ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-1 (453-5002), C406-1HM (453-5003)
Page 13 of 67
Feb 28/2019
25-62-10
TASK 25-62-10-990-804
4.
Frequency Allocations
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.
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B.
Discussion
1)
The 406 MHz transmitter frequency of the C406-1 Series ELT was originally 406.025 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 C406-1 Series ELTs covered by this manual transmit on 406.025 MHz, current C406-1
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 406.025, 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 406.025 MHz.
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5.
List of Acronyms, Abbreviations, and Definitions
SUBTASK 25-62-10-990-001
Term
Definition
AC
Advisory Circular
–
A Federal Aviation Administration (USA) bulletin with special
information. For the purposes of this document, the acronym AC does not refer to
electrical alternating current.
AWG
American Wire Gauge
–
An electrical wire diameter standard. Look for this
acronym in front of or following a wire size number.
BNC Connector
A very common type of coax cable connector having a 50
impedance and used
for RF signal connections.
CAR
Canadian Aviation Regulations
–
The rules and regulations governing the
manufacture, certification, operation, maintenance, and alteration of aircraft in
Canada.
CFR
Code of Federal Regulations
–
The general and permanent rules published in the
Federal Register by the executive departments and agencies of the Federal
Government. Title 14, “Aeronautics and Space” contains the FARs.
Container
The term “Container”, within the context of this document,
refers to a device
designed to suppress RF signals, such that the broadcast of an ELT placed in the
container cannot reach the SAR satellite system.
COSPAS-SARSAT
The international search and rescue consortium that governs the international
satellite-based search and rescue distress alert detection and information
distribution system. For a complete description go to the official web site for the
International COSPAS-SARSAT Program.
DER
Designated Engineering Representative
–
An individual qualified and designated
by the FAA to approve, or recommend approval, of technical data to the FAA.
