190-00906-01 GTX 23 Installation ManualRev. C Page 1-21.3 ADS-B CapabilitiesThe GTX 23 provides the capabilities of Automatic Dependent Surveillance-Broadcast (ADS-B)technology, which improves situational awareness and flight safety. With ADS-B capabilities, position,velocity, and heading information are automatically transmitted to other aircraft and ground stations. Thecurrent air traffic control system depends on a transponder request for pertinent aircraft information.ADS-B provides automatic transmission of aircraft information without a request.NOTERS-232 ADS-B Out from a Garmin 4XX/5XX WAAS, GTN 6XX/7XX with GPS softwareversion 3.20 or later, or a GPS WAAS source that supports ARINC 743A output is requiredto support ADS-B transmissions.1.3.1 ADS-B VersionsThere are three distinct ADS-B versions recognized by regulatory authorities. As shown in the tablebelow, the Garmin GTX 23 w/ES currently supports ADS-B Out 1090MHz Extended Squitter capabilitymeeting ‘Version 1’ or ‘Version 2' ADS-B system requirements depending on software version(Table 1-1).Table 1-1 ADS-B VersionsADS-BVersionGTX 23w/ESCompliantSupportedSW VersionRegulatory Standard/Minimum PerformanceSpecificationVersion 1(applies to006-B1417-00Rev. A (v6.20))Yes 6.00 - 6.20 Equipment designed to TSO-166a / RTCA DO-260AVersion 2*(applies to All006-B1417-00Rev. ( ) except006-B1417-00Rev. A (v6.20)Yes 7.01and later Equipment designed to TSO-166b / RTCA DO-260B*Version required by 2020 ADS-B Out mandate defined in 14 CFR 91.225
