Logo

Satellite Internet Forum.
Please note that this forum is now READ ONLY and closed for login and changes
The new forum is here Space and Satellite Communications forum

Welcome, Guest.
Welcome to this satellite broadband discussion forum.  Wherever you are and whatever your problem we are here to help each other. Connecting to the internet via satellite is not always easy but is critically important to those in remote places or with poor terrestrial infrastructure.  Both service providers and customers are encouraged to contribute.  Read the Forum rules.
      Satellite internet forum          

ISEE-3 Reboot recovery : A nice story indeed

(Read 2598 times)
Oasis Networks
Ex Member


Jun 15th, 2014 at 3:37pm  
Zombie ship coming back home from space graveyard Smiley

http://www.nytimes.com/2014/06/15/science/space/calling-back-a-zombie-ship-from-...
---
Google images added by forum admin:
...
Back to top
« Last Edit: Aug 21st, 2015 at 10:06am by Admin1 »  
 
IP Logged
 
Alphaco
Ex Member


Reply #1 - Jul 19th, 2014 at 10:09pm  
..and the story, said to be finished on July 9, still goes on!
Read on here:

http://www.themarysue.com/isee3-satellite-engines-fire/

Go, zombie, go!

...
telemetry is here: http://isee3.p3s.nl/

almost-live news: https://twitter.com/ISEE3Reboot

Stay tuned  Wink
Back to top
« Last Edit: Feb 4th, 2016 at 10:00am by Admin1 »  
 
IP Logged
 
Admin1
YaBB Administrator
*****
Offline


Personal text from: Profile,
Options, Top line

Posts: 844
Reply #2 - Jul 19th, 2014 at 10:45pm  
Many thanks Alphaco for telling us about this.
Well done to all concerned. Any idea what antenna they are using ?

Best regards, Eric
Back to top
 
WWW  
IP Logged
 
Alphaco
Ex Member


Reply #3 - Jul 19th, 2014 at 11:41pm  
The ISEE-3 Reboot team in the defunct McDonald's (now called McMoon's) uses a link to Arecibo, where voluntary Arecibo staff manually switch a amsat-DL (German sat radio hams)-built power amplifier on and off.

Details here: http://www.planetary.org/blogs/guest-blogs/2014/how-to-transmit-to-isee-3.html

Receive signal is now something beyond 32dB signal to noise in Arecibo, and the guy who posted the FFT display uses just a one meter grid dish looking much like the cheapo Wifi link gear.

...

Another guy uses some other junk: twitter.com/PA4DAN/status/489031930466537472/photo/1

...
...


see also: https://twitter.com/uhf_satcom/status/490590289581850625

Maybe you have a big enough dish, 2.4GHz LNA and an analyzer to see it yourself (soon), but I don't have coordinates to point to.
update: yes i have them: here they are - don't ask me how to read these for the moment: http://spacecollege.org/isee3/updated-ephemeris-for-isee-3-at-jpl-horizons.html

...Since I read this topic first a few days ago, I found today that I was light-years behind already  Smiley

--
images made to display above by forum admin
Back to top
« Last Edit: Feb 4th, 2016 at 9:56am by Admin1 »  
 
IP Logged
 
Alphaco
Ex Member


Reply #4 - Jul 20th, 2014 at 7:25am  
An orbit diagram (pause the video at the end to have a more precise view): http://www.space.com/25704-probe-launched-in-1978-coming-close-to-home-but-we-ca...

I have to grab that Amsat-downconverter of mine, one of my 90cm dishes and the 4-turn helix and try to trim the LO, or see if it has any useful gain at 2.2GHz, because we could still just have a Earth fly-by and nothing else. 
Back to top
 
 
IP Logged
 
Alphaco
Ex Member


Reply #5 - Aug 11th, 2014 at 7:40am  
My 2.4GHz downconverter mods having failed (no suitable quartz available in time, and I now have the thing in a state where it needs a good analyzer to trim it back to where it was, if at all worth it, 2.4 GHz being too much used by Wifi, Microwave ovens, etc.
Meanwhile ISEE-3 has flown past Earth and Moon, and lacking nitrogen pressure in the relatively full fuel tanks, no trajectory correction manoeuver could be done, so it is off for another 15-year ride around the sun.

See here http://spacecraftforall.com/ - a nice animated website about the craft (no Chrome install needed, really), and here: https://twitter.com/ISEE3Reboot for current status.

Thanks to Paul Marsh and others on the ICR #hearsat channel for all the advice. I'll be "more ready" for the next signals, hopefully.
I'll go back to my 1.8m TVro sat dishes for UK expats for the moment.

Back to top
 
 
IP Logged