HFGCS ALE Network frequencies USB/ALE (scan channel number):
3137.0 (1) 4721.0 (2) 5708.0 (3) 6721.0 (4) 9025.0 (5) 11226.0 (6) 13215.0 (7) 15043.0 (8) 18003.0 (9) 23337.0 (10) kHz The ALE system used by the JCS HFGCS network is designated MIL-STD-188-141A. You can download a software program developed by Dr. Charles Brain to decode these digital transmissions at http://hflink.com/beta/. You can also use F6CTE's Multipsk program at http://f6cte.free.fr/index_anglais.htm. It is my favorite multimode program and always gets a workout in the Btown Monitoring Post.
ALE allows automated ground agency contact by selecting the best station and best frequency without operator interaction. ALE radios make this possible by using a data file that contains frequency, station, and other pertinent information. For ALE radios to operate properly, the radio must have loaded datafile, be turned on in the “automatic” mode, and remain there for the duration of the flight. If the radio is removed from the ALE mode, history tables will require time to rebuild and initial communications may be slightly degraded.
Net participating stations, identifiers, and specific frequency assignments used in the HFGCS ALE net:
ADW Andrews AFB, MD USA 3137 4721 5708 6721 9025 11226 13215 15043 18003 23337
AED Elmendorf AFB, AK USA 3137 4721 5708 6721 9025 11226 13215 15043 18003 23337
CRO RAF Croughton, UK 3137 4721 6721 9025 11226 13215 15043 18003 23337
GUA Andersen AFB, Guam 3137 4721 5708 6721 9025 11226 13215 15043 18003 23337
HAW Ascension Island 3137 4721 6721 9025 11226 13215 15043 18003 23337
HIK Hickam AFB, Hawaii 3137 4721 6721 9025 11226 13215 15043 18003 23337
ICZ Sigonella, Sicily Italy 3137 4721 5708 6721 9025 11226 13215 15043 18003
JDG NSF Diego Garcia 3137 4721 5708 6721 9025 11226 13215 15043 18003 23337
JNR Salinas, Puerto Rico 3137 4721 5708 6721 9025 11226 13215 15043 18003 23337
JTY Yokota AB, Japan 3137 4721 6721 9025 11226 13215 15043 18003
MCC West Coast (McClellan), CA USA 3137 4721 5708 6721 9025 11226 13215 15043 18003 23337
MPA Mt. Pleasant, Falkland Island 3137 4721 5708 6721 9025 11226 13215 15043 18003 23337
OFF Offutt AFB, NE USA 3137 4721 5708 6721 9025 11226 13215 15043 18003 23337
PLA Lajes AB, Azores 3137 4721 5708 6721 9025 11226 13215 15043 18003 23337
Selected non-HF-GCS stations observed in this net:
CEF 439AW, Westover AFB, MA
GBL Global General Address
GVT Raytheon, Greenville, TX
IKF NAS Keflavik, Iceland (HF-GCS facility closed)
OKC Oklahoma City (Tinker AFB), OK
RIC CAP Region 2 MER/CAP National Technology Center, Richmond, VA
RSC Rockwell Scope Command Facility, Greenville, TX
TAG Incirlik AB, Turkey (HF-GCS Facility Closed)
TOCAVN TOC Camp Bondsteel, Kosovo
WRL Warner-Robins AFB, GA