IoT M2M blog

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

When pigeons tweet – birds in IoT

Pigeons wearing wireless pollution-monitoring devices will report back via Twitter

Pigeons don’t tweet, they make cooing noises. They don’t wear backpacks either. Usually. Well, say hello to the new breed of backpack wearing, tweeting pigeons that might just save lives.   If you live in a city there’s a good chance you’ll be sharing it most days with a large number of pigeons. And generally […]

400 students have already enrolled at the IoT-University

Direction in LPWAN

The IoT-University was launched just one month ago. In just four weeks there are more than 400 students on the course. Students want to learn and to educate them we need more mentors who love to share; we have space for eight more to join us. If you have something to share, join us. Become […]

LPWAN comparison – Weightless-P vers SIGFOX vers LoRa

Sigfox, Lora, Weightless P compared to each other

For comparison, the Hata Model was used. Hata is the most widely used radio frequency propagation model for predicting the behaviour of cellular transmissions in built up areas. Settings for the simulation on Hata model LPWAN Base Station Height = 30m End-Device Height = 0.5m Simulation results for LPWAN on Weightless P, LoRa and SIGFOX   If […]

Comparison of LPWAN like SIGFOX, LoRaWAN, Weightless P and NB-IoT/LTE-Cat-NB1 – Tuesday, March 14, 2017


Tuesday, March 14, 2017, I will compare LPWAN like SIGFOX, LoRaWAN, Weightless P and NB-IoT/LTE-Cat-NB1 at embedded world in Nuremberg. Tuesday, March 14, 2017, 09:30 – 12:30 Session 03/I Connectivity – Wireless Technologies I Program: 09:30 – 10:00 Comparison of LPWAN Like SIGFOX, LoRaWAN, Weightless P and NB-IoT/LTE-Cat-NB1 Harald Naumann, Tekmodul 10:00 – 10:30 […]

What is NB-IoT? Lesson 1

History of name for LTE-Cat-NB1 and LTE-Cat-M1

Fundamentally, there really is no such thing as “NB-IoT”. The correct term is “LTE-CAT-NB1”. This technology is sometimes confused with Cat-M, which is another misnomer. The correct name for “Cat-M” is LTE-Cat-M1. Both these technologies, LTE-Cat-NB1 and LTE-Cat-M1 are just subsets of “classic LTE” and are a part of the 3GPP Release 13 fixed in […]

Antennas tests – preparing a PCB for a device in the Internet of Things

Calibration of the VNA on PCB with embedded antenna

Calibration of the VNA on PCB with embedded antenna The calibration of the VNA (Vector Network Analyser)  for a PCB with embedded antenna is difficult. The final antenna with all components except the wireless module should be mounted inside the final enclosure. The wireless module will be replaced by the probe. The three calibrations of […]

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