HFDL Ground Stations (traffic to and from)

HFDL (High Frequency Data Link) is a HF data link protocol, defined in ARINC spec 635-3.It may be described as some sort of HF ACARS.  It's used to exchange data such as Aeronautical Operational Control (AOC) messages, Controller Pilot Data Link Communications (CPDLC) messages and Automatic Dependent Surveillance (ADS) messages between aircraft end-systems and corresponding ground-based HFDL ground stations.

Transmissions on HF are in USB on a sub carrier of 1440 Hz with a symbol speed of 1800 baud. Modulation is 2-PSK, 4-PSK or 8-PSK with effective bit rates of 300, 600, 1200 or 1800 bits/sec.
The HFDL service is operated by ARINC as GLOBALink service through a worldwide network of HF stations. 

Ground Station ID 1
SAN FRANCISCO - CALIFORNIA
Longitude 121 45 34  W  Latitude 38 22 48  N 

Ground Station ID 2
MOLOKAI - HAWAII
Longitude 157 10 46  W  Latitude 21 10 47  N 

Ground Station ID 3
REYKJAVIK - ICELAND
Longitude 21 50 59  W  Latitude 64 4 47  N 

Ground Station ID 4
RIVERHEAD - NEW YORK
Longitude 72 38 22  W  Latitude 40 52 47  N 

Ground Station ID 5
AUCKLAND - NEW ZEALAND
Longitude 174 48 35  E  Latitude 37 1 10  S

Ground Station ID 6
HAT YAI - THAILAND
Longitude 100 23 24  E  Latitude 6 56 23  N 

Ground Station ID 7
SHANNON - IRELAND
Longitude 8 55 46  W  Latitude 52 43 48  N

Ground Station ID 8
JOHANNESBURG - SOUTH AFRICA
Longitude 28 12 35  E  Latitude 26 7 46  S

Ground Station ID 9
BARROW - ALASKA
Longitude 156 46 46  W  Latitude 71 18 0  N 

Ground Station ID 11
ALBROOK - PANAMA CITY
Longitude 79 32 59  W  Latitude 8 58 12  N

Ground Station ID 14
KRASNOYARSK - RUSSIA
Longitude 92 18 0  E  Latitude 56 6 0  N 

Ground Station ID 13
SANTA CRUZ - BOLIVIA
Longitude 63 7 46  W  Latitude 17 40 11  S 

Ground Station ID 16
AGANA - GUAM
Longitude 144 48 0  E  Latitude 13 28 11  N  

Ground Station ID 15
AL MUHARRAQ - BAHRAIN
Longitude 50 39 0  E  Latitude 26 16 12  N 

Ground Station ID 17
CANARIAS - SPAIN
Longitude 15 23 23  W  Latitude 27 56 59  N