\ HFGCS Quick Tune SDR List

HFGCS Quick Tune SDR List

Use the list below to quickly tune to the most used US Air Force High Frequency Global Communications System (HFGCS) frequencis as received directly by internet software defined radio (SDR) sites. Simply find the location you want and click on the frequency to open a receiver in a new browser tab. Sites below are selected by receiver performance and proximity to HFGCS transmitters. Frequencies 4724, 6739, 8992, and 11175 are the primary and secondary ones used for EAM and SKYKING broadcasts, though there are times when the E6 TACAMO or E4 NAOC aircraft can be heard elsewhere. If there is a training exercise or real-world battle, hunt around other frequencies, such as 6697, 8776, or 11244.

Belgium 4724 6697 6739 8776 8992 11175 11244 13200 15016
California 4724 6697 6739 8776 8992 11175 11244 13200 15016
Hawaii 4724 6697 6739 8776 8992 11175 11244 13200 15016
Indiana 4724 6697 6739 8776 8992 11175 11244 13200 15016
Italy 4724 6697 6739 8776 8992 11175 11244 13200 15016
Japan 4724 6697 6739 8776 8992 11175 11244 13200 15016
Kansas 4724 6697 6739 8776 8992 11175 11244 13200 15016
Montana 4724 6697 6739 8776 8992 11175 11244 13200 15016
Nevada 4724 6697 6739 8776 8992 11175 11244 13200 15016
Ohio 4724 6697 6739 8776 8992 11175 11244 13200 15016
Puerto Rico 4724 6697 6739 8776 8992 11175 11244 13200 15016
Texas 4724 6697 6739 8776 8992 11175 11244 13200 15016
Virginia 4724 6697 6739 8776 8992 11175 11244 13200 15016

Since propagation conditions vary between different receiver sites and frequencies, try different combinations to find which ones work best for your desired stations. Most KiwiSDRs have rather high default gain settings, producing plenty of noise, which can be bothersome. To avoid listener fatigue, reduce the AGC threshold to a setting between -85 and -90 dB. The KiwiSDR standard USB filter bandpass is perfect for HFGCS traffic, and stations on the net operate with precise, dead-on tuning. Avoid opening multiple SDR tabs from the same site at one time, as some sites detect and block users who draw excessive bandwidth.

If you find interesting action on the HFGCS frequencies, give some thought to making an audio recording or screen capture video to share on sites such as YouTube or Soundcloud


Tags:HFGCS, EAM, SKYKING, ROLLAWAY, Military Monitoring
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