HyQuest Solutions IoTa LTE-M, Руководство пользователя

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Operation
4.4 Connecting an Antenna
IoTa is equipped with an SMA connector compatible with most LoRa and LTE-M antennas.
The SMA connector (Sub-Miniature Version A) is a radio-frequency coaxial connector with a screwing coupling feature.
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Female connector on the IoTa housing: The female connector has a threaded barrel.
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Male connector on the antenna or on the antenna cable: male SMA connectors have a hex nut that fits securely
around the female barrel for a tight coupling.
In most applications, an omnidirectional antenna will serve you best.
Choice of Antenna: In most applications, an omnidirectional antenna will serve you best. LoRa and LTE-M do not operate
in the same frequency bands. Use an antenna that is tuned to the appropriate frequency range. Depending on location
and network coverage, an amplifying antenna may be preferred. Caution: check with national regulations for the
maximum amplification allowed for the transmission. This may differ between LoRa and LTE-M.
IoTa SensorNode LoRa : LoRaWAN operates in ISM (Industrial, Scientific and Medical) band of the radio spectrum.
Subsequently, the permitted power levels are very low, typically only +14 dBm in Europe. This means that you will get
better results from using an antenna that is tuned to operate in the ISM spectrum. In Europe the LoRaWAN profile
operates in several channels close to 868 MHz.
IoTa SensorNode LoRa : LTE-M is a sub-band of the 4G or 5G. Usually, any antenna tuned to the frequency range of LTE
will do.
4.5 Data Transmission
This chapter contains the following subsections:
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LoRa
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LTE-M
4.5.1 LoRa
Network Coverage: Check network coverage for LoRa/LoRaWAN at the monitoring site.
The maximum number of values transmitted per message is 8.
These 8 values can be obtained from a single multi-parameter SDI-12 sensor. They may also be the sum of up to 7 SDI-12
values plus the counter value. In any case, the total number may never exceed 8.
4.5.2 LTE-M
Network Coverage: Check network coverage for LTE-M at the monitoring site.
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