This manual provides essential guidance for installing the KX 155 VHF NAV/COMM transceiver, ensuring safe and proper integration into aircraft avionics systems.
1.1 Overview of the KX 155 VHF NAV/COMM Transceiver
The KX 155 is a versatile VHF NAV/COMM transceiver designed for aircraft communication and navigation. It provides two-way voice communication and navigation signal reception, including optional glideslope functionality. As part of the BendixKing Silver Crown series, it is known for its reliability and seamless integration with existing avionics systems. The unit is panel-mounted and connects via printed circuit board edge connectors and coaxial cables, ensuring efficient installation and operation.
1.2 Purpose and Scope of the Installation Manual
This manual serves as a comprehensive guide for installing the KX 155 VHF NAV/COMM transceiver, ensuring proper integration with aircraft avionics systems. It outlines step-by-step procedures, safety precautions, and technical requirements for a successful installation. The scope includes configuration, wiring, and testing to ensure optimal performance. Intended for qualified technicians, the manual provides detailed instructions to meet regulatory standards and maintain system reliability, ensuring safe and efficient aircraft communication and navigation capabilities.
System Requirements and Compatibility
This section outlines the technical requirements and compatibility considerations for the KX 155 transceiver, ensuring seamless integration with existing avionics systems.
2.1 Technical Specifications of the KX 155 Transceiver
The KX 155 operates on 14 or 28 VDC, supporting seamless integration into various aircraft electrical systems. It features a frequency range of 118.00 to 136.975 MHz, enabling reliable communication and navigation. The transceiver is panel-mounted with edge connectors and coaxial cables for efficient installation. Its compact design and backward compatibility ensure easy replacement of older units without extensive rewiring, making it a versatile choice for modern avionics systems.
2.2 Compatibility with Existing Avionics Systems
The KX 155 transceiver is designed to integrate seamlessly with existing avionics systems, including legacy setups. It is backward compatible with earlier KX 155 and KX 165 models, allowing for straightforward replacement without rewiring audio pins. The transceiver supports standard communication and navigation protocols, ensuring compatibility with most aircraft systems. Its flexible design accommodates both 14 and 28 VDC power systems, making it suitable for a wide range of avionics configurations and aircraft electrical setups.
Pre-Installation Checks and Precautions
Before installation, ensure all power sources are disconnected to prevent electrical shocks. The KX 155 should be turned on only after engine startup and turned off before shutdown to protect its solid-state circuitry. Handle static-sensitive components with care, and ensure proper grounding to avoid damage. Always use appropriate tools and follow established avionics installation protocols to maintain system integrity and safety.
3.1 Essential Safety Precautions for Avionics Installation
Before starting the installation, ensure all power sources are disconnected to prevent electrical shocks. The KX 155 transceiver should only be powered on after engine startup and turned off prior to engine shutdown to protect its solid-state circuitry. Static-sensitive components must be handled with care, and proper grounding should be maintained to avoid damage. Always use appropriate tools and follow established avionics installation protocols to ensure safety and system integrity.
3.2 Power-Up and Shutdown Procedures
Power up the KX 155 transceiver only after engine startup to protect its solid-state circuitry. Similarly, ensure the unit is powered down before engine shutdown to prevent potential damage. Follow the recommended sequence to avoid power surges. Always allow the system to initialize fully before operation. Proper power management ensures reliability and extends the lifespan of the avionics equipment. Refer to the manual for detailed step-by-step procedures to maintain system integrity.
Installation Process
The KX 155 installation involves mounting the unit, connecting audio systems, and ensuring compatibility with existing avionics. Follow the manual for precise instructions to guarantee proper integration and functionality.
4.1 Step-by-Step Guide to Mounting the KX 155 Unit
Mounting the KX 155 unit begins with ensuring the aircraft panel has a compatible cutout. Align the transceiver with the panel, securing it with the provided screws. Connect the edge connectors and coaxial cables carefully, following the manual’s wiring diagram. Power-up the unit after installation to verify functionality. Ensure all connections are secure and test the system to confirm proper operation before finalizing the installation. This process ensures a safe and reliable setup.
