User's Manual
Table Of Contents
- WiNRADiO
- G3 Series Radio Receiver
- Introduction
- Installation
- Getting Started
- Connecting the Antenna
- Using WiNRADiO G3 SERIES
- Appendix A - Troubleshooting
- Appendix B – Sound Card Controls
- Appendix C - Dealing with Interference
- Appendix D - Inside WR-G3 SERIES
- Appendix E – Professional Demodulator
- Appendix F - Developer Support
- Declaration of Conformity
- 55 -
USB Demodulator Structure
The CW received signals are first down-converted to zero Hz, and then,
after additional channel filtering, up-converted to a convenient audio
frequency. This frequency (a
digital BFO
) is user-adjustable, by changing
the value of the
CW tone frequency
parameter in the demodulator set-up.
CW Demodulator Structure
Finally, all frequency demodulators have the same block diagram. The only
differences between these demodulators are the bandwidth values of the
input IF filter and the two post-mixer filters:
FM Demodulator Structure