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Software-defined radio (SDR) is a radio communication system where components that conventionally have been implemented in analog hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a computer or embedded system. [1]
It is built around a modular concept which encourages experimentation with new techniques and devices (e.g. SDR, Envelope Elimination and Restoration) without the need to replace the entire set of boards. The project has expanded from the original group, and several additional people have been involved in recent HPSDR module designs.
AFEDRI SDR [17] Pre-built Active 30 kHz – 35 MHz, 35 MHz – 1700 MHz 2.3 MHz 12 No 80 MSPS 0/2 USB 2.0, 10/100 Ethernet Yes Yes Yes AirSpy R2 [18] Pre-built Active 24 – 1700 MHz 10 MHz 12 N/A No 10 MSPS MSps ADC sampling, up to 80 MSPS for custom applications 0.5 0/1 USB Yes Yes Yes using ports none AirspyHF+ [19] Pre-built Active
The baudline time-frequency browser is a signal analysis tool designed for scientific visualization.It runs on several Unix-like operating systems under the X Window System. ...
Linux, MacOS and Windows QSO logger for Emacs with a customizable dynamic form for rapid data entry into an ADIF file. Suitable for general logging or contesting, it can be customized to use almost any combination of fields in the ADIF 3.1.4 specification.
GNU Radio is a free software development toolkit that provides signal processing blocks to implement software-defined radios and signal processing systems. It can be used with external radio frequency (RF) hardware to create software-defined radios, or without hardware in a simulation-like environment.
Single data rate SDRAM has a single 10-bit programmable mode register. Later double-data-rate SDRAM standards add additional mode registers, addressed using the bank address pins. For SDR SDRAM, the bank address pins and address lines A10 and above are ignored, but should be zero during a mode register write.
Upon the release of Windows 10 in 2015, the ARM-specific version for large tablets was discontinued; large tablets (such as the Surface Pro 4) were only released with x86 processors and could run the full version of Windows 10. Windows 10 Mobile had the ability to be installed on smaller tablets (up to nine inches); [16] however, very few such ...