“The radio presented above is capable of receiving the entire spectrum, from 500 kHz to 2 Gigahertz.
Software-defined radio (SDR) is a radio communication system where components that have been traditionally implemented in hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a personal computer or embedded system.
The radio presented in the video above is capable of receiving the entire spectrum, from 500 kHz to 2 Gigahertz. It can decode all digital and analog radio signals. Also contains a tuning knob for easier frequency dialing. The device consists of several parts:
The heart of the device is Raspberry Pi 3 model B + board, And RTL SDR dongle
Rotary encoder with control board (The control board is actually a USB mouse on which the original rotary encoder has been replaced by a larger robust encoder)
7 Inch Touch Panel Display with resolution of 1024 on 600 pixels
Small D-Class Audio amplifier board
Speaker
small fan for cooling Raspberry Pi CPU
Power supply connector
and BNC Antenna jack”