# HDSDR v2.81 Keyboard Shortcuts

Function Groups
Main |
GUI |
Mode |
Frequency |
Audio |
DSP |
CW |
DigiMode |
ExtIO |
Wave file |
Lab |
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

- Input dialog requests save interval in ms
- Positive value starts periodic saving
- '0' stops periodic saving. Then you can rename the saved CSV file

Smoothing is always applied - see S-Meter Calibration (F7 + C + S)
Power values are probed every ~16 ms for avg/min/max in CSV

Insert