Data Sheet

25
3.4 Modem
- Modem is the central controller of the system. It must always be
powered when the Navigation System is working. It is recommended
to use an active USB hub for that purpose or even a regular cellular
phone USB power supply. A USB power bank can also be used
- The modem is also used to set up the system, monitor it, and interact
with the Dashboard
- It can be placed anywhere within radio coverage for permanent radio
connection with all beacons—usually in the radius of up to 100 meters
with antennas from the Starter Set
- Radio coverage further extended to a few hundred meters by using a
lower bitrate of 38kbps and full-size (165mm for a 433MHz band)
antennas, which have been tested to provide up to 400m in ideal
conditions
- There are 433MHz and 915MHz versions available
- A proprietary radio protocol used for communication and synchronization
between modem and beacons
Fig.1: HW v4.9 Modem