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 […]
A short digital Christmas novel
As Santa Claus will soon be bringing presents, let me tell you a seasonal tale of the energy and cost savings with SubGHz Mesh-Net crafted as a Christmassy challenge. Santa’s sledge moves around the world. His reindeer are changed several times during Christmas night. Each reindeer, all the elves and the toy factory at the […]
GSM / NB-IoT antenna and radio certification
Questions about radio certification will be answered in our LPWAN and BLE seminars. About 1/3 of the time we explain how to certify wireless IoT devices. The wireless part is only a small part which has to be tested according to RED. Question about certification and antenna Q: I have a question for you. It […]
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 […]
GNSS Antennas and Recycling
Everybody talks about protecting the environment and recycling. The nail antenna from the land of poets and thinkers (Germany) follows this trend. We’ve hit the nail on the head with this design. We don’t need a new nail – no we use old, superfluous, rusty nails and recycle them into valuable, perfect GNSS antennas. This […]