# HDSDR Keyboard Shortcuts

Function | Keyboard Shortcut
Set LO frequency on tuned frequency (to be considered LO<->Tune Offset) | C
Enter new LO frequency | Ctrl+O or L
Enter new Tune frequency | Ctrl+T or T
Enter new Quick Tune frequency (auto LO) | Ctrl+Q or Q
Fast frequency input | 1 - 9
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 MouseWheelStep | Ctrl+Home or Menu
Increase Tune frequency by MouseWheelStep | Ctrl+Up
Decrease Tune frequency by MouseWheelStep | Ctrl+Down
Increase LO frequency by MouseWheelStep | Ctrl+Right
Decrease LO frequency by MouseWheelStep | Ctrl+Left
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
Switch Mode to AM | Ctrl+A
Switch Mode to CW | Ctrl+C
Switch Mode to DRM | 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
NB – Noise Blanker RF | B
NB – Noise Blanker IF | I
NR – Noise Reduction | R
Manual Notch Filter (Beat Cancel) | N
Automatic Notch Filter (Auto Beat Cancel) | A
AGC (fast/mid/slow/off) | G
Mute on/off | M
Volume | +/-
Swap position of Waterfall/Spectrum | S
Swap position of RF/AF Display | Ctrl+S
Save current RF Waterfall to image file (in WAV recording directory) | Ctrl+W
Collapse Mode (only upper Display) | Shift+C
Compact Mode (without RF+AF Display) | Shift+X
Zoom RF Spectrum | Ctrl+'+'
UnZoom RF Spectrum | Ctrl+'-'
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+'/'
S-meter calibration: Increase level | Shift+Up
S-meter calibration: Decrease level | Shift+Down
S-meter calibration: Reset level | Shift+Home
AFC | F
Set AFC carrier search range for AM/ECSS modes | Shift+A
CW ZAP | Z
CW Peak | P
CW Despreading | D
Switch between RX and TX | Space
TX mode: Switch CW carrier tone on/off | Return
Rewind WAV file | Shift+W or Shift+Home
Jump to next WAV file (Multipart WAV file only) | Shift+End
Switch WAV file looping | Shift+O
Record WAV file | 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
Show GUI of ExtIO-DLL | H
Help / Info / Update check | F1
Start/Stop HDSDR | F2
Minimize HDSDR | F3
Exit HDSDR | F4
Open sound card selection dialog | F5
Open sampling rate dialog | F6
Open Options menu | F7
Full Screen | F11
Boss Key | Pause