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Steve Bible
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re: Chips in Space: The importance & challenges of collaboration
Steve Bible   8/1/2011 5:41:19 PM
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Gould Smith, WA4SXM reported that the test of the ARISSat-1 satellite transmissions this weekend went well. Over 50 reception reports from 20 different countries were received.

Steve Bible
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re: Chips in Space: The importance & challenges of collaboration
Steve Bible   8/1/2011 6:13:34 PM
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ARISSat-1 is scheduled to be deployed from the International Space Station (ISS) this Wednesday August 3rd (Morning in the US). The extra-vehicular activity (EVA) schedule is (all times UTC): 1430 : Hatch Open 1446 : Egress ARISSat-1 and secure to airlock ladder 1452 : Remove ARISSat-1 solar panel covers 1507 : Translate to deploy site, activate ARISSat-1 PWR, TIMER1 and TIMER2 switches, verify LEDs on, and deploy The deployment will be broadcast on NASA TV - http://www.nasa.gov/multimedia/nasatv/index.html Russian Spacewalkers to Move Cargo Boom, Deploy Ham Radio Satellite - http://www.nasa.gov/mission_pages/station/expeditions/expedition28/russian_eva29.html

agk
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re: Chips in Space: The importance & challenges of collaboration
agk   8/2/2011 12:37:57 PM
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1961 i was 5 years boy playing toys. Oscar 1 in the space in 1962 ! Those days all popular with vacumtubes triode,tetrode,pentode. Solid state was rare.Those instruments in the picture all heavy and rock solid.real strong design and fabrication work!

wf6jhamatlarge
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re: Chips in Space: The importance & challenges of collaboration
wf6jhamatlarge   8/2/2011 11:40:11 PM
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I was in the beginning of my Amateur Radio "life" sputnik and OSCAR-1 were thrilling. Today, still an active Ham, I have my satellite antennas ready for ARISSat-1. Sounded great on the test, looking forward to some QSOs and pictures. Hat's off to the ARISSat Team, well done. de WF6J



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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