TEKNIK ELEKTRONIKA

The "Project Generator" issue of Elektor features a construction project for a world radio receiver using a digital signal processor (DSP). The DSP radio has a USB interface for connection to a PC, which enables the radio to be configured and controlled from the PC if desired and use the PC speakers for audio output, as well as drawing power from the USB port. The unit can receive and demodulate FM signals in the FM broadcast band and AM signals over a frequency range of 153 kHz to 21.85 MHz.

Many radio amateurs use two receivers in practice: one portable and the other fixed, with PC control capability. The Elektor DSP radio can operate in either capacity. To support stand-alone portable operation with power provided by a 6 V battery, the circuit also includes an audio amplifier for mono or stereo output. A backlit 2 x 16 LCD module provides the user interface.
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