%% Title: High-Frequency Global Communications System (HFGCS) Created: 2023-11-09 12:20 Status: Parent: [[Resources/Radio|Radio]] Tags: Source: %% # High-Frequency Global Communications System (HFGCS) ### Frequencies (USB) - 4724.00 kHz - _6712.00 kHz_ - 6739.00 kHz - 8992.00 kHz - 11175.00 kHz - 13200.00 kHz - 15016.00 kHz ### Resources - [The HF-GCS and Emergency Action Messages](https://www.numbers-stations.com/usa/hfgcs/) - [Single Channel Transponder System (SCTS) (U) (archived)](https://www.globalsecurity.org/space/library/report/1999/nssrm/initiatives/scts.htm)