This is the new web site for Hearsat.org. HearSat was originally created as a mailing list and website in November 1995. The idea was conceived by John Corby (VA3KOT) in Canada and the late Ivan Artner (HA5TS) in Hungary. HearSat was modeled after the SeeSat mailing list and website but was targeted towards satellite enthusiasts who are interested in monitoring radio signals from satellites. The web site and mailing list were originally hosted by Grove Enterprises, publishers of Monitoring Times magazine until RA Labs, owned by Bob Arnold (N2JEU), stepped forward to generously offer hosting services. HearSat remains indebted to Bob for his continued support. The mailing list is now hosted on the QTH network (www.qth.net) owned by Al Waller (K3TKJ). The content of Hearsat.org is dynamically managed by a group of active satellite monitoring enthusiasts. If you are reading this site and what to add some content, please register as a user, then go to the forums and post in the appropriate place. There is an active IRC channel where you can chat to other satellite buffs in real time, you can get to this by using the 'Live Hearsat Chat Room' link in the left hand menu bar.

AMSAT-UK Colloquium 2009 - Update (new Guilford venue)

Submitted by gonzo on Fri, 29/05/2009 - 23:08.

The venue for this years event has been changed to the Holiday Inn Hotel at Guildford.

Saturday July 25th and Sunday 26th July.

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Meteosat-7 APT Image

Submitted by Nils on Mon, 27/04/2009 - 20:03.
Meteosat-7 APT Image

Received APT Image from Meteosat-7 at 57°E on 1691,007 Mhz. FM around 1400 UTC on 25.04.09.
Regards, Nils

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STS-119 Space Shuttle Discovery working Houston during ascent


0:32 minutes (190.29 KB)

STS-119 Space Shuttle Discovery working Houston during ascent into Orbit to the ISS. (While passing over Europe.)
259,700 Mhz. AM.

Regards, Nils

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WGS-2 Launch scrubbed

Submitted by pjm on Wed, 18/03/2009 - 08:49.
According to http://spaceflightnow.com/atlas/av016/status.html the launch attempt of WGS-2 was scrubbed due to a liquid oxygen leak. WGS-2 is slated to be positioned at 60 degrees East, and will offer S-Band, X-Band and Ka band downlinks.
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Inmarsat std-C decoder

Submitted by r00t on Tue, 17/03/2009 - 21:42.
After year of development, first version of Inmarsat std-C/TDMA decoder is finally done!
To learn more and download demo version, visit WWW.INMARSATDECODER.COM.
You can join us at #hearsat channel on irc.starchat.com.
We are testing the decoder and sharing results from around the globe online.
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Noaa-19 APT Picture

Submitted by Nils on Sat, 07/02/2009 - 13:26.
Noaa-19 APT Picture received on 137,9125 MHz. over Europe. Pass at around 13:10 UTC, 07.02.09.
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AMSAT-UK Colloquium 2009 - July 24-26th

Submitted by gonzo on Wed, 04/02/2009 - 23:20.

This is the annual UK gathering for satellite enthusiasts.
The primary focus for this event is Amateur satellite design and operation, but there are many presentations and demonstrations of interest to Hearsat members.
Keynote speakers have included Dr. Collin Pillinger (Beagle 2), Dr Rob Gowen (MoonLITE), Pat Norris (Surveillance Satellites in War and Peace"). See the AMSAT-UK website for full details of past Colloquium.
www.uk.amsat.org

Dates for 2009 are, Friday July 24th to Sunday 26th July, but at a brand new venue – the University of Manchester campus right in the centre of the city.

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OMID telemetry decoded!

Submitted by pjm on Wed, 04/02/2009 - 21:04.

Following analysis of the 465MHZ downlink from OMID, Iran's home-built satellite, ASCII text has been recovered. The signal is FSK modulated with 600Bd Manchester => 300Bd real data rate. Each frame is 600 bits long, and so far Mission Elapsed Time has been found along with the ASCII message. Thanks go to r00t for analysis and decoding of this telemetry.

omid.jpg

Omid's UHF downlink has two modes, mode-1 is a 1KHz 'test signal' and mode-2 is the telemetry. FFT's of each mode can be seen below;

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New UCS Satellite data-base published today.

Submitted by pjm on Tue, 03/02/2009 - 20:12.

The Union of Concerned Scientists has today published a new version of its satellite database which included the following:

*  a reorganization of the orbital information into columns with "Class of Orbit," e.g., LEO, and "Type of Orbit," e.g.,
    Sun-Synchronous. All GEO longitude information has been moved to the column "Longitude of GEO"
 *  The addition of 20 satellites
 *  The deletion of 14 inactive satellites
 *  The addition of and corrections to some satellite data
 *  The updating of the orbital information for the GEO satellites

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JAXA / Selene orbit info

Submitted by pjm on Tue, 03/02/2009 - 20:08.

The JAXA space agency has put a lunar orbiter tracking page up on the net. It can be accessed at http://odweb.tksc.jaxa.jp/oddse/main.jsp and allows the actual position of the orbiter to be seen with respect to the moon and the Earth. This will no doubt, help when trying to locate the S-Band or X-Band signals from this space-craft.

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