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LGT-92 LoRa GPS Tracker User Manual
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6.
FAQ
6.1
What is the lifetime for battery?
It is hard to get an exact lifetime for the battery, the actually lifetime for battery depends on the
battery type, GPS signal strength, upload periodically, use environment (indoor/outdoor). For
example, if the lgt-92 is placed in indoor environment, it will take 150 seconds to try to get GPS
fix and final it will fix fail. If the lgt-92 is placed outdoor, it will normally take less than 10 seconds
after the first fix. The power consumption and battery life are quite different.
A reference lifetime of a full charge battery on LGT-92-LI: If lgt-92 is placed outdoor, and
transmission periodically is 5 minutes. The device can last about 19 days. Please note this is an
ideal case on the GPS signal strength. Actually battery use time is affected by many factors as
mention above
6.2
Why there is 433/868/915 version?
Different country has different rules for the ISM band for using the LoRa. Although the LoRa chip
can support a wide range of Frequency, we provide different version for best tune in the LoRa
part. That is why we provide different version of LoRa.
6.3
What is the frequency range of LT LoRa part?
Different LT version supports different frequency range, below is the table for the working
frequency and recommend bands for each model :
Version
LoRa IC
Working Frequency
Best Tune
Frequency
Recommend Bands
433
SX1278
Band2(LF): 410 ~525 Mhz
433Mhz
CN470/EU433
868
SX1276
Band1(HF):862~1020 Mhz
868Mhz
EU868
915
SX1276
Band1(HF):862 ~1020 Mhz
915Mhz
AS923/AU915/
KR920/US915
