Adding the L5 band costs a little more — but it changes how your device behaves in the city. Understand the trade-off.

What the bands actually are

GNSS satellites broadcast on multiple frequencies. Consumer devices have long used just L1 — cheap and good enough in open sky. Modern dual-band modules also receive L5, a more modern signal designed for safety-critical aviation. Receiving two frequencies lets the receiver measure and cancel the ionosphere’s delay instead of guessing at it.

Where dual-band actually helps

The headline number moves from ~1.5 m (single-band) to ~1.0 m CEP (dual-band). But the bigger change is multipath resistance: in urban canyons, reflected signals bounce off buildings and corrupt the fix. Dual-band receivers separate the direct signal from reflections far more effectively, so the position stays stable instead of jumping.

Single-Band (L1)Dual-Band (L1/L5)
Accuracy~1.5 m CEP~1.0 m CEP
Urban multipathModerateStrongly reduced
CostLowerSlightly higher
PowerLowerHigher
Best forAsset tracking, fleetSmart mobility, urban devices

When single-band is still the right call

If your tracker spends most of its life in open areas — shipping containers, rural equipment, long-haul fleet — single-band is the economically rational choice: lower BOM cost and lower power, with plenty of accuracy for the use case. Don’t pay for L5 you won’t benefit from.

When to step up to dual-band

  • Devices that operate mostly in dense cities
  • Lane-level or sub-meter positioning requirements
  • Applications where a “jumping” trace is unacceptable
  • Shared-mobility and micro-mobility platforms

The decision is really “where will this device live?” We help customers make exactly this call — compare the modules or ask for a recommendation.

Dual-BandL1/L5Accuracy