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SDS Satellites in HEO

Tyneside, UK
2024 May 20
Monday, Day 141

Curated by:

SDS Tracking and Analysis:

Operational Frequencies

This is a list of all frequencies reported to be associated with known SDS satellites. Not all have been verified and some satellite names are tentative, based on circumstatial evidence when associating objects from Mike McCants's "classified.tle" file with known satellite names.

In addition, earlier SDS satellites in HEO also transmitted the AFSATCOM signal near 243.7 MHz. In recent years, only the transmissions from USA 125 and USA 137 have been logged.

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Freq (MHz) Satellite Mission Signal Type Notes