The state of play?

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jpett...@gmail.com

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Sep 3, 2025, 10:37:23 PM (4 days ago) Sep 3
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monroe....@gmail.com

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Sep 4, 2025, 11:55:16 AM (3 days ago) Sep 4
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After reading the report my take is…

 

Register complaints directly with enforcement agencies regarding intended emissions violators outside instance satellite assigned wavelengths, regardless of band, RA exclusive, RA shared, or other.

 

The key to mitigation of UEMR (unintended) and obviously unintended reflections of ground-based sources will be through future design changes (improved spurious EM containment, antireflective coatings on reverse side of PV arrays and satellite package facets).  Unless it can be accomplished through uploaded software changs, can’t change UEMR or unintended reflections for hardware already on orbit.  Luckily LEO satellites are replaced every 3-5 years, even sooner if a technological advancement is worth replacement (windows of opportunity for improvements). 

 

Keep up with UEMR feedback reporting to those makers willing to listen, and improve, even when what they have on orbit is already operating within international standards. 

 

Work with standards groups (ITU, FCC) to further tighten constraints on space-based UEMR standards for satellites. 

 

Realize that a ground-based radio astronomy observatory capable of discerning nanowatts (or less) from deep space will see UEMR of microwatts as a floodlight which, as indicated, might be within current international standards.

 

What are the UEMR wavelengths and power levels of currently on orbit non-SpaceX satellites, the largest payload, with the largest antennas, both geostationary and non-geostationary?  Don’t see much reporting on those.  Not all are clandestine (which emit whatever).  Many others are commercial (capable of being legally constrained to at least current standards, assigned wavelengths, and standards-based UEMR).  There are far larger than Starlink individual commercial and governmental satellites (BlueWaker-3, Jupiter-3/EchoStar-24, VisSat-3, Magnum/Orion, Mentor), with greater quantities of far higher power electronics with far larger parabolic and flat panel array antennas.  Their high altitude and geostationary orbits can last hundred+ years (even a long-dead GEO satellite with a large flat panel array is EM reflective), very long-term disrupters.  Non-Starlink satellites with flat panel phased arrays the size of a tennis court have got to result in far greater unintended reflection of ground-based sources.

 

Of course it’s just my opinion.

 

Monroe

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