190-01499-02 GTX 3X5 Transponder TSO Installation ManualRev. 4 Page 1-16Table 1-15 Complex Hardware Design Assurance LevelsNotes:[1] Developed to DO-178B level B equivalent process.1.14.3 Transmitter Grant of Equipment AuthorizationTable 1-16 Equipment Authorization1.15 License RequirementsCAUTIONThe UHF transmitter in this equipment is guaranteed to meet Federal CommunicationsCommission acceptance over the operating temperature range. Modifications notexpressly approved by Garmin could invalidate the license and make it unlawful tooperate the equipment.NOTEFor non-US installations consult the local spectrum management agency forrequirements.The Telecommunications Act of 1996, effective February 8, 1996, provides the FCC discretion toeliminate radio station license requirements for aircraft and ships. The GTX 3X5 installation must obeycurrent transmitter licensing requirements. In the US, to find out the specific details on whether a particularinstallation is exempt from licensing, visit the FCC website http://wireless.fcc.gov/aviation.If an aircraft license is necessary, apply for a license on FCC Form 404, Application for Aircraft RadioStation License. The FCC also has a fax-on-demand service to supply forms by fax. The GTX 3X5 owneraccepts all responsibility for obtaining the proper licensing before using the transponder.Function DO-254Main board, transponder, and I/O CADS-B board, 978 MHz and 1090 MHz receivers CGPS receiver B [1]Model FCC IDGTX 335 IPH-02133GTX 335RGTX 345 IPH-02256GTX 345R
