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64 73
SEE NOTE 1
44 67
(24 BITS)
1
0
2411 UO5
No. SO
T C
1 T
40
37
74 83
T SEE NOTE 2
68 73
T T SEE NOTE 3
44 61
OPERATOR 3-LETTER
DESIGNATOR
1
40 81
AIRCRAFT REGISTRATION MARKING (UP TO
7 ALPHANUMERIC CHARACTERS) (42 BITS)
C
1 T C
0 1
85
74 83
SEE NOTE 2
62 73
SERIAL
NUMBER
1-4096
83
0
A
T
85
O O A A
A
85
74 83
T SEE NOTE 2
A A
85
A A
Annex 10 - Aeronautical Telecommunications
EXAMPLE OF CODING (USER LOCATION PROTOCOL)
Volume III
CC = Country Code;
E = Encoded position data source: 1 = Internal navigation device, 0 = External navigation device
EXAMPLE OF CODING (STANDARD LOCATION PROTOCOL)
c133
144+
12
12-BIT BCH
ERROR
CORRECTING
CODE
CC = Country Code;
PC = Protocol Code 001 1 indicates 24-bit aircraft address is encoded;
0101 indicates operating agency and serial number are encoded;
0100 indicates ELT serial number is encoded.
SD = Supplementary Databits 107- 110 = 1101;
bit 111 = Encoded Position Data Source (1 = internal; 0 = external)
bit 112: 1 = 121.5 MHz auxiliary radio locating device;
0 = other or no auxiliary radio locating device.
t 1 1 3
132+
Note 1.- Further details on protocol coding can be found in Specijlcation for COSPAS-SARSAT 406 MHz Distress Beacon
(C/S T.001).
Note 2. - All ident@cation and location data are to be encoded in binary notation with the bast significant bit on the right
except for the aircrafr operator designator (3 lerrkr code).
c 8 6
106+
'25
Note 3. - For details on BCH error correcting code see Specification for COSPAS-SARSAT 406 MHz Distress Beacon
(CIS T.OO1).
c107
112+
1 1 1 0 3
1 1 C C T
c 2 7
36+
26
2411 1/05
No. 80
21
2lBIT BCH
ERROR
CORRECTING
CODE
c 3 7 I
It40 85+
39+1 83+ 1
44
IDENTIFICATION
DATA
(AS IN ANY OF USER
PROTOCOLS ABOVE)
2
A
1
E
13
1 7 4 1 8 4
E
1
W
12
LATITUDE
DEG
0-160
(1 d)
MIN
0-56
(4m)
N
1
S
MIN
0-56
(4 m)
DEG
0-90
(I d)
Annex 10 - Aeronautical Telecommunications
EXAMPLE OF CODING (NATIONAL LOCATION PROTOCOL)
CC = Country Code;
25
ID = Identification Data = %bit identification data consisting of a serial number assigned by the appropriate national authority
SD = Supplementary Data = bits 107 - 109 = 110;
bit 110 = Additional Data Flag describing the use of bits 113 to 132:
1 = Delta position; 0 = National assignment;
bit 11 1 = Encoded Position Data Source: 1 = internal, 0 = external;
bit 112: 1 = 121.5 MHz auxiliary radio locating device;
0 = other or no device
NU = National use = 6 bits reserved for national use (additional beacon type identification or other uses).
Note 1.- Further details on protocol coding can be found in Specification for COSPAS-SARSAT 406 MHz Distress Beacon
(C/S T.OO1).
26
Note 2.- AN identification and location data are to be encoded in binary notation with the least significant bit on the right.
Note 3.- For details on BCH error correcting code see Specification for COSPAS-SARSAT 406 MHz Distress Beacon
(C/S T.0OI).
e 2 7
36+
61 BITS
PDF-1
BCH-1
21
21-BIT
BCH
CODE
I
t 3 7
40+1 e 4 1 85+
D
e 8 6
106+
BCH-2
12
12-BIT
BCH
CODE
t--- 26 BITS ------)
PDF-2
6
SD
1 1 1 0 4
CC
107
112
1000
e l 1 3
132-
6
4 N U
e l 3 3
144-b
45 7
A LATITUDE
18 bits
ID
18
NATIONAL
ID
NUMBER
7
ALONGITUDE
- = o
+ = 1
27 bits
LATITUDE
LONGITUDE
S
E
C
0
N
D
S
0-56
(4 s)
- = 0
+ = I
M
I
N
U
T
E
S
0-3
(lm)
N = O
S - 1
M
I
N
U
T
E
S
0-3
(1 m)
1 2 4 1 2
S
E
C
0
N
D .
S
0-56
(4s)
D
E
G
R
E
E
S
0-90
(1 d)
M
I
N
U
T
E
S
0-58
(2 m)
1 7 5 1 8 5
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