A method for etalon suppression in a gas detection device by determining an etalon fringe period during a calibration step without gas in dependency of the DC drive current. The pressure in the surrounding of the container and thus within test cavity is monitored. The rebound strap thereof is formed from a uniform textile segment, the first, shorter segment of the rebound strap is formed as a tab cut out of the second, longer segment the tab being narrower and shorter than the second, longer segment of the rebound strap. The station can announce its emergency call capabilities in an association request frame, a reassociation request frame, an authentication request frame, or a reauthentication request frame.