EXAMPLES OF 406 MHz BEACON CODES

Standard Location Protocol with MMSI


(Actual Position--- 43 deg : 43 min : 57 sec North, 00 deg : 57 min : 51 sec East)
(Coarse Position encoded in PDF-1--- 43 deg : 45 min North, 01 deg : 00 min East)
(Position Offset encoded in PDF-2--- minus 01 min : 4 sec latitude, minus 02 min : 8 sec longitude)
(Rounded off Position Encoded in Beacon--- 43 deg : 43 min : 56 sec North, 00 deg : 57 min : 52 sec East)

 

Bit Field Name

Content Location

Bit Field

Bits
Message Format Long Message 25 1
Protocol Flag Location Prot. 26 0
Country Code 257 Norway 27-36 0100 0000 01
Location Protocol Type EPIRB-MMSI (Standard) 37-40 0010
Trailing 6 digits of the Ship
Station Identity (in binary form)
506153 41-60 0111 1011 1001 0010 1001
Specific EPIRB (in binary form) 2 61- 64 0010
Latitude Flag N 65 0
Latitude in Degrees 43 66-72 0101011
Latitude in 15 Minute Increments: 45 73-74 11
Longitude Flag E 75 0
Longitude in Degrees 1 76-83 0000 0001
Longitude in 15 Minute Increments 0 84-85 00
BCH-1 21-bit BCH Code 86-106 0101 1111 1110 0010 0000 0
Fixed bits   107-110 1101
Position data provided by external navig. device 111 0
121.5 auxiliary radio
location device
yes 112 1
Latitude offset sign minus 113 0
Latitude offset in min. 1 114-118 00001
Latitude offset in 4 second increments 4 119-122 0001
Longitude offset sign minus 123 0
Longitude offset in min. 2 124-128 0001 0
Longitude offset in 4 second increments 8 129-132 0010
BCH-2 12-bit BCH Code 133-144 0101 0011 0101

Beacon 15 Hex ID (bits 26 to 85): 2024F72524FFBFF
406 MSG (Long) (bits 25 to 144): 90127B92922BC022FF103504422535