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 […]
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 […]
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 […]
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 […]
Field test: tracking indoor and outdoor In order to demonstrate the tracking goods and assets across borders, a field test was executed over several days in different countries and 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 park […]
Everybody talks about protecting the 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. […]
From time to time developers ask questions about the content of the IoT M2M Cookbook. This time the question involves 5G and I explain why I’m not currently writing on this subject. Question about the IoT M2M Cookbook Hello Harald, I’d like to buy the IoT Cookbook. Are new networks like NB-IOT and LTE-CAT-M covered? […]
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 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 […]
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 […]
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