Garmin GSR 56 Installation Manual - Page 10

1.4.3 General Specifications Table 1-4. General Specifications Characteristics Operating Temperature Range (011-01706-00) Operating Temperature Range (011-02268-00) Humidity Altitude Range Software Compliance Specifications -15°C to +60°C. For more details see Environmental Qualification Form. -15°C to +70°C. For more details see Environmental Qualification Form. 95% non-condensing -1,500 ft to 55,000 ft RTCA/DO-178B Level E 1.4.4 General Iridium Antenna Requirements Table 1-5. Iridium Antenna Minimum Requirements Characteristics Frequency Range Gain (Typical) Polarization Nominal Output Impedance Operating Temperature Gain Antenna Cable Loss (transmit and receive) *STC/Installation dependent Specifications 1616 to 1626.5 MHz 3dBnc Right Hand Circular Polarization (RHCP) 50 ohms -50 to +85°C* 3.0dB Max 1.5 Approved Antennas Only antennas from a list of Iridium-approved antenna available from the Iridium website at http://www.iridium.com are approved for use with the GSR 56. This list currently includes: 1. Comant CI 490-1 2. Sensor System S67-1575-165 3. Antcom S3IR16RR 4. Dayton Granger L10-780 5. Dayton Granger L10-787 Page 1-4 Revision F GSR 56 Installation Manual 190-00836-00