4.2 Connecting Audio and Intercom Systems
The KX 155 unit seamlessly integrates with existing audio systems, maintaining compatibility without requiring rewiring of audio pins. Connect the transceiver to the aircraft’s intercom system using the designated audio ports. Ensure all cables are securely fastened to prevent signal loss. Test the system to verify clear communication and proper functionality of navigation features. This step ensures optimal performance and reliability of the audio and intercom systems during flight operations.
Configuration and Setup
This section details the process of programming the KX 155 for navigation and communication functions, as well as configuring audio settings for optimal system performance.
5.1 Programming the KX 155 for Navigation and Communication
The KX 155A is backward compatible with the KX 155, requiring no rewiring of audio pins. It offers enhanced audio features for flexible intercom configurations. Programming involves setting navigation frequencies and communication channels. The transceiver supports two-way voice communication and navigation signal reception, including optional glideslope. Audio settings can be customized for optimal performance in various aircraft environments. This ensures seamless integration with existing avionics systems, providing reliable navigation and communication capabilities.
5.2 Configuring Audio Settings for Optimal Performance
The KX 155A’s audio system offers enhanced flexibility, with backward compatibility ensuring no rewiring is needed. Its advanced features support various intercom configurations, providing clear communication. The transceiver includes automatic squelch with manual override for tailored audio performance. Proper configuration involves adjusting settings to match aircraft-specific requirements, ensuring optimal sound quality and minimizing interference. Follow the installation manual for detailed steps to customize audio settings effectively.
Testing and Validation
After installation, perform functional tests to ensure the KX 155 operates correctly, including communication and navigation checks. Validate all features and reference troubleshooting guides if issues arise.
6.1 Functional Tests for Communication and Navigation
Conduct rigorous tests to verify the KX 155’s communication and navigation capabilities. Ensure clear voice transmission, accurate navigation signal reception, and proper glide slope functionality. Use test equipment to validate frequency accuracy and output power. Perform ground and flight tests to confirm system performance under operational conditions. Refer to the manual for specific test procedures and expected results to ensure reliability and compliance with aviation standards.
6.2 Troubleshooting Common Installation Issues
Identify and resolve common issues during KX 155 installation, such as power-up failures, audio interference, or navigation signal loss. Check all connections for proper securing and verify power settings. Ensure compatibility with existing systems and refer to the manual for diagnostic procedures. Address ground loops or wiring faults that may cause interference. If issues persist, consult technical support or certified avionics professionals for assistance. Regular system checks can prevent recurring problems.
Maintenance and Upkeep
Regularly inspect and clean the KX 155 transceiver to ensure optimal performance. Follow scheduled maintenance routines and adhere to manufacturer guidelines for longevity and reliability.
The KX 155 requires periodic inspections to ensure reliability. Check the antenna connections every 100 flight hours and verify all electrical connections are secure. Clean the unit’s exterior and ensure no corrosion is present on connectors. Replace the internal filter every 500 hours or as specified. Always refer to the official maintenance manual for detailed procedures and guidelines to maintain optimal performance and compliance with aviation standards. Regularly following best practices ensures the KX 155’s durability. Always power on the transceiver after engine startup and off before shutdown to protect its circuitry. Refer to the Maintenance Manual for periodic inspection schedules, including cleaning connectors and checking for corrosion. These practices maintain optimal performance and extend the system’s lifespan. This concludes the KX 155 installation guide. Adhering to these steps ensures optimal performance and longevity of your avionics system. The KX 155 installation requires careful planning and adherence to safety protocols. Proper grounding and audio system connections are critical. Ensure power-up occurs after engine start and shutdown before engine stop to protect circuitry. Compatibility with existing avionics systems must be verified. Follow all safety precautions and manufacturer guidelines for optimal performance and reliability. Regular maintenance and proper configuration ensure long-term functionality. Always refer to the manual for specific instructions and troubleshooting. After completing the installation, perform a thorough inspection of all connections and configurations. Verify proper electrical grounding and audio system integration. Test communication and navigation functions to ensure optimal performance. Review all settings and configurations for accuracy. Conduct a final power-up and shutdown sequence to confirm system stability. Inspect the physical installation for security and compliance with safety standards. Consult the manual for any last-minute adjustments or validations.7.1 Scheduled Maintenance for the KX 155 Transceiver
7.2 Best Practices for Long-Term System Reliability
8.1 Summary of Key Installation Points
8.2 Final Checks for a Successful Installation