and PPK simultaneously?
Yes. The mosaic-G5 streams real-time RTK NMEA output while simultaneously logging raw GNSS observations in SBF and RINEX 3 for PPK post-processing. Galileo HAS PPP corrections also run concurrently — all three positioning modes at the same time.
Can mosaic-G5 connect to NTRIP for RTK corrections?
Yes. Eview receivers with integrated 4G LTE modems connect directly to NTRIP CORS networks for centimetre RTK. When NTRIP is unavailable, the mosaic-G5 automatically uses Galileo HAS free PPP corrections received directly from satellites — providing decimetric accuracy with no connectivity required.
Ready to order? Visit our GNSS receivers shop or contact tina.ng@gnss-solutions.com for expert guidance on the right receiver for your application.