[SOIS-WIR] [EXTERNAL] [BULK] 2 SFCG recommendations resulting from the last SFCG meeting, to take into account in lunar wireless CCSDS standards

[Lansdowne, Chatwin (JSC-EV811)]

Jean-Luc,
Merci for directing our attention to this latest revision.  I do have some tunable notch filters now and hope I can begin doing some of this characterization of out-of-band emissions in the next few months.
Chatwin Lansdowne

From: SOIS-WIR <sois-wir-bounces at mailman.ccsds.org> On Behalf Of Issler Jean-Luc via SOIS-WIR
Sent: Thursday, August 21, 2025 7:42 AM
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Subject: [EXTERNAL] [BULK] [SOIS-WIR] 2 SFCG recommendations resulting from the last SFCG meeting, to take into account in lunar wireless CCSDS standards

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Dear Kevin, dear all,

Please find here attached 2 SFCG recommendations resulting from the SFCG meeting last june, in case you would not have it already:


  *   REC 32-2R6 (Freqs for lunar Region) which has been updated (this rec is already taken into account by the CCSDS 883 standard).
  *   REC 43-1, which is a new recommendation dedicated to the protection of lunar in-situ PNT from lunar surface wireless links.

I suggest that references to SFCG REC 43-1 to be added in the CCSDS 883 standard and in any other future CCSDS standard which would concern lunar wireless surface links.

The provisional SFCG REC 43-1 is already refered in LunaNet Interoperability Specifications V5, and REC 43-1 will likely be refered in LNIS V6. The recommended maximum -121 dBW/m2/MHz PFD limit from lunar wireless links in the 2483.5-2500 MHz band at the input of the PNT receive antenna is unchanged from "prov-43-1" to "43-1".

Hoping these informations and my suggestion to be usefull.

Have a nice day and a good summer continuation.

Very Best Regards

Jean-Luc
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