Last Chance for ARISSat-1 is coming up!

Did you know that you’re running out of time if you’ve been planning on working ARISSat-1? Why do you ask? Well, it’s estimated to be re-entering in January or February 2012. So now is the time to use the on board repeater or get an SSTV pic.

An image from the ARISSat-1 SSTV

Photo Courtesy of AMSAT

The satellite was deployed back in August and since then has lost about 60km of altitude, and is estimated to be losing 1.5km per day. This is due to increased drag on the craft from increased solar activity on the atmosphere. From Southgate ARC:

The orbit period changes about 30 seconds per day, and that will increase steadily. Be certain to update your tracking program Keps from Space-Track or CelesTrak before each pass. They issue revised versions 3-5 times daily.

That’s a lot of revisions, so make sure to stay on top of them if you want to work it. Plus any telemetry data the engineers can get from the satellite will help in future flights. If you want more information on ARISSat-1 feel free to check the related stories below or you can check out these stories done here for more info.


Rich Gattie, KB2MOB, is a regular contributor to and writes from New York, USA. Contact him at [email protected].

One Response to “Last Chance for ARISSat-1 is coming up!”

  • Alan WA4SCA:


    Thanks for spreading the word about ARISSat-1!


    Now, a much sadder announcement in the last hour:

    It is with a heavy heart I report that AO-51 has ceased transmission and is not responding to commands. The last telemetry data indicated that the third of six batteries was approaching failure to short, and observations indicate the voltage from three cells is insufficient to power the UHF transmitters. The IHU may continue to be operative. Initial tests with the S band transmitter were also not positive, although more attempts are in order. We have tried leaving the satellite in an expected state where if voltages climb high enough, the 435.150 transmitter may possibly be heard.

    The command team will regularly attempt communications with the satellite over the coming months (and years). There is always the possibility that a cell will open and we could once again talk to our friend while illuminated. Thanks to all who helped fund, design, build, launch, command, and operate AO-51. It’s 7 year mission has been extraordinary. Please support AMSAT’s Fox-1 project, and other AMSAT projects worldwide with your time and money.

    For the AO-51 Command Team,

    73, Drew KO4MA
    AMSAT-NA VP Operations

Leave a Comment

Subscribe FREE to's
Amateur Radio Newsletter
News, Opinion, Giveaways & More!

Join over 7,000 subscribers!
We never share your e-mail address.

Also available via RSS feed, Twitter, and Facebook.

Subscribe FREE to's
Amateur Radio Newsletter

We never share your e-mail address.

Do you like to write?
Interesting project to share?
Helpful tips and ideas for other hams?

Submit an article and we will review it for publication on!

Have a ham radio product or service?
Consider advertising on our site.

Are you a reporter covering ham radio?
Find ham radio experts for your story.

How to Set Up a Ham Radio Blog
Get started in less than 15 minutes!

  • Matt W1MST, Managing Editor

Sign up for our free
Amateur Radio Newsletter

Enter your e-mail address: