1. Radar Warning System
1.4. Audio Warnings
Certain sounds are used to warn the pilot of threats. For example, if a new radar source is detected or a source changes to a more dangerous status, a warning tone is played.
If a source disappears or the threat decreases, no tone is played.
We will explain these sounds here:
- Status Change (StatusChange)
- Single 455hz tone with a duration of 0.335 seconds
- Shows the following:
- New Radar Source
- A radar source was moved from the safe to the dangerous zone
- A radar source was moved from the dangerous to the critical zone
- RWR BIT error
- Example:
- New Plane (Waterfall)
- Sequence of four tones in the following order. 550hz, 520hz, 490hz, 470hz. Each tone has a length of 0.083 seconds. The total length is 0.335 seconds.
- Played when a radar of an aircraft has been added
- Example:
- Radar Uplink (Missile Alert)
- A continuous tone that changes between 455hz and 555hz. Each tone has a duration of 0.25 seconds.
- Played when a station locks onto you
- Example:
- Missile Approach (MissileLaunch)
- A continuous tone that changes between 455hz and 555hz. But now the tone changes faster (only 0.1 seconds) than with radar activation.
- Example:
Source: https://forums.eagle.ru/showpost.php?p=3347570&postcount=7