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FreeFlight FDL-978 - User Manual

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FDL-978 ADS-B Equipment
Pilot Guide/User Manual
Part Numbers
87098-XX-XXXX
This document contains FreeFlight Systems proprietary information. It is loaned for limited purposes only and
remains the property of FreeFlight Systems. It may not be reproduced in whole or in part without written consent of
FreeFlight Systems and must not be disclosed to persons not having need of such disclosure consistent with the
purpose of the loan. The document is to be returned to FreeFlight Systems upon request and/or upon completion of
the use for which it was loaned.

Table of Contents

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Preview: Quick Reference Guide
Quick Reference Guide2 pages

Questions and Answers

  • G
    Gina PageAug 17, 2025
    Why does my FreeFlight Transmitter show a GPS Fault?
    • R
      Rebecca RogersAug 17, 2025
      The GPS Fault in the FreeFlight Transmitter indicates that the GPS has reported an unavailable position or a fault.
  • S
    skellyAug 19, 2025
    What does PSU Fail mean on a FreeFlight Transmitter?
    • C
      Christopher NavarroAug 19, 2025
      A PSU Fail in the FreeFlight Transmitter indicates an internal DC Power Supply failure.
  • W
    wchandlerAug 22, 2025
    What causes Bot Ant Fault on a FreeFlight Transmitter?
    • R
      roberthuynhAug 22, 2025
      The Bot Ant Fault on the FreeFlight Transmitter indicates that the bottom antenna is disconnected.
  • C
    craig05Aug 26, 2025
    Why is my FreeFlight Transmitter showing 'Remote Hot'?
    • D
      daniellebrownAug 26, 2025
      If your FreeFlight Transmitter displays 'Remote Hot', it means the FDL-978 ADS-B equipment internal temperature is too high.
  • E
    ericawelchAug 28, 2025
    What does ADC Fault mean on FreeFlight Transmitter?
    • G
      Gerald FletcherAug 28, 2025
      An ADC Fault in the FreeFlight Transmitter suggests an ADC or Altitude encoder fault or that it is not responding.
  • A
    Aaron PerkinsAug 31, 2025
    What does TX Fault mean on FreeFlight Transmitter?
    • M
      Madison LindseyAug 31, 2025
      A TX Fault on a FreeFlight Transmitter indicates a generic Transceiver Fault related to POST, transmit, address, broadcast, or nominal rate failure.
  • T
    Tonya ReedSep 2, 2025
    Why is the Tx Power Low on my FreeFlight Transmitter?
    • R
      Robert McintyreSep 2, 2025
      The Tx Power Low error in the FreeFlight Transmitter indicates that the transceiver power is too low.
  • C
    Christopher AdamsSep 5, 2025
    What causes Tx PSU High error on FreeFlight Transmitter?
    • R
      Rachel JeffersonSep 5, 2025
      The Tx PSU High error on the FreeFlight Transmitter means the transceiver power supply voltage is too high.
  • T
    terrileeSep 8, 2025
    What does Tx PSU Low mean on FreeFlight Transmitter?
    • K
      Katherine HernandezSep 8, 2025
      The Tx PSU Low error on the FreeFlight Transmitter indicates that the transceiver power supply voltage is too low.
  • J
    Jonathan CainSep 12, 2025
    What is a Squitter Fail on a FreeFlight Transmitter?
    • T
      Tammy JamesSep 12, 2025
      A Squitter Fail in the FreeFlight Transmitter means there is a transceiver modulation fault.

Summary

Introduction to FDL-978 ADS-B System

1 Introduction Overview

Provides a brief overview of the FDL-978 ADS-B system and its purpose in aviation.

1.1 System Description

Details the FDL-978 ADS-B equipment, its interface with the TC978 controller, and manual contents.

TC978 Controller Operation

2.1 TC978 Display and Symbols

Explains the TC978 controller's display elements, including wave symbols for ADS-B reception/transmission.

2.2 Mode Selection Knob Functions

Details the operation of the Mode Selection knob for controlling the FDL-978 ADS-B equipment's power and modes.

2.3 CODE Knob for Data Entry

Guides users on using the CODE knob to set Squawk Codes and Call Sign/Flight ID.

2.4 External Control and Reverse Video Display

Describes the effect of external control inputs on the TC978 display, including reverse video.

2.5 TC978 Push Button Functions

Covers the functionality of the IDT, FN, VFR, and ENT buttons on the TC978 controller.

2.6 TC978 Warning Message Indicators

Explains how the TC978 displays warnings and the significance of the MSG icon.

2.7 TC978 No Remote Link Scenarios

Describes the TC978 display when communication is lost with the FDL-978 ADS-B equipment.

2.8 TC978 Fault Annunciation

Details how the TC978 indicates catastrophic internal failures of the FDL-978 ADS-B equipment.

Miscellaneous System Features

3.1 Anonymous Mode Operation

Explains the Anonymous Mode feature for broadcasting random ICAO addresses and its operational constraints.

3.2 ADS-B Annunciator Functionality

Describes the ADS-B annunciator used to signal device or position source failures when no TC978 is present.

Appendix A: Acronyms and Abbreviations

Appendix B: Limited Warranty Information

FreeFlight FDL-978 Specifications

General IconGeneral
BrandFreeFlight
ModelFDL-978
CategoryTransceiver
LanguageEnglish

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