Quectel BG951 – NB-IoT, LTE-M, GNSS module The Quectel BG951 is based on Altair Semiconductor. The eDRX (extended Discontinuous Reception)/PSM (Power Saving Mode) ensures low power consumption. With a super-low current consumption of approximately 1,5 uA in PSM mode, the Quectel BG951 offers a long operating life of 10 to 15 years on a single […]
Quectel BG770 – NB-IoT, LTE-M, GNSS module
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 […]
PCB-F-antenna for NB-IoT, LTE-M and GSM
Q: Thanks for all the materials you shared. I am reading the cookbook but I can only find some guidelines so build a GSM IFA antenna. A: Can you please share with me the exact dimensions you used in your simulation? Q: As I previously mentioned, I just bought your book to copy-paste your antenna […]
In which frequency bands will LTE-M and NB-IoT operate in DACH?
NB-IoT / LTEM / LoRaWAN design question – CoAP, MQTT, MQTT-SN?
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?
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
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 […]
NB-IoT for smart bin / intellegent container
Enquiry for a smart waste container We have already developed many antennas for metal containers on GSM, UMTS, NB-IoT, LTE-M, LoRaWAN and Sigfox. For us the radio technology does not make a big difference. The akorIoT SensPRO is already a reference design for such a smart bin. Request for the smart waste bin Hi Harald, […]
Which protocol should I use for my NB-IoT / LTE-M Tracker?
Which is better: UDP, TCP, MQTT, CoaP or LWM2M? Q: Our application is an asset tracker on NB-IoT, LTE-M, GPRS and GNSS. We need to send the current position of the tracking device to a remote server after a particular interval. I am looking for the LWM2M protocol which consumes less energy & headers added […]
Simulation of NB-IoT coverage in Kirchheim
The grey map with the blue triangles shows the cellular base stations in the Kirchheim area. This map is available online from the Federal Network Agency in Germany. In Germany the locations of the cellular base stations are publicly accessible for everybody. The base stations vary in height from about 5 m up to 48 […]