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GPS Ultra

GPS Ultra. Precision without touching the car.

A high-precision GPS receiver dedicated to Rallymeter. It connects over Bluetooth, needs no wheel sensors or cables, and gives automatic references the precision a phone’s GPS simply can’t.

Reference Phone GPS · 1 fix/s GPS Ultra · 10 fixes/s
10 Hz
positions per second, ten times the usual rate of a phone’s GPS
4
satellite networks at once: GPS, Galileo, GLONASS and BeiDou
~1.5 m
typical position accuracy under open sky
0.05 m/s
speed accuracy, the basis of the distance calculation

Why a dedicated GPS

A phone’s GPS is built for city navigation, not regularity: few updates, a tiny antenna and filtering that smooths the track. GPS Ultra is built to measure.

Sharper automatic references

With ten positions per second, the app detects each reference with far less uncertainty — both when capturing them in the recce and when correcting distance in the race.

Distance from Doppler speed

Distance is integrated inside the unit from satellite-measured speed, not by jumping between positions. The result: less noise and a stable distance even at low speed.

More satellites, fewer gaps

Four constellations at once mean more satellites in view in valleys, forests and mountain roads, exactly where a phone’s GPS degrades.

Set up in minutes

No sensors, no magnets, no cables to the wheel. Ideal if you want precision with maximum simplicity, or often change cars.

Two ways to run it

Start with GPS only. Want more? Add wheel sensors to the same unit.

Simplicity and precision

GPS Ultra

  • Just the GPS unit, no mechanical install
  • Distance and automatic references from high-rate GPS
  • Perfect for RS, recces and rallies with a published route
Maximum precision

GPS Ultra + sensors

  • One or two wheel sensors plugged into the same unit
  • Choose sensor 1, sensor 2, the average or GPS as distance source
Wheel sensor 1 Wheel sensor 2 GPS Ultra Co-driver Driver optional optional 10 Hz · 4 constellations Rallymeter Ultra app Display mirror Bluetooth LE GPS · Galileo · GLONASS · BeiDou

At a glance

  • ReceiverHigh-precision, multi-constellation GPS
  • ConstellationsGPS, Galileo, GLONASS and BeiDou concurrently
  • Update rate10 positions per second
  • DistanceIntegrated in the unit from Doppler speed
  • LinkBluetooth LE to the Rallymeter Ultra app (iOS and Android)
  • Wheel sensorsOptional, one or two
  • DiagnosticsSatellites, fix quality and live data in the app
  • AvailabilityComing soon

Compatibility

GPS Ultra does not force you to change anything.

  • Current blackBox: Rallymeter Ultra also works with the blackBox and its Pepperl+Fuchs sensors.
  • Other Bluetooth odometers: single or dual sensor, or a manually defined format.
  • Signal inspector: shows raw packets and lets you map which data belongs to each sensor.
  • No hardware: the app also runs on the phone’s own GPS.

Calibration

Per-sensor calibration wizard, a global calibration multiplier, and the end-of-stage history to fine-tune with real data.

Want to try Ultra first?

We are preparing the beta for iOS and Android. Drop us a line and we will let you know.

Join the beta