Electronics fundamentals Raspberry Pi für Funkamateure Sensors Dogan Ibrahim
Although many radio amateurs still work with classic RF and mobile communications equipment, the use of computers and digital technologies is now very popular. Nowadays, everyone can buy a Raspberry Pi computer for around â¬40 and run almost any amateur radio software on the RPi.The RTL SDR devices are very popular with radio amateurs because they are very inexpensive and offer many functions. A base system can consist of a USB-based RTL SDR dongle with an appropriate antenna, an RPi computer, a USB-based external audio input/output adapter, and software installed on the RPi. With such a simple setup, it is possible to receive signals from about 24 MHz to over 1.7 GHz.This book is intended for radio amateurs who want to learn how to build electronic projects with the Raspberry Pi. The book is suitable for the entire range from beginners to old hares in amateur radio. The step-by-step installation of the operating system is described with many details about the most common Linux commands. Some knowledge of the Python programming language is required to understand and edit the projects described in the book. Examples of the projects developed in the book include a station clock, a signal generator, the design of a transistor amplifier, the design of an active filter, a Morse-sign exercise device, a frequency counter, an HF meter and much more. For each project, the block diagram, the circuit diagram and the complete Python source code are specified, including the complete description of the projects.In addition to the comprehensive treatment of RTL-SDR for amateur radio, the book also summarizes the installation and operating instructions of the following amateur radio programs that you can run on your Raspberry Pi: TWCLOCK, KLOG, Gpredict, FLDIGI, DIRE Wolf, Xcwcp, QSSTV, LinPsk, Ham Clock, CHIRP, Xastir and CQRLOG.Contents of the RTL-SDR Kit RTL-SDR Blog Brand R820T2 RTL2832U 1ppm TCXO SMA V3 Dongle Dipole antenna base with 60 cm RG174 extension cable 2x 23 cm to 1 m telescopic antenna 2x 5 cm to 13 cm telescopic antenna 3 meter RG174 extension cable Flexible stand holder Suction cup mountRTL-SDR is an affordable dongle that can be used as a computer-based radio scanner to receive live radio signals in your environment. This special dongle includes a R820T2 tuner, a temperature compensated oscillator (TCXO) with 1 PPM and an SMA-F connector. It has an aluminum casing with passive cooling via a heat conductive pad. In addition, there is a software-switchable bias-tea circuit, an additional ESD protection, a lower total noise and a built-in direct scanning for the HF-reception. The device can receive frequencies from 500 kHz to 1.7 GHz and has a current bandwidth of up to 3.2 MHz (2.4 MHz stable).Note: RTL-SDR dongles are RX only.You can use this kit for either terrestrial or satellite reception by simply changing the orientation of the antenna. Thanks to the included brackets and extension cables, it is possible to temporarily set up the antenna outdoors in order to ensure a better reception. Other possible applications include general radio scanning, air traffic control, public safety radio, ADSB, ACARS, Bundle Radio, P25 Digital Voice, POCSAG, Weather Balloon, APRS, NOAA APT weather satellites, radio astronomy, meteorite scattering, etc.This text is machine translated.