IoT M2M blog

The home of free hints and tips about wireless IoT / M2M

Quectel BG770 – NB-IoT, LTE-M, GNSS module

Quectel BG770

Quectel BG770 – NB-IoT, LTE-M, GNSS module The Quectel BG770 is based on the Altair Semiconductor ALT1250. The eDRX (extended Discontinuous Reception)/PSM (Power Saving Mode) ensures low power consumption. With a super-low current consumption of approximately 3 uA in PSM mode, the Quectel BG770 offers a long operating life of 10 to 15 years on […]

In which frequency bands will LTE-M and NB-IoT operate in DACH?

NB-IoT LTE-M frequency bands

Q: I have a question before I start my development. I seem to remember that you mentioned in an email that we need more bands for LTE-M. Are frequency band 8 and 20 not enough? The answer about frequency bands for LTE-M and NB-IoT in DACH A: The question about frequency bands for LTE-M / […]

NB-IoT / LTEM /  LoRaWAN design question – CoAP, MQTT, MQTT-SN?

TCP, UDP, MQTT, MQTT-SN, CoAP, LWM2M, HTTP

I get questions about LPWAN designs each week. The question below I will answer online, because it is a generic question. NB-IoT / LTEM /  LoRaWAN design question: Hi Harald, We’ve been in contact a few times a few years ago now (!), discussing low power wireless and RF topics. Great to see how much […]

Which LPWAN do you use for an emergency call button?  

LPWAN-Emergency-Button

First of all, we have to establish whether the mobile emergency call button is to be used locally in a building, on a company campus, or nationwide in a European or a non-European country. In this article, we will first limit the mobile emergency button to use in Germany. The design for Germany can easily […]

Tracking indoor and outdoor by GNSS and cell ID

Tracking test: Main trip to Amsterdam

Field test: tracking indoor and outdoor In order to demonstrate the tracking of goods and assets across borders, a field test was executed over several days in different countries using different methods of transport. In addition to delivery vehicles and cars, trams and walking were also used. The car was parked in an underground car […]

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