Whistles

In military operations and outdoor activities, whistles can be a lifesaving accessory. They provide good service in emergency situations and can also contribute to communication over longer distances.

The Use of Whistles Should Be Coordinated in Advance

Whistles come in various designs that can produce different types of tones. The volume of these tones can be varied, allowing specific signals to be communicated over greater distances. The biggest advantage over radios, of course, is that no power source is needed. Using a whistle is very simple and requires no training. The agreement on its use and any signals must be made before deployment to avoid misunderstandings. A whistle is a reliable instrument that performs well in any type of operation and is so small and handy that it can be carried on one's person or attached to clothing.

Whistles are Available for Various Purposes

At ASMC, customers can find whistles in a wide selection, serving different purposes. Whistles emit a very shrill sound that can serve as a warning or command. A signal whistle can prompt a specific action that must be agreed upon in advance. An SOS whistle is used only in emergency situations. All offered whistles respond immediately and are of high quality.

Beforehand: It requires some practice and since this guide is in text form, success cannot be guaranteed. It's said - even with a skilled teacher - practice, practice, practice. It's best to have someone show you who can do it, as learning through observation is much easier. But here's a quick overview of how it can work. There are many ways to achieve the same goal, so try each method several times.

Method 1: Two Index Fingers Both index fingers must be placed under the slightly rolled tongue. The mouth must now press against the index fingers. If it doesn't work right away: This is completely normal, repeat several times.

Method 2: Index Finger and Thumb of One Hand Shape the index finger and thumb of one hand similar to a "C'est bon" sign (tastes good). Then "place" the two fingers in the mouth and fold the tongue back a little, press the mouth together, and blow air through. Here, too, the same applies: Practice, practice, practice.

How does the principle of a whistle work?
The airflow blown from the mouth is "pressed" over a slightly larger resonance chamber onto an edge, thereby producing a tone. The resonance chamber is responsible for air turbulence that enhances the effect. More information can be found here.

At what frequency do whistles operate?
According to Wikipedia, whistles can be roughly classified into the pitch of a child's voice, which corresponds to approximately 440 Hz. However, each whistle is different due to its construction and the size of the resonance chamber, so no general statements can be made.

What other types of whistles are there?
There are also dog whistles, which produce a tone in the ultrasonic range. This is so high-frequency that it is inaudible to humans. They are also called high-frequency or ultrasonic whistles.