| Function Groups | |
| Main Functions | Keyboard Shortcut |
| Help / Info / Update check | F1 |
| Start/Stop HDSDR | F2 |
| Minimize HDSDR | F3 |
| Exit HDSDR | F4 |
| Exit HDSDR without saving settings | Ctrl + F4 |
| Open sound card selection dialog | F5 |
| Open sampling rate dialog | F6 |
| Open Options menu | F7 |
| Open 'RF frond-end frequency options' | F7 + R |
| Open 'Calibration Panel' | F7 + C |
| Open 'Recording Settings and Scheduler' | F7 + E |
| Open 'DDE to HDSDR' options | F7 + D |
| Save HDSDR Settings | F10 |
| Full Screen | F11 |
| Boss Key: Pause Wave, Mute & Minimize | Pause |
| Switch between RX and TX | Space |
| GUI Functions | Keyboard Shortcut |
| Swap position of Waterfall/Spectrum | S |
| Swap position of RF/AF Display | Ctrl + S |
| Collapse Mode (only upper Display) | Shift + C |
| Compact Mode (without RF + AF Display) | Shift + X |
| Save HDSDR screen to image file (Screenshot) | Ctrl + W |
| Save current RF Waterfall to image file | Ctrl + Shift + W |
| Save current AF Waterfall to image file | Ctrl + Shift + X |
| Save independent RF/AF Waterfall to image file | Ctrl + Shift + Y |
| (Re)Load Custom Color Palette | Ctrl + X |
| Zoom RF Spectrum | Ctrl + '+' |
| UnZoom RF Spectrum | Ctrl + '–' |
| Zoom to bandwidth in kHz | Ctrl + Z |
| Reset RF Spectrum Zoom to full bandwidth | Ctrl + 0 |
| Increase RF FFT Resolution Bandwidth (RBW) | Ctrl + '×' (*) |
| Decrease RF FFT Resolution Bandwidth (RBW) | Ctrl + '÷' |
| Zoom AF Spectrum | Shift + '+' |
| UnZoom AF Spectrum | Shift + '–' |
| Reset AF Spectrum Zoom to full bandwidth | Shift + 0 |
| Increase AF FFT Resolution Bandwidth (RBW) | Shift + '×' |
| Decrease AF FFT Resolution Bandwidth (RBW) | Shift + '÷' |
| Speed divider between RF Spectrum and Waterfall | Ctrl + Shift + 'L' |
| Speed divider between AF Spectrum and Waterfall | Ctrl + Shift + 'O' |
| Mode Functions | Keyboard Shortcut |
| Switch Mode to AM | Ctrl + A |
| Switch Mode to CW | Ctrl + C |
| Switch Mode to DIG | Ctrl + D |
| Switch Mode to ECSS | Ctrl + E |
| Switch Mode to FM | Ctrl + F |
| Switch Mode to LSB | Ctrl + L |
| Switch Mode to USB | Ctrl + U |
| Set AFC carrier inactive duration - after (frequency/mode) changes | Ctrl + Shift + F |
| Set AFC carrier search range for AM/ECSS modes | Shift + A |
| Change Mode Bandwidth | W |
| Frequency Functions | Keyboard Shortcut |
| Fast frequency input | 1 - 9 |
| Enter new Quick Tune frequency (auto LO) | Ctrl + Q or Q |
| Enter new LO frequency | Ctrl + O or L |
| Enter new Tune frequency | Ctrl + T or T |
| Set LO frequency on tuned frequency (to be considered LO<->Tune Offset) | C |
| Lock/Unlock LO Frequency | Shift + Y |
| Lock/Unlock Tune Frequency | Shift + T |
| Switch between LO A and B | Ctrl + V |
| Frequency Manager + Bands | Ctrl + B |
| Increase LO frequency by visible spectrum bandwidth | Ctrl + PageUp |
| Decrease LO frequency by visible spectrum bandwidth | Ctrl + PageDown |
| Select frequency Band | Ctrl + End |
| Select frequency Step | Ctrl + Home or Menu |
| Increase Tune frequency by Step | Ctrl + Up |
| Decrease Tune frequency by Step | Ctrl + Down |
| Increase LO frequency by Step | Ctrl + Right |
| Decrease LO frequency by Step | Ctrl + Left |
| Audio Functions | Keyboard Shortcut |
| Enter new Locut frequency | Shift + L |
| Enter new Hicut frequency | Shift + H |
| Increase Locut frequency | Shift + Up |
| Decrease Locut frequency | Shift + Down |
| Increase Hicut frequency | Shift + Right |
| Decrease Hicut frequency | Shift + Left |
| Change Mode Bandwidth | W |
| Mute on/off | M |
| Volume | '+' / '–' |
