What Frequency Bands Does the Septentrio mosaic-X5 Support? Full Spectrum Guide
The Septentrio mosaic-X5 tracks every major civilian GNSS frequency band: GPS L1/L2/L5, GLONASS L1/L2/L3, Galileo E1/E5a/E5b/E6, BeiDou B1I/B1C/B2I/B2a/B2b/B3I, QZSS L1/L2/L5/L6, SBAS and L-band for PPP — 448 channels in one compact module. If a constellation broadcasts a civilian signal, the mosaic-X5 can receive it, on all bands at the same time — which means faster RTK convergence, stronger anti-jamming and better results in obstructed environments than L1/L2-only receivers.
mosaic-X5 Frequency Bands at a Glance
The Septentrio mosaic-X5 processes all four global constellations plus regional and augmentation systems concurrently. Signal list from the official datasheet:
| System | Bands / Signals Tracked |
|---|---|
| GPS | L1 C/A, L1C, L2C, L2P, L5 |
| GLONASS | L1 C/A, L2 C/A, L2P, L3 (CDMA) |
| Galileo | E1, E5a, E5b, E5 AltBOC, E6 |
| BeiDou | B1I, B1C, B2I, B2a, B2b, B3I |
| QZSS | L1 C/A, L1C, L2C, L5, L6 |
| SBAS | L1 C/A, L5 (WAAS, EGNOS, MSAS, GAGAN, SDCM) |
| L-band | PPP corrections (Galileo HAS, TerraStar) |
That covers the full civilian spectrum: 1575.42 MHz (L1/E1/B1C), 1227.60 MHz (L2), 1176.45 MHz (L5/E5a/B2a), 1207.14 MHz (E5b/B2b), 1268.52 MHz (B3I), 1278.75 MHz (E6/L6) and 1525–1559 MHz for L-band PPP. Few modules in its class match that coverage without sacrificing channels.
Why Multi-Band Matters: L1, L2 and L5
Single-frequency receivers correct the ionosphere with broadcast models, leaving residual errors of metres during solar activity. A dual- or triple-band receiver measures ionospheric delay directly across L1/L2 or L1/L5, removing almost all of it — which is why the mosaic-X5 reaches centimetre-level RTK with typical convergence under one second.
The L5/E5a band (1176.45 MHz) matters most: it is a modern civil signal with higher power and wider bandwidth than L1 C/A, so multipath rejection improves. GPS L5, Galileo E5a and BeiDou B2a share the centre frequency, so one front-end covers three constellations — a key reason the mosaic-X5 holds RTK fix under canopy and in urban canyons. For how band choice interacts with jamming resistance, see our anti-jamming and anti-spoofing GNSS solutions.
Modern Signals, L-Band and PPP
The mosaic-X5 also tracks the newest civil signals: GPS L1C and BeiDou B1C (next-generation L1), Galileo E6 and QZSS L6 for high-accuracy services, GLONASS L3 CDMA and SBAS L5. Tracking them today future-proofs designs as legacy signals are retired.
Its L-band input receives PPP corrections like Galileo HAS and TerraStar directly from satellites — no NTRIP caster or base station needed — giving decimetre-to-centimetre accuracy anywhere with sky view, ideal for agriculture, marine and remote survey. RTK and PPP share one receiver, and PPP-RTK hybrids converge faster than classic PPP.
The mosaic-X5 Inside Eview Products
Eview builds the mosaic-X5 into every form factor, so you get the full band table in each. The Eview GNSS Receiver Box pairs it with the AIM+ anti-jamming front end that suppresses interference by 40–60 dB, versus roughly 25 dB for typical u-blox receivers. For embedded work, the GNSS boards and OEM modules range exposes the mosaic-X5 on carriers with USB, UART, SPI, I2C, CAN and Ethernet, plus the Septentrio SDK for ROS and custom firmware.
Because all bands live in one 448-channel core, Eview ships the same receiver for UAV, robotics, construction, mining, survey and agriculture without hardware variants — band configuration is firmware. For aerial platforms, see RTK GNSS for drones and UAVs.
Which Bands Do You Actually Need?
Open-sky work runs fine on L1/L2 RTK. Add canopy, urban canyons or heavy RF noise and extra bands pay for themselves: more satellites, faster ambiguity resolution, better multipath rejection. On autonomous platforms, full-spectrum tracking also gives AIM+ more observables when it nulls jammers — the practical reason engineers upgrade from L1/L2-only modules.
Frequently Asked Questions
Does the Septentrio mosaic-X5 support GPS L5?
Yes — GPS L5, Galileo E5a and BeiDou B2a, all at 1176.45 MHz, giving triple-constellation coverage on one modern band and better RTK robustness in obstructed environments.
Does the mosaic-X5 support L-band for PPP?
Yes. Its L-band input receives satellite-delivered PPP corrections such as Galileo HAS and TerraStar, giving decimetre-to-centimetre accuracy without a base station or NTRIP connection.
How many channels does the mosaic-X5 have?
448 hardware channels — enough to track all constellations and bands concurrently without trading satellites on one band to watch another.
Can the mosaic-X5 track BeiDou B3I?
Yes. B3I (1268.52 MHz) is in the signal list alongside B1I, B1C, B2I, B2a and B2b — important for Asia-Pacific operations where BeiDou availability is highest.
Does the mosaic-X5 track all bands at the same time?
Yes. The 448-channel engine processes L1, L2, L5, E6, B3 and L-band concurrently, enabling sub-second RTK convergence and effective multi-band anti-jamming.
Choosing a receiver comes down to which bands you can rely on in the field. The mosaic-X5 answers with the full civilian spectrum in one module, and Eview builds it into rugged receivers and OEM boards ready for your platform. Explore the mosaic-X5 integration guide for specifications and ordering options.
