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.

STS-130 S-Band phase modulated downlink

STS-130 s-band down link captured on 2217.500MHz directly from the orbiter. The FFT screen shot shows the typical modulation format in use. Sound files recovered from this down link have been posted to http://www.uhf-satcom.com/sounds/ The BPSK down link from the orbiter was captured with an RF-Space SDR-IP ethernet radio.

NEW AOR AR5001 receiver

NEW AOR AR5001 receiver

New AOR receiver, presumably replacing the AR5000. This one covers 40kHz to 3150MHz - nice! Its been suggested that the AOR AR5001U List Price is $3799.00. My guess is that the spec is similar to the AR2300 since it would not make economic sense to build nearly identical RF units for 2 separate receivers - pure speculation of course ;-)

ADS-B receiver project by Vinculum

A group of people at  have for some time now been analyzing ADS-B specs, and the construction of commercial ADS-B units (AirNav & Kinetics). Under coordination of "Vinculum" they are now trying to make their own version. From the information released on the website there is a working prototype at this moment giving very good results. If and when this project comes to an end, the fruit of this effort will be sold as "kits" with PCB, filters etc for a two digit figure (euro)!

1090 Mhz ADS-B Receiver project info page. Unfortunately the whole discussion and website is in German. The developer needs to know how many people would be interested to buy such a unit, to place the proper orders for the components etc, and also help to keep the per-unit-price down. If you feel you want to experiment with ADS-B send him an email: webmaster_removethis_@jetvision.de telling him you would be willing to purchase one (or more). There are already twenty people on the list.

STS-128 Space Shuttle Discovery working Houston during ascent


0:15 minutes (93.25 KB)

Space Shuttle Discovery heard(from Europe) on 259.700 MHz AM working Houston during Ascent into it´s orbit to the ISS. (Mission STS-128.)

Regards, Nils

station

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

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

Saturday July 25th and Sunday 26th July.

Meteosat-7 APT Image

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

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

WGS-2 Launch scrubbed

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.

Inmarsat std-C decoder

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.
Syndicate content