ATOM UAV MANUAL
Date: 2021-09-30
Version: 0.8
Page: 13 of 20
FLARM Technology Ltd
Hinterbergstrasse 15
CH-6330 Cham
Document Number:
FTD-088
3.5
Radio diversity
Atom UAV can only be connected to one antenna. However, multiple antennas
might sometimes be required to ensure sufficient radio coverage. With Atom UAV,
it is possible to use two devices to provide this radio diversity. Both devices will
emit the same ID (and thus be seens as one aircraft by other receivers) and ignore
each other.
When using multiple devices, one will be the primary radio and the other one the
secondary radio. The secondary radio, once configured, will emit the ID of the
primary device.
This can be configured on the Web Interface under “Configuration”, “FLARM”,
“Radio Diversity”.
To use the device standalone, that is not as part of a primary/secondary setup,
choose the “No diversity” option. This is the default.
Both the primary and secondary device need to be configured. The primary device
is to be configured as “Primary”. This is important, otherwise the secondary device
will NOT be ignored, which will lead the primary device to switch its ID to avoid
duplicate IDs, resulting in multiple targets for other aircraft.
The secondary device need to be configured as “Secondary” and to have the
reference to the primary device set, to allow emitting the correct ID. This reference
is the serial number of the primary device, as can be found on the sticker on the
device or in the Web Interface, on the “Status” page, under “System”, “Device ID”.
Make sure not to use the “Radio ID”. For instance, for the device “FLATMUAWW-
000042”, the serial number to use is “000042” or simply “42”.