The WiNRADiO WR-G315e is a software-defined high-performance VHF/UHF receiver (9 kHz to 1800 MHz, extendable to 8599 MHz using an optional Antenna Multiplexer and Frequenxy Extender) with a USB interface, an external version of the WR-G315i receiver.
This receiver is intended for government, military, security, surveillance, broadcast monitoring, industrial and demanding consumer applications.
The receiver offers an unparalleled flexibility given its SDR architecture, respectable dynamic range, and high sensitivity. Many useful features complement the receiver, making it capable of filling not only the role of a monitoring receiver but also that of a measuring receiver, such as the calibrated S-meter showing the received signal levels in dBm, µV or S-units, down to the ‑140 dBm noise floor, several spectrum analyzers, and many other features not usually found on receivers of this price.
The receiver connects to an IBM-compatible PC via the USB port. Several receivers can be controlled by a single PC to form a multi-channel HF receiver system.
The receiver has its own on-board DSP, and does not rely on the PC sound card for the signal input; the digitization is done in the receiver itself, using a high-performance analog-to-digital converter. As the DSP performs the final stage IF filtering and all demodulation, this receiver is entirely software-defined, which means that additional demodulation or decoding modes can be easily added by a mere software change. (For example, an optional DRM decoder/demodulator is also available.)
About the WFM Option
With the standard WR-G315e receiver, the FMW mode button is disabled and the wide FM demodulation mode is not available. This is because wide FM demodulation cannot be provided within the signal-processing constraints of the WR-G315e software-defined narrow-band receiver architecture.
However, wide-band FM demodulation capability is available as a factory-installed option. The wide-band FM demodulator option is in fact a self-contained “hardware-defined” receiver which shares only the main receiver’s front-end and first mixer, but has an independent wide-band analog processing circuit with a conventional “hardwired” demodulator.
If the Wide FM Option is installed, the FMW button becomes active. The demodulator spectrum display shows real-time spectrum of the demodulated audio. There is also a user-definable audio filter, displayed superimposed over the audio spectrum and graphically adjustable.