For instance, you can add an AIS Low Noise Amplifier and a bandpass filter to the front-end of an AIS receiver and increase the range significantly. Taking it one step further, you can develop an understanding of how these modules work and optimize them to increase the range. With this you can receive everything from FM broadcast to ADS-B to Hydrogen Line signals. You can get an RTL-SDR which is pretty much the Arduino of the SDR world. Today you can buy a couple of wireless modules for cheap and get them working in no time with an Arduino. Not only are Ham radio licenses on the rise, but people are working with software-defined radios, IoT and low power wireless systems in unlicensed bands. More and more people are also experimenting with RF and wireless. The rapid evolution of wireless systems such as Wi-Fi, Bluetooth, LoRA, 5G and others is an indication that our appetite for wireless data and communications is not slowing down. From voice communications in the nineties to data, more data and a crazy amount of data over the past two decades – now wireless is everywhere. In the last decade we have seen exponential growth in radio communications.
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