| Lock/Unlock Gain (AGC-off) | Shift + G |
| Change Squelch value | Ctrl + Shift + PageUp/PageDown |
| (temporary) disable/enable Squelch | Ctrl + Shift + Q |
| DSP Functions | Keyboard Shortcut |
| NB – Noise Blanker RF | B |
| NB – Noise Blanker IF | I |
| NR – Noise Reduction | R |
| select Additive Noise Generator | Ctrl + N |
| Increase NR, NB_RF, NB_IF, CWpeak, RF gain, IF gain, FM BandWidth,... | Ctrl + P |
| Decrease NR, NB_RF, NB_IF, CWpeak, RF gain, IF gain, FM BandWidth,... | Ctrl + M |
| AGC (fast/mid/slow/off) | G |
| change Gain / AGC-Threshold fast | Ctrl + Shift + '×' / '÷' |
| change Gain / AGC-Threshold slow | '×' / '÷' |
| AFC - Automatic Frequency Control | F |
| Set AFC carrier search range for AM/ECSS modes | Shift + A |
| Set AFC carrier inactive duration - after (frequency/mode) changes | Ctrl + Shift + A |
| Manual Notch Filter (Beat Cancel) | N |
| Automatic Notch Filter (Auto Beat Cancel) | A |
| CW Functions | Keyboard Shortcut |
| CW ZAP | Z |
| CW Peak | P |
| CW Despreading | D |
| Change CW Pitch frequency | Shift + Z |
| TX mode: Switch CW carrier tone on/off | Return |
| DigiMode Functions | Keyboard Shortcut |
| select I/Q Gain (I/Q output only) | Ctrl + G |
| Disable Audio LoCut (=Highpass Filter) for AM/FM (useful for slow digimodes) | Ctrl + H |
| FM Binary Discriminator (not for listening!) | Shift + D |
| ExtIO Functions | Keyboard Shortcut |
| select RF Gain (ExtIO support required) | Ctrl + R |
| select IF Gain (ExtIO support required) | Ctrl + I |
| Show GUI of ExtIO-DLL (ExtIO support required) | H or F8 |
| Wave File Functions | Keyboard Shortcut |
| Rewind WAV file | Shift + W or Shift + Home |
| Jump to next WAV file (Multipart WAV file only) | Shift + F or Shift + End |
| Switch WAV file looping | Shift + O |
| Record WAV file when AGC off, Gain locked and NR off, then AF filename contains strength of full scale level |
Shift + R |
| Play WAV file | Shift + P |
| Stop Playback/Recording | Shift + S |
| Pause Playback/Recording | Shift + B or Space |
| Change WAV step size | Shift + K |
| Increase WAV file position by 'step size' | Shift + PageUp |
| Decrease WAV file position by 'step size' | Shift + PageDown |
| Fast WAV file demodulation & recording - from one wave file into another file - at maximum speed. Sound output is deactivated. |
Ctrl + Shift + F |
| Lab Functions | Keyboard Shortcut |
| switch TX tone generator mode 1 tone: amplitude 0.1, 0.5, 1.0 2 tones: amplitude 0.1 /2, 0.5 /2, 1.0 /2 3 tones: amplitude 0.1 /3, 0.5 /3, 1.0 /3 Default tones frequencies: 700 Hz, 1700 Hz, 2300 Hz |
Ctrl + Shift + G |
| FM Binary Discriminator (not for listening!) | Shift + D |
| Change AF Spectrum Type | K |
| Change RF Spectrum Type | J |
| Change Spectrum Reference Bandwidth (PSD only) | Ctrl + J |
| Set Spectrum Reference Bandwidth to RBW (PSD only) | Shift + J |
| Switch S-Meter and RF Spectrum compensation: off: without '= ' prepended to strength value (=default) on: with '= ' prepended to strength value, compensates strength value for RF/IF gain and attenuation - when known |
Ctrl + Shift + J |
| Switch S-Meter mode: RMS / Peak | Alt + Insert |
| Switch S-Meter display mode: S-units / dBm | Shift + M |
| Single-Shot write S-Meter level to CSV Input dialog requests comment to save in file, e.g. signal generator level |
Ctrl + Shift + Insert |
| Minimum Power averaging in ms for CSV | Ctrl + Insert |
| AutoSave S-meter level to CSV on Level-Change | Shift + Insert |
AutoSave S-meter level to CSV periodically
Power values are probed every ~16 ms for avg/min/max in CSV |
Insert |