OPTIONS ARE FACTORY INSTALLED AND WILL
TAKE 4-6 WEEKS FOR DELIVERY.
With the standard G305 receiver, the FMW mode
button is disabled and the wide FM demodulation mode is not available. This is
because wide FM demodulation is not possible to be provided as part of the G305
software-defined radio system, within the constraints imposed by the processing
power of a standard personal computer.
However, wide-band FM demodulation capability is available as a factory-installed option. This 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. In the Professional Demodulator there is a user-definable audio filter, displayed superimposed over the audio spectrum and graphically adjustable.
The Wide-FM Option provides a separate wide-FM demodulator. The wide-FM demodulation is performed in hardware, using conventional hardware-based demodulation techniques, in order to ease the requirement of PC processing power which would otherwise be required for a signal of this bandwidth. In other words, the Wide-FM Option is an entirely separate receiver on its own right.
Professional Demodulator with Wide-FM option activated.
