Turn off Morse code beeping in FSX using the audio panel or default keyboard shortcuts, with fixes for NAV, ADF, DME and marker sounds.
The Morse-code beeping in FSX is usually a navigation-station identifier. On the aircraft’s audio panel, deselect the active NAV1, NAV2, ADF, DME or MKR monitor button. This silences the sound without changing the tuned frequency or disabling the VOR, ILS, ADF or DME guidance you are using.
How do I silence the FSX navigation identifier?
- Open the audio panel. Display the aircraft’s radio stack or audio panel through
Views > Instrument Panel. PressAltfirst if the FSX menu bar is hidden. Panel names and locations vary between aircraft. - Find the selected audio source. Look for a pressed or illuminated button labelled
NAV1,NAV2,ADF,DMEorMKR. - Deselect that button. The Morse ident should stop immediately or at the end of its present transmission.
- Leave the radio tuned. Turning off ident audio does not prevent the corresponding needle, course deviation indicator or distance display from working.
FSX also provides default keyboard toggles:
| Audio source | Panel label | Default shortcut |
|---|---|---|
| NAV 1 identifier | NAV1 | Ctrl+1 |
| NAV 2 identifier | NAV2 | Ctrl+2 |
| Marker beacon sound | MKR | Ctrl+3 |
| DME identifier | DME | Ctrl+4 |
| ADF identifier | ADF | Ctrl+5 |
These shortcuts are toggles, so pressing the wrong one can switch another source on. Use the audio panel to see which source is selected rather than cycling through every shortcut.
Can I stop the Morse code without disabling navigation?
Yes. The audio-monitor switch and the navigation receiver are separate. You can silence a VOR or ILS identifier while continuing to follow its course, and you can mute an NDB ident while retaining the ADF bearing.
A mistake we see constantly is turning down all cockpit sound or untuning the frequency. That works, but it also removes other useful sounds or loses the navigation signal. Deselecting only the relevant audio source is the cleaner fix.
What if the beeping continues?
The pattern and timing usually reveal whether the sound is actually a station identifier.
- Short Morse group repeated periodically: Check NAV1, NAV2, ADF and DME monitoring.
- Patterned tone near an instrument approach: This is probably a marker beacon. Deselect
MKRor useCtrl+3. - Continuous horn linked to power, flaps, gear or airspeed: This is an aircraft warning, not Morse ident. Correct the aircraft condition rather than muting a navigation radio.
- Sound returns after loading a saved flight: The saved cockpit state may include an enabled audio-monitor button. Turn it off and save the flight again.
If the shortcuts do nothing, inspect Options > Settings > Controls. The assignments may have been changed or removed. Look for the NAV ident, marker sound, DME ident and ADF ident control events.
Does the fix differ in FSX: Steam Edition?
The stock controls work the same way in boxed FSX and FSX: Steam Edition. They are not dependent on the Acceleration expansion; our breakdown of the Acceleration expansion and service-pack relationship explains what that package actually changes.
Complex add-on aircraft may replace the standard audio panel with custom gauges and may not honour every stock shortcut. For aircraft installed from our FSX aircraft and add-on library, check the included documentation for the modelled audio-panel controls. The correct switch may be on the overhead, centre pedestal or a separate pop-up panel.