Frequency allocations, A. application, B. discussion – ACR&Artex G406-4 ELT User Manual
Page 20
ACR ELECTRONICS, INC / ARTEX PRODUCTS
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
G406-4 (453-5012)
25-62-21
Page 20 of 86
JUL 31/12
TASK 25-62-21-990-804
4. Frequency Allocations
SUBTASK 25-62-21-990-001
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 25-62-21-990-002
B. Discussion
(1)
The 406 MHz transmitter frequency of the G406-4 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 G406-4 ELTs covered by this manual transmit on 406.025 MHz, current
G406-4 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.