Tag Archives: Ham Radio

Dec 23 2011

Last chance to hear ARISSat-1

Sergey Samburov RV3DR with ARISSat-1

Sergey Samburov RV3DR with ARISSat-1

The amateur radio satellite ARISSat-1 may have only a few more days to live before it re-enters Earth’s atmosphere. Ken GW1FKY reports it’s putting out a strong signal in the early evening.

On the AMSAT bulletin board Ken writes:

I again monitored and worked into ARISSat-1 during the earlier pass and the final one as it entered eclipse over here in Europe.

The early pass was a low angle from my QTH and screened by buildings so I was not able to access the satellite. However the FM downlink was quite reasonable and I did hear someone active on CW.

The final pass as it moved into eclipse was really remarkable and my downlink and the FM transmissions were booming in . The loudest that I have ever heard from the satellite, in addition I quickly monitored the CW portion and someone was booming in, I could not stay at that end of the band as I was trying to make schedule on SSB. Heard someone calling but not able to confirm whom it was as they were not easy to copy.

Ken was listening in the early evening which seems to be a good time to hear the satellite. The satellite is only operational when its solar panels are illuminated. You can get orbital predictions times by selecting ARISSat-1 on the online prediction tool at http://www.amsat.org/amsat-new/tools/

If you hear the satellite on 145.950 MHz FM, you can get a certificate. Depending on what mode you copied, send an e-mail with the information to:
tlmreport@arissat1.org
secretword@arissat1.org
sstvreport@arissat1.org

Details at http://www.southgatearc.org/news/august2011/ arissat_1_reception_certificates.htm

There is also a CW contest if you send in 5 calls heard on the 145.920 MHz CW transmission of notable AMSAT people of the past & present email them to cwreport@arissat1.org

ARISSat-1 CW Contest http://www.uk.amsat.org/2011/10/10/arissat-1kedr-team-announces- cw-contest/

Catch the Last ARISSat-1 Telemetry http://www.uk.amsat.org/2011/11/09/catch-the-last-arissat-1-telemetry/

Get your colour ARISSat-1 Frequency Guide http://tinyurl.com/4t497t2

ARISSat-1 http://www.arissat1.org/

Dec 20 2011

PW-SAT on BRITE TV

PW-Sat with antennas deployed

PW-Sat with antennas deployed

The Polish amateur radio satellite PW-SAT built by students at the Warsaw University of Technology was featured on BRITE TV.

The Internet TV channel BRITE TV, covers the construction of the first Polish scientific satellites BRITE-PL 1 – Lem and BRITE-PL 2 – Hevelius which will be part of the BRITE constellation. Sometimes the TV channel covers other topics related to space technology.

Episode 14 talks about the CubeSat PW-SAT, built by students of Warsaw University of Technology working with the Space Research Centre PAS, due to be launched on Vega at the end of January.

PW-SAT carries a single channel transponder that will operate in a similar way to the amateur satellite AO-16. The uplink on 435.020 MHz will be FM and the downlink on 145.900 MHz will use the BPSK telemetry beacon transmitter to produce Double Sideband (DSB) that can be received on an SSB radio.

Watch BRITE-TV – Episode 14 – PW-SAT (in Polish)

PW-SAT Blog http://ska.meil.pw.edu.pl/pwsat_blog_pl/?lang=en

PW-Sat to launch in January http://www.uk.amsat.org/2011/12/15/pw-sat-to-launch-in-january/

For more information on PW-Sat in Google English see http://tinyurl.com/CubeSatPW-Sat

BRITE Constellation http://www.univie.ac.at/brite-constellation/

BRITE-PL in Google English http://tinyurl.com/BRITE-PL

AMSAT-UK publishes a colour A4 newsletter, OSCAR News, which is full of Amateur Satellite information.
Free sample issue at http://www.uk.amsat.org/on_193_final.pdf
Join online at http://tinyurl.com/JoinAMSAT-UK

Dec 18 2011

Space Station School Contact Video

A video has been released of the contact between ISS commander Daniel C. Burbank KC5ZSX and students at Hirano Elementary school, Kobe City.

Watch ARISS ham radio contact with Hirano branch of Kobe Youth Nurturing Council, Kobe-city

Further information: http://www.southgatearc.org/news/december2011/ariss_event_1212.htm

Amateur Radio on the International Space Station (ARISS) http://www.ariss.org/

Dec 17 2011

From OSCAR 1 to Mars and Beyond

A video of the presentation about Amateur Radio Space Communications given by Mario Lorenz DL5MLO to hackers at the Chaos Communication Camp 2011 is now available.

The talk  was titled ‘From OSCAR 1 to Mars and beyond – Amateur Space Exploration – The last 50 years, now, and the future’ and the YouTube description reads:

Radio amateurs have been building and operating satellites for almost fifty years now, and we are aiming for more. In this talk, I’ll present who AMSAT is, what we have achieved in the last fifty years, and what we are working on now.

Back in the 1960’s, radio amateurs seized the opportunity of launching a satellite into space. It would not be the only one; we are approaching OSCAR 70 now. Building satellites has always been challenging and involves using technology in creative ways. I’ll cover some of the more fascinating cases, including some lessons learned during the process. In addition to the satellites in earth orbit, we are also aiming for Mars, and I’ll show what are doing to get there.

Watch From OSCAR 1 to Mars and beyond – CCCamp 2011

Hackers Plan Space Satellites http://www.uk.amsat.org/3172 

London Hackspace Project: Hoxton Space Centre http://wiki.london.hackspace.org.uk/view/Project:Hoxton_Space_Centre

London Hackspace work on HackSat1 http://www.uk.amsat.org/2482

The DIY Magic of Amateur Radio video http://www.uk.amsat.org/3158

Dec 17 2011

AMSAT-India Linear Transponder

AMSAT-India 435-145 MHz Linear Transponder

AMSAT-India 435/145 MHz Linear Transponder

At Hamfest India (HFI) 2011, held in Kochi Dec 10-11, a presentation was given on a new Indian linear transponder and a CubeSat communications system.

This was the largest gathering of radio amateurs in India so far. Radio Amateurs and SWLs from all over the country and invited guests from other countries enjoyed the two-day event.

AMSAT-India gave several presentations at the event, among them was one by Ganesan Namachivayam KJ6LRR in which he described a satellite 435/145 MHz linear transponder with a bandwidth of 50 kHz and capable of 1-3 watts PEP output. AMSAT-India plan to develop a smaller linear transponder for CubeSats.

AMSAT-India CubeSat

AMSAT-India CubeSat

Ganesan also described a CubeSat communications system comprising a 435 MHz half-duplex narrow‐band FM transceiver supporting a data rate of 1200-9600 bps. The transmitter produces 1 watt output and can also operate as a Morse Code beacon.

Other presentations included:

  • Real Time Tracking by Mani VU2WMY
  • Working with LEO Sats by Dr. Raveendranath VU2RVJ
  • Telemetry Decoding by Nitin VU3TYG

The slides from the AMSAT-India presentations are at
http://amsatindia.org/presentations/HFI-2011/AI-HFI2011.pdf

Hamfest India (HFI) 2011 http://www.hamfestindia2011.com/

AMSAT India http://www.amsatindia.org/

Dec 16 2011

Amateur Radio Satellites Approach Launch

Amateur radio CubeSats and ALMASat-1 being prepared for launch

The integration of Vega’s first, second and third stages is now complete at ESA’s Spaceport at Kourou in the Caribbean. ESA say the new rocket is moving full speed ahead towards its maiden flight at the end of January.

Vega will carry seven amateur radio satellites, ALMASat-1 and six Cubesats. The primary payload is LARES (Laser Relativity Satellite), a passive satellite with laser mirrors for the study of the Earth gravitational field and general relativity measurements (Lense-Thirring effect).

By the end of December, the six CubeSats, ALMASat-1 and LARES will be ready and enclosed in the fairing, well in time for the launch.

PW-Sat to launch in January

Vega to Launch Amateur Radio Satellites

Vega moves closer to its first liftoff 

OSCAR News is published quarterly by AMSAT-UK. Download a free sample issue here join here