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Damper (code OR023006)
When communicating underwater at short distance or in closed environments, it is often possible that audio distortion is caused by excessive transmission strength. The transmitters are relatively powerful, and if they are used in a pool or very close to each other, distortion can be created.
The audio goes “off the scale”, and becomes difficult to understand. The “damper” can be inserted on the antenna; it is made of a spongy material with many tiny air pockets.
The combination of the two materials creates the filter needed to reduce the transmission power as needed and make conversation intelligible again.