Ameri-King AK-451-ELT - Manual (Page 88)

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Note 1:
This is not a measured check. It only indicates that the G-Switch is working.
3.4.7.2
Antenna Check: A low quality AM Broadcast Radio Receiver or
Equivalent Test Equipment should be used to determine if energy is being transmitted
from the Antenna. When the Antenna of this Radio (tuning dial on any setting) is
held about 6 inches from the activated ELT Antenna, the ELT Aural tone will be
heard (see notes 2 and 3). The ELT must be reset by pressing either the RESET push
button located on the ELT Main unit or the ELT Remote Unit.
Note 2:
This is not a measured check, but it does provide confidence that the Antenna is
radiating with sufficient power to aid search and rescue. The Aircraft’s VHF
Receiver, tuned to 121.5 MHz, may also be used. This Receiver however is more
sensitive and could pick up a weak signal even if the radiating ELT’s Antenna is
disconnected. Thus, it does not check the integrity of the ELT System or provide the
same level of confidence as does an AM Radio.
Note 3:
Because the ELT radiates on the emergency frequency, the Federal Communications
Commission allows these tests to be conducted only within the first 5 minutes after
any hour.
IMPORTANT NOTE:
IN NORMAL CONFIGURATION, THE MAIN SWITCH, LOCATED ON THE
ELT MAIN UNIT, MUST BE SELECTED AT “ARM” POSITION AT ALL TIMES.
3.4.8
Verification of Digital Message
Note:
This test is not mandatory per FAR 91.207(d) however Ameri-King strongly
recommends that it be performed as part of periodic maintenance, at least every
year.
Verify the 406 MHz digital message using a Computer Test Set or equivalent, capable
of receiving and decoding the message. Ameri-King suggests the Ameri-King ELT
Computer Test Set P/N TS-451. Contact your local Ameri-King dealer for availability
of the Computer Test Set or call Ameri-King. Follow instructions provided with the
computer test set.
The AMERI-KING AK-451 has a self-test feature, which is encoded such that it will
be ignored by the SAR satellite system. This 15-digit number is used to register the
ELT with the appropriate 406 MHz ELT registration authority. In the US, the
National Oceanic and Atmospheric Administration (NOAA) maintain the database of
registered ELT's.