That's all pretty cool! Congrats to Paul and the VT folks!
John KG4AKV On May 6, 2016 6:35 PM, "Zach Leffke" zleffke@vt.edu wrote:
AHHHHHHHHHH...........
you beat me to the punch!!!!!!!!!!!!
We also received AO-73's signal via FO-29 today at the VTGS (we only got 6 packets!).
We did this as part of a class project for ECE-4644 Satellite Communications, and the students that were with me during the observation of the event received a half letter grade bump on their grade for the class project. The student project was to build a piece of simulation software that would predict when the chain events between the two birds would occur and to compute the doppler offset and link budget in one second time steps for each event in a two week period. I'm proud to say they not only predicted when the event would occur, they were SPOT ON in the doppler computation (from around +5 kHz to about +10kHz offset from center of FO-29's downlink here in Blacksburg VA).
Score for Amateur Radio supporting Students' Education!
And Congratulations Paul! If I'm not mistaken, this is a first ever in Amateur Radio satellite work, reception of a crosslink? Way to go!
-Zach, KJ4QLP
Research Associate Ted & Karyn Hume Center for National Security & Technology Virginia Polytechnic Institute & State University Work Phone: 540-231-4174 Cell Phone: 540-808-6305
On 5/6/2016 1:11 PM, Paul Stoetzer wrote:
Good afternoon,
I was able to decode 9 packets of telemetry from AO-73 via FO-29's transponder at 1647 UTC today. Signals were unusually strong as the satellites were close together, so I decided to try feeding my recording of the pass into the Dashboard.
See an image of the Dashboard and a screenshot from SatPC32 showing where the two satellites were at the time here:
https://twitter.com/PRStoetzer/status/728631296658944000
I was using just an Arrow antenna, High Sierra Microwave LNAA432 preamp, and an FT-817.
73,
Paul, N8HM _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb