Alpha 40 GNSS RTK receiver

Name: Alpha 40
Brand: Alpha

A surveying GPS with tilt compensation, a laser and a photo for every point, which sends the survey to QGIS in the office with the GeoMarco Sync app, with no subscription.

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Alpha 40 receiver on a carbon pole with the Android controller showing DiMap Pro

Four reasons for the Alpha 40 GNSS RTK receiver

Survey with a tilted pole

The problem

With the pole held vertical, building corners under eaves, the foot of an overgrown wall or a point next to a parked car are hard or impossible to measure.

The solution

Tilt compensation (IMU) corrects the position up to 60° of tilt, with no initialisation: just take a few steps. The surveyor measures without wasting time on the bubble.

Measure at a distance with the laser

The problem

The centreline of a busy road, the crest of an embankment or a boundary mark across a stream force the surveyor into dangerous or unreachable places.

The solution

The built-in laser, with a calibrated optical sight, measures points up to 50 m away without going there, with 3 to 5 cm at 10 m. The surveyor stays in a safe place.

A photo linked to every point

The problem

A list of coordinates with codes such as "TREE" or "MARK" does not show what was measured, and in a meeting with landowners a dot on a map is not very convincing.

The solution

The photo taken in DiMap Pro is linked to the point. In QGIS, clicking the point shows the photo, the precision and the FIXED or FLOAT status. The office gets the point and the image of the mark, manhole or wall it came from.

Field and office connected, no subscription

The problem

Many solutions charge a yearly fee to sync data between the field and the office.

The solution

The GeoMarco Sync app and the QGIS plugin are included with the Alpha 40, with no monthly fees and no per-user licences.

In the field

Surveyor in an olive grove measuring with a tilted pole while checking the controller — Tilted pole: measure without levelling the bubble.

Surveyor in the street measuring the foot of a façade 15 metres away with the laser — Laser: the foot of the façade at 15 m, without crossing the street.

Surveyor measuring a stone boundary mark across a stream, 10 metres away, with the laser — Laser: the boundary mark across the stream, at 10 m.

Illustrative images.