#downlink — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #downlink, aggregated by home.social.
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#ArsTechnica:
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US spy satellites built by SpaceX send signals in the “wrong direction”
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"It seems US didn’t coordinate Starshield’s unusual spectrum use with other countries."14.11.2025
#downlink #ISED #ITU #NASA #NOAA #NRO #NTIA #Raumfahrt #satcom #Satelliten #Satellitenkommunikation #sattv #SpaceFlight #SpaceX #Starlink #Starshield #uplink #USA
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#WinFuture:
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Geheime SpaceX-Satelliten funken auf verbotenen Frequenzen
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"Ein Netzwerk streng geheimer Satelliten des US-Raumfahrtunternehmens SpaceX sorgt derzeit für Unruhe unter Experten. Denn sie senden Signale auf Frequenzen, die sie in dieser Form eigentlich gar nicht nutzen dürfen."https://winfuture.de/news,154354.html
20.10.2025
#downlink #ITU #NRO #Raumfahrt #satcom #Satelliten #Satellitenkommunikation #SpaceFlight #SpaceX #Starlink #Starshield #uplink #USA
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If a #reticulum #meshchat instance with a #lxmf address on one computing device has 4 identical #lora #rnodes #rnode interfaces, each with same settings of frequency #spreadingfactor #sf, each rnode having a #directional #yagi #antenna in close vicinity, will transmission to a sender of a #deliveryconfirmation (#downlink) from 1 antenna to the sender's direction, be messed up due to local #collision at rnode 1 of different attempted #acknowledgement signals of the other 3 near rnodes?
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A Hybrid Helical Antenna for the Es’hail-2 Geosynchronous Repeater - Amateur radio operators like to say that working a contact in space can be done with a simple hand... - https://hackaday.com/2020/08/04/a-hybrid-helical-antenna-for-the-eshail-2-geosynchronous-repeater/ #geosynchronous #amateurradio #radiohacks #satellite #downlink #eshail-2 #repeater #helical #qo-100 #uplink #ham #lnb
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SatNOGS Update Hack Chat - Join us on Wednesday, October 30 at noon Pacific for the SatNOGS Update Hack Chat with Pierros Papad... more: https://hackaday.com/2019/10/28/satnogs-update-hack-chat/ #hackadaycolumns #groundstation #thehackchat #ephemeris #satellite #altitude #downlink #tracking #antenna #azimuth #network #satnogs
