GPS receiver
Bad Elf Flex Mini
GNSS receiver; the maker quotes 1.5 to 2 m in SBAS regions
What it sends
- Its position to the iPhone's Location Services, which SpeleoMap reads.
- The entrance fix records that it came from the receiver.
Setup
- Pair it in iOS Settings, Bluetooth, then in SpeleoMap, Settings, Devices, turn on GPS Receiver and tap Check receiver outside. The source shows as EXTERNAL GPS
- Bad Elf says it works with all location-aware iPhone apps.
Any receiver that feeds the iPhone's Location Services works: SpeleoMap reads location the way every iPhone app does. Some receivers only work inside their maker's app, so check before you buy.