User's Manual
Table Of Contents
- Table of Contents
- Introduction
- The Hardware
- Installation
- Getting Started
- Inside the Excelsior
- Resizing the Application Window
- Drop-Down Menu Controls
- Tuning the Excelsior
- Receiver Selection
- Mode Selection
- Function Tabs
- Spectrum Scopes
- Recording Functions
- Attenuator
- Preamplifier
- S-meter
- Top Menu Bar
- File
- Options
- Auto-mute RX not in focus
- Enable second RX
- Filter Length
- Front Panel LED
- Display Offset
- Time
- Keyboard Shortcuts
- VSC Set-up
- Audio Buffering
- AMS Capture Range
- Audio Output
- Show Measurements
- Show Data Rates
- Of particular interest to many users will be the CPU load (excessive CPU load may cause sluggish behaviour or freezing of the computer), and Audio latency. Apart from DDC bandwidth, CPU load may be minimized by reducing the Demodulator filter length (...
- Note: When measuring sensitivity using SINAD, it is very important that the Audio Filter is enabled and the cut-off frequencies (and for FM measurements, also the de-emphasis) are set according to the specified test conditions. Proper audio filtering ...
- Show Waterfall Timestamps
- Calibration
- Hand-Off Receiver
- Color scheme
- Restore factory defaults
- Memory
- Scheduler
- Scanner
- Logger
- Plugins
- Power Switch
- Date and Time Display
- Appendix A – SDR and DDC Primer
- Appendix B – Troubleshooting
- Appendix C – USB Interface Diagnostics
- Appendix D – Dealing with Interference
- Appendix E – G39DDCi PCIe Card Connections
- Appendix F – Waterfall Spectrum Palettes
- Appendix G – Recording File Formats
- Appendix H – Compliance Declarations
- Appendix I – Safety Disposal
WiNRADiO G39DDC User’s Guide
39
AM
Amplitude Modulation
AMS
Amplitude Modulation (Synchronous Demodulation)
LSB
Lower Side Band
USB
Upper Side Band
ISB
Independent Side Bands
DSB
Dual Side Bands
CW
Continuous Wave (Morse Code)
FM
Narrow-Band Frequency Modulation
FMW
Wide-Band Frequency Modulation
DRM
“Digital Radio Mondiale” (HF Digital Radio)
FSK
Frequency Shift Keying
UDM
User Definable Mode
In addition to the standard AM, LSB, USB, CW and FM modes, the Excelsior
receiver is equipped with several special modes, AMS, ISB, DSB, DRM, FSK
and UDM:
AMS Mode
The AMS mode is used to improve reception quality of amplitude-modulated
signals, especially those affected by selective fading which occurs over a large
distance.
When the AMS mode is selected, special controls appear under the tuning tab,
making it possible to select one (or both) of the signal’s sidebands to achieve
optimum reception: