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.

Shi Jian S-Band downlinks

Recent radio observations coordinated in the #hearsat IRC chatroom have identified the downlinks for all Shi Jian 6 satellites, as well as the lone Shi Jian 7, and Shi Jian 11.

UHF-Satcom.com twitter feed

UHF-Satcom.com now has a twitter feed at http://twitter.com/UHF_Satcom - this is for general satellite monitoring related info items etc.

Yaogan S-Band downlinks

#hearsat IRC channel members have been busy searching for and updateing frequency info for s-band satellites, having now catalogued around 190 satellites.

STS-130 : Endeavour heard on 259,7 during deorbit preps


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Space Shuttle Endeavour (STS-130) heard over Europe on 259,700 MHz AM talking to Houston while prepairing for the deorbit burn to KSC. (22.02.10 at ~01:50 GMT)

RX reception; tracked 6 Element cross yagi -> Icom IC-R7100 -> rfspace SDR14

Regards, Nils

Noaa-19 / wxtoimg : New Thermal Sensor

Noaa-19 / wxtoimg : New Thermal Sensor

New thermal sensor function in WXtoIMG available ! Check: http://www.wxtoimg.com

APT Image recorded over Europe from Noaa-19 at 12:09 GMT; 22.03.2010 on 137,100 MHz FM.

Regards, Nils

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


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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

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