Transportable Mobile Repeater User’s Guide General Safety and Compliance Information 9© Copyright Tait International Limited March 20191.3 Environmental Conditions1.3.1 Operating Temperature RangeThe operating temperature range of the equipment is –22°F to +140°F(–30°C to +60°C) ambient temperature. Ambient temperature is defined asthe temperature of the air at the intake to the cooling fans.1.3.2 HumidityThe humidity should not exceed 95% relative humidity through thespecified operating temperature range.1.3.3 Dust and DirtFor uncontrolled environments, the level of airborne particulates must notexceed 100μg/m 3.1.4 Regulatory Information1.4.1 Distress FrequenciesThe 406 to 406.1MHz frequency range is reserved worldwide for use byDistress Beacons. Do not program transmitters to operate in this frequencyrange.1.4.2 Compliance StandardsThis equipment has been tested and approved to various national andinternational standards. Refer to the latest issue of the SpecificationsManual for a complete list of these standards.1.4.3 Unauthorized ModificationsAny modifications you make to this equipment which are not authorized byTait may invalidate your compliance authority’s approval to operate theequipment.The manufacturer is not responsible for any radio or TV interferencecaused by unauthorized modifications to this equipment. Suchmodifications could void the user’s authority to operate the equipment.