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Mapper since:
April 18, 2012
Last map edit:
July 17, 2024

Started surveying with a Bluetooth GNSS receiver: Navilock BT-821G then a BN-808 usb receiver

Nowadays you may check this GPSTest Database

It was created by Sean Barbeau (thank you!) and allows everyone to check for GNSS capabilities for your future smartphone. You can check which smartphones support Dual-frequency GNSS, SBAS and many more details.

Dual-frequency GNSS is much more accurate than single frequency.

Second account dedicated to french building cadastre import is “JFKimports”.