User guide
Table Of Contents
- Record of Revisions
- Service Bulletin List
- List of Effective Pages
- Table of Contents
- List of Figures
- Introduction
- Description and Operation
- Test and Fault Isolation
- 1. Inspection and Test Regulatory Requirements
- 2. Inspection and Test Procedures
- A. Checklist
- B. Preparation
- C. Coax Cable and Wiring Connections Inspection – Item 1
- D. Mounting Tray and Hardware Inspection – Item 2
- E. Battery Pack Inspection – Item 3
- F. G-Switch Functional Check – Item 4
- G. Performance Testing Setup
- H. 121.5 MHz Frequency Measurement – Item 5a
- I. Audio Modulation Check – Item 5b
- J. 121.5 MHz Power Output Measurement – Item 5c
- K. 406 MHz Frequency Measurement – Item 5d
- L. 406 MHz Power Output Measurement – Item 5e
- M. Current Draw Test – Item 5f
- N. Digital Message Verification – Item 5g
- O. ELT Reset Check – Item 5h
- P. Installed Transmitter Test – Item 6
- Q. Antenna Test – Item 7
- R. Inspection and Test Documentation – Item 8
- 3. Fault Isolation
- Removal
- Installation
- 1. Regulatory Requirements and Guidelines
- 2. Mounting Tray
- 3. Antenna
- 4. Remote Switch
- 5. Buzzer
- 6. Wiring
- A. General Considerations and Recommendations
- B. Remote Switch Harness Fabrication
- C. ELT D-Sub Plug Installation
- D. Cockpit Remote Switch 9-Pin Plug Installation
- E. Wiring Installation
- F. Antenna Connection
- G. Cockpit Remote Switch Power Connection
- H. Remote Switch Alternate Power Source
- I. Airframe Ground Connections
- J. Buzzer Connections
- K. Remote Switch Final Installation
- 7. ELT Installation
- 8. Battery Pack Installation
- 9. Helicopter Installations - Special Considerations
- Appendix A – ELT Registration
- Illustrated Parts List
ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ME406 (453-6603), ME406HM (453-6604)
25-62-30
Page 16 of 84
Jun 25/13
TASK 25-62-30-990-804
4. Frequency Allocations
SUBTASK 25-62-30-990-001
A. Application
(1) This section addresses the 406.0-406.1 MHz transmitter window and the specific frequency
band allocations residing above 406.025 MHz, beginning with 406.028 MHz, which are
assigned or reserved within the 406.0-406.1 MHz distress frequency window.
SUBTASK 25-62-30-990-002
B. Discussion
(1) The 406 MHz transmitter frequency of the ME406 Series ELT was originally 406.028 MHz. In
order to comply with COSPAS-SARSAT frequency allocation requirements, changes to the 406
MHz frequency may occur since the original release of this product.
(2) While the original ME406 Series ELTs covered by this manual transmit on 406.028 MHz,
current ME406 Series ELTs may not. The product identification label on each ELT specifies the
transmitting frequencies of the individual ELT. The 406 MHz component may be 406.028,
406.037 MHz, etc. Allocation of frequencies, based on beacon population per specified
frequency band, is controlled by COSPAS-SARSAT.
(3) The frequency references throughout this manual for the 406 MHz component should be
considered the baseline and the specific frequency indicated on the ELT product label should
be substituted if it differs from 406.028 MHz.