Let's give it a try?

[Stephen Arbogast]

I  collected a  screen cast  file on Ubuntu 26.04  of  almost  20 hours of data collection      using  Ted Cline's   ezCol  for  AirSpy  R2....    It is  very  large about 114.  GB    Do you  think it  will  work if   I  try to upload it  here?

I  was using   10 Meg  samples per sec   per    Wolfgang's    advice about   the  radiometer   equation   which is  the     Central  Limit   Theorem.  So  far  I have  not   run  Ted Cline's ezCon  software.   Any   thoughts?

Stephen

[edhar...@gmail.com]

File upload policies set by Groups.IO are 8MB on an attachment.  We do not have file storage with our plan.

 

If you’ve got access to:

• Office 365, you’ve got 1TB of sharable space.  (I’ve been using that for some pulsar experiments with others.)
• Dropbox
• Snail-mailing a thumbstick.
• ???

 

114 GB is still a lot of data.

 

Ed

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[Ayushman Tripathi]

Hi Stephen,

A 20-hour screencast will compress a lot since screen recordings are mostly static frames. On Ubuntu, the easiest is HandBrake (in the Software Center or sudo apt install handbrake). Open the file, pick the H.265 preset, set the quality slider around RF 26, and export. Should shrink it massively.

Or from the terminal with FFmpeg:

ffmpeg -i yourinput.mkv -c:v libx265 -crf 28 -preset slow -c:a aac -b:a 128k output.mp4

Both re-encode to H.265, usually much smaller for screen content.
Then you can try uploading it to https://zenodo.org/ 

Thanks.

[Ayushman Tripathi]

Here's a video I made from the July 2 data: https://www.youtube.com/watch?v=PivJPgpTvhU

I'll also be making a few more soon, one showing how I improved HackRF performance by shielding it (got some good results) and a walkthrough of my 2.4 m and 1 m radio telescope setups.

I also got a Ku-band PLL LNB to test with a small Ku TV dish for radio astronomy, I'll test it on Sun soon, since handling big dishes isn't easy.

Thanks!

[Alex P]

Hello Ayushman,

Review your system parameters : nearly all frames show a clipped H line signal

Regards,

Alex

[b alex pettit jr]

12-24 hrs @ Dec +20 deg

17-23 Hrs @ Dec + 20 deg

Alex

[Ayushman Tripathi]

Hi Alex,

Thanks for finding the bug! That currently seems to be a bug in the median filter, I'm fixing it and will reupload. I made this "YouTube dashboard panel script" yesterday, so it still has a few bugs, and it seems I missed this one.

Thanks.

[Ayushman Tripathi]

Hi Alex, here's the fixed video: https://www.youtube.com/watch?v=AmppY0N5e38

I removed the median filter that was making the peaks flat, so it's just the raw calibrated dB now.
Would appreciate you taking a look.

Thanks

[b alex pettit jr]

Yes ! That one looks Great  

Cheers,

Alex P

===================

[andrew....@googlemail.com]

Absolutely gorgeous pictures.

Andy

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[Mike Otte]

Very Nice! Ayushman,

You brought the views together and labeled them so everybody can appreciate them.

BR

Mike

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Mike Otte W9YS

[Stephen Arbogast]

I  recorded a  screen cast of my original  20 hour  screen  cast sped up  but  still too large to upload here.   

Maybe  I can put  together something for You Tube.  like  Ayushman  did   which  is  very cool!

Stephen