Table of Contents
1.0INTRODUCTIONANDDESCRIPTION
1.1PurposeofthisCharacteristic
1.2RelatedDocuments
1.3FunctionofEquipment
1.4AirborneAvionicsConfigurations
1.5UnitDescriptions
1.5.1MODEMProcessorUnit
1.5.2TransmitterReceiver
1.5.3Diplexer
1.5.4Antenna
1.5.5ControlPanel
1.6Interchangeability
1.7RegulatoryApproval
1.8ConformanceTesting
2.0INTERCHANGEABILITYSTANDARDS
2.1Introduction
2.2FormFactors,ConnectorsandIndexing
2.2.1MPU
2.2.2T/R
2.2.3Diplexer
2.2.4Antenna
2.2.5ControlPanel
2.3Interwiring
2.4PowerCircuitry
2.4.1PrimaryPowerInput
2.4.2PowerControlCircuitry
2.5EnvironmentalConditions
2.6Cooling
2.6.1Installation
2.6.2T/R
2.6.3MPU
2.7GroundingandBonding
3.0INTERFACINGREQUIREMENTS
3.1CTUtoMPUInterfaces
3.2MPUtoT/RInterfaces
3.3MPUtoAircraftSubsystemInterfaces
3.3.1MPUDisable
3.3.2BITE
3.3.3DataLoader
3.4MPUtoCP
3.4.1MPUDisable
3.4.2BITEInitiate
3.4.3BITEDisplay
3.5TransmitterReceivertoDiplexerInterfaces
3.6DiplexertoAntennaInterfaces
4.0RADIOSUBSYSTEMDESIGN
4.1General
4.2SoftwareLoading
5.0DIPLEXERDESIGN
5.1General
5.2PassbandFrequencies
5.3InsertionLoss
5.4ReturnLoss
5.5Rejection
5.5.1Channel1toAntenna
5.5.2Channel2toAntenna
5.5.3Channel3toantenna
5.6PowerHandling
6.0ANTENNADESIGN
6.1AntennaPerformanceCharacteristics
6.1.1ImpedanceandV.S.W.R.
6.1.2GainandPolarisation
6.1.3FrequencyCoverage
6.1.4PowerRating
6.2InstalledAntennaandTransmissionLine
Subsystem
6.2.1ImpedanceandV.S.W.R
6.2.2AntennaIsolation
6.3PhysicalConfiguration
6.4Finish
7.0BUILT-INTESTEQUIPMENT
7.1OMSMemberSystemBITE
7.2Non-memberSystemBITE
7.3DiplexerandAntennaBITE
ATTACHMENTS
1-1StandardInterwiring
1-2Antenna
1-3Diplexer
1-4EnvironmentalTestCategories
1-5AntennaGainMask
APPENDICES
1-1SystemDescription Abstract
Describes the characteristics of a full-duplex telephone service for Aeronautical Passenger Communications through a network of ground stations. The frequency bands of 1670-1675 MHz are used to receive and 1800-1805 MHz are used to transmit.
