py1san (@py1san) profile picture

py1san

@py1san

Electrical Engineer & HAM https://xitter.gq/t.co/6Oxne8jWTK

 Resende-Rio de Janeiro-Brazil
Joined June 2009
  • Tweets7.4K
  • Following1.1K
  • Followers548
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Photo by py1san (@py1san)Photo by py1san (@py1san)Photo by py1san (@py1san)Photo by py1san (@py1san)Photo by py1san (@py1san)Photo by py1san (@py1san)Photo by py1san (@py1san)Photo by py1san (@py1san)Photo by py1san (@py1san)Photo by py1san (@py1san)
🛰 TI3GB on ISS ⏰ 2026-11-07 from 10:15Z to 10:25Z 🗺 EJ89 📻 145.990↑ FM 📢 Roving 👀 hams.at/alerts/6d4eb2e2-c9c3…
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py1san retweeted
AMSAT (@AMSAT) profile picture
AMSAT@AMSATNov 8
ANS-312 AMSAT News Service Weekly Bulletins are now available. #amsat #hamr amsat.org/ans-312-amsat-news…
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Tiempos libres 3 Interlagos #f1
Image from Albert Fabrega (@AlbertFabrega)
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🛰 TI3GB on RS-44 ⏰ 2026-11-06 from 05:52Z to 06:10Z 🗺 EJ89/EJ89 📻 145.960↑ SSB 📢 Looking for new grids! 👀 hams.at/alerts/40a393a5-f074…
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py1san retweeted
FIA (@fia) profile picture
FIA
@fiaNov 6
Free Practice 1 - Classification 🇧🇷 #FIA #F1 #BrazilGP
Image from FIA (@fia)
Image from FIA (@fia)
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New #FT8, #FT4 and #CW #skimmer for #QO100 🛰️ Live decoded spots from the narrowband transponder, statistics and @QO100DxClub tags. qo100.ok1cdj.com/ Thanks @Hamparts_shop and @ok2zaw for the server for this project. #amsat #hamradio
Image from Ondra OK1CDJ/OL0M🇨🇿/SV0SYH/J42T🇬🇷 (@ok1cdj)
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Image from Calvo 😔 (@AnaliseDeCalvos)
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py1san retweeted
KH2XX_EOD (@KH2XX_EOD) profile picture
KH2XX_EOD@KH2XX_EODNov 4
AMSAT Status page has officially migrated to a new URL: status.amsat.org/🛰️📡
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MEGALOMANIA. madureira.substack.com/p/meg…
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py1san retweeted
Paulo PV8DX (@PV8DX) profile picture
Paulo PV8DX@PV8DXNov 4
ISS now 11:15 UTC RPT ON
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hackaday (@hackaday) profile picture
hackaday
@hackadayNov 2
Investigating whether Zener Diodes work for ESD Protection ift.tt/8lH5gko
Investigating Whether Zener Diodes Work For ESD Protection

Investigating Whether Zener Diodes Work For ESD Protection

Sometimes the naming of parts in electronics can contribute to confusion about what they are good for, with the topic of Zener diodes in the context of fast surges like those from electrostatic dis…

hackaday.com
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Imagine ter 20 anos e se tornar campeão do mundo dividindo o pódio com dois dos melhores pilotos da história.
Image from Julianne Cerasoli (@jucerasoli)
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py1san retweeted
AMSAT (@AMSAT) profile picture
AMSAT@AMSATNov 1
ANS-305 AMSAT News Service Weekly Bulletins are now available. #amsat #hamr amsat.org/ans-305-amsat-news…
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Congratulations!
Roland Zurmely (@PY4ZBZ) profile pictureRoland Zurmely@PY4ZBZOct 31
RX EME with 10 elem. Yagi 15 dBi
Image from Roland Zurmely (@PY4ZBZ)
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Image from Calvo 😔 (@AnaliseDeCalvos)
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BY70-4 over Brazil
Image from Roland Zurmely (@PY4ZBZ)
Image from Roland Zurmely (@PY4ZBZ)
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BY70-4 over Brazil
Image from Roland Zurmely (@PY4ZBZ)
Image from Roland Zurmely (@PY4ZBZ)
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py1san retweeted
NASA JPL (@NASAJPL) profile picture
NASA JPL
@NASAJPLOct 30
Another successful fix ⏤ after 49 years and 16 billion miles! 🔧 Engineers recently turned off devices on Voyager 1 and substituted them with lower-power alternatives. Nicknamed the “Big Bang,” the energy-saving effort will allow the remaining instruments to operate longer.  ½
In a photo from the 1970s, engineers gather around one of the Voyager spacecraft before it was launched.

ALT In a photo from the 1970s, engineers gather around one of the Voyager spacecraft before it was launched.

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ASRTU-1 over Brazil
Image from Roland Zurmely (@PY4ZBZ)
Image from Roland Zurmely (@PY4ZBZ)
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ASRTU-1 over Brazil
Image from Roland Zurmely (@PY4ZBZ)
Image from Roland Zurmely (@PY4ZBZ)
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