Headset for a helmet

1. A headset for a helmet, the headset comprising a speaker unit,

a boom microphone and a skull microphone, wherein the headset further comprises a switch configured to activate the boom microphone or the skull microphone based on a position of the boom microphone, wherein the boom microphone comprises a rotating element enabling that the boom microphone is movable between a plurality of positions of the boom microphone, wherein the rotating element is mechanically mountable to the speaker unit or to the helmet, and

wherein the headset further comprises an actuator arranged to the rotating element, wherein when the boom microphone is in a use position, the actuator is far from the switch arranged to the speaker unit and the switch is in its first state, thereby causing that the switch is configured to connect a ground or signal of the boom microphone and disconnect the ground or signal of the skull microphone, respectively, to activate the boom microphone and deactivate the skull microphone, and

when the boom microphone is in a non-use position, the actuator is in a close vicinity to the switch and the switch is in its second state, thereby causing that the switch is configured to disconnect the ground or signal of the boom microphone and connect the ground or signal of the skull microphone, respectively, to deactivate the boom microphone and activate the skull microphone.

2. The headset according to claim 1 , wherein the switch is configured to:

activate the boom microphone and simultaneously deactivate the skull microphone, when the boom microphone is arranged to a use position, and

deactivate the boom microphone and simultaneously activate the skull microphone, when the boom microphone is arranged to a non-use position.

3. The headset according to claim 1 , wherein the switch is a reed switch and the actuator is a magnet.

4. The headset according to claim 1 , wherein the switch is an electromechanical switch, an optomechanical switch, or a mechanical switch, such as a micro switch or optoswitch, and the actuator is a mechanical actuator.

5. The headset according to claim 1 , wherein the boom microphone comprises a boom having a microphone arranged in its far end.

6. The headset according to claim 1 , wherein the boom microphone is detachably mounted to the speaker unit or the helmet with mechanical coupling means.

7. The headset according to claim 1 , wherein the skull microphone is fixedly coupled to the speaker unit.

8. A helmet comprising the headset according to claim 1 .