ISS SSTV received on SUWS WebSDR

ISS SSTV image received by Paulo PV8DX

ISS SSTV image received by Paulo PV8DX

On Saturday, September 6, at 1000 GMT Paulo PV8DX emailed the news that the International Space Station (ISS) Slow Scan Television (SSTV) on 145.800 MHz FM had been active again.

At the end of the passage (ISS) in northern Brazil where I live. I heard the sound of early SSTV. So I went to the WEBSDR in your area [the SUWS WebSDR near London, UK] and I got two images.

The ISS has been transmitting photographs devoted to the life and work of the first cosmonaut Yuri Gagarin. They were sent in the PD180 SSTV mode with additional voice commentary.

On August 27, 2014 a test of the ISS Slow Scan Television (SSTV) experiment MAI-75 using the Kenwood TM-D710 transceiver and a new cable took place. Although a carrier was successfully transmitted on 145.800 MHz no SSTV audio tones were heard. It appears that the earlier problem has now been rectified. https://amsat-uk.org/2014/08/23/iss-sstv-august-27/

ISS SSTV received by Jan van Gils PE0SAT Sept 26. 2014 at 14:02 GMT

ISS SSTV received by Jan van Gils PE0SAT Sept 26. 2014 at 1402 GMT

The Kenwood TM-D710 was delivered to the ISS in the summer of 2012. The original TM-D700 in the Russian ISS Service Module had been experiencing problems with the PA after giving many years service in space, see ARISS minutes for March 2013. It is thought the Kenwood TM-D710 is set to run at just 5 watts output because convection cooling doesn’t work in zero gravity. http://www.ariss.org/meeting-minutes/archives/03-2013

David Barber G8OQW received some good images in Chelmsford, Essex which can be seen on the AMSAT-UK Facebook page.

Listen to the ISS and amateur radio satellites online using the SUWS VHF/UHF/Microwave WebSDR https://amsat-uk.org/2014/08/15/suws-websdr-moves-to-new-site/

ISS Fan Club provides status and tracking information http://issfanclub.com/

How to hear the ISS https://amsat-uk.org/beginners/how-to-hear-the-iss/

Paul Turner G4IJE, co-developer of the SSTV PD modes, says regarding the PD180 mode: “Don’t forget to either enable “Always show RX viewer” or use the “Picture viewer” (magnifying glass icon) to show the picture at its real resolution of 640 x 496. If you just view as normal you will only see 320 x 248 resolution, which kind of defeats the object of using a high resolution mode.”

Tony Falla VK3KKP commented “I received a good picture from ISS on my iPad mid-Saturday evening [AEDT] on 145.800 MHz just using the microphone next to the rig.”

The APRS digipeater in the European Space Agency ISS Columbus module continued to be in operation on 145.825 MHz during the SSTV transmissions.

Watch a video of ISS SSTV reception by Dmitry Pashkov R4UAB

All you need to do to receive SSTV pictures direct from the space station is to connect the audio output of a scanner or amateur radio transceiver via a simple interface to the soundcard on a Windows PC or an Apple iOS device, and tune in to 145.800 MHz FM. You can even receive pictures by holding an iPhone next to the radio’s loudspeaker.

ISS SSTV received by Fabiano Moser CT7ABD on Sept 6, 2014 at 0910 GMT

ISS SSTV received by Fabiano Moser CT7ABD on Sept 6, 2014 at 0910 GMT

The ISS puts out a strong signal on 145.800 MHz FM and a 2m handheld with a 1/4 wave antenna will be enough to receive it. The FM transmission uses the 5 kHz deviation which is standard in much of the world.

Many FM rigs in the UK can be switched been wide and narrow deviation FM filters. For best results you should select the wider deviation filters. Handhelds all seem to have a single wide filter fitted as standard.

On Windows PC’s the free application MMSSTV can be used to decode the signal, on Apple iOS devices you can use the SSTV app. The ISS Fan Club website will show you when the space station is in range.

For more on Slow Scan Television SSTV, see this article SSTV – The Basics
http://www.essexham.co.uk/sstv-the-basics

How to be successful with the ISS Slow Scan Television (SSTV) imaging system
http://www.marexmg.org/fileshtml/howtoisssstv.html

Free MMSSTV Slow Scan TV software http://hamsoft.ca/pages/mmsstv.php

iOS SSTV App https://itunes.apple.com/gb/app/sstv/id387910013

IZ8BLY Vox Recoder, enables you to record the signals from the ISS on 145.800 MHz while you’re away at work http://antoninoporcino.xoom.it/VoxRecorder/

ARISS Slow Scan TV (SSTV) Blog and Gallery http://ariss-sstv.blogspot.co.uk/

Information on the MAI-75 SSTV experiment
http://www.energia.ru/eng/iss/researches/education-26.html

NEXUS CubeSat Will Have Mode-J Transponder

JAMSAT stand at the Tokyo Ham Radio Fair August 2014

JAMSAT stand at the Tokyo Ham Radio Fair August 2014

The Japan AMSAT