Page 1-8 GNS 400W Series Installation ManualRev. G 190-00356-081.4.8 GPS Antenna RequirementsAntenna performance is critical to the GPS/WAAS operation. The antennas listed in Table 1-2 areapproved for installation with the 400W Series units.Table 1-2. Antennas Without IFR GPS Operational LimitationsModel/Description Mount Style ConnType Mfr Part Number Garmin OrderNumberGA 35, GPS/WAASScrewmount,Teardropfootprint[1]TNCGarmin 013-00235-00 013-00235-00AeroAntenna AT575-93GW -TNCF-000-RG-27-NM 013-00235-00GA 36, GPS/WAASScrewmount,ARINC 743TNCGarmin 013-00244-00 013-00244-00AeroAntennaAT575-126GW-TNCF-000-RG-27-NM 013-00244-00GA 37, GPS/WAAS+XMScrewmount,ARINC 743TNCTNCGarmin 013-00245-00 013-00245-00AeroAntennaAT2300-126GW-TNCF-000-RG-27-NM 013-00245-00Comant ,GPS/WAAS+VHFScrewmount,TeardropCOMTNCBNC[2]Comant CI-2580-200 [4] N/AComant GPS/WAAS+VHFScrewmount,TeardropTNCBNC[2]Comant CI-2728-200 [4] N/AComant GPS/WAAS+XM+VHFScrewmount,TeardropCOMTNCTNCBNC[3]Comant CI-2728-410 [4] N/A[1] Same mounting hole pattern as GA 56, but GA 35 antenna has a physically larger footprint.[2] The GPS/WAAS connector is a TNC type. The VHF connector is a BNC type.[3] The GPS/WAAS connector is a TNC type. The XM connector is a TNC type. The VHF connector isa BNC type.[4] It is the installer‘s responsibility to ensure the antenna complies with Antenna MinimumPerformance Specification for Garmin‘s GPS/WAAS Receiver System Antenna(004-00287-00) by communicating the requirement to the supplier and obtaining a certificateof compliance to 004-00287-00 from the supplier. An antenna that complies only withTSO-C144 requirements is not adequate for this installation.
