Technical data and API¶
Radio networks and connections¶
GPS satellite network¶
The device needs a clear view of the sky to detect the signals of the GPS systems (NavStar, Glonass, Galileo) in order to calculate its current position and receive the time stamp. The more satellites that are “seen” by the device, the more accurate the positioning. Under unfavourable reception conditions (canyons, under roofs, etc.) this can result in deviations of 100 metres or more. Immediately after the start of the device (usually in the first 2-5 minutes), the positioning is still inaccurate for technical reasons.
GSM and 4G / 5G networks¶
The A*LIVE has a built-in eSIM that can log into almost all GSM (2G/4G) networks worldwide. It automatically connects to the best available network at the respective location. In the 4G range, the new “NB-IoT” technology according to NB1 / M1 standard is used, which is currently being released by more and more countries. It will remain available even when upgrading to 5G.
Iridium Satellite Network¶
The unit requires a clear view of the sky to transmit messages and track points via the Iridium satellite network. Without a clear view of the sky, the unit will attempt to transmit data until it detects satellite signals.
Restrictions on reception or very delayed transmissions are to be expected in narrow mountain or house canyons or dense forests.
TIP: You will get the best satellite connection if you wear the device on your backpack (on top) or on your upper body. Limitations: Iridium technically works globally, pre-registration is required for Russia, satellite systems are generally prohibited in India. Other countries in which you should obtain up-to-date information before importing and using the device include: China, Cuba, Chad, Bangladesh, Myanmar, Libya, Nigeria, North Korea, Sri Lanka, Sudan (as of 2018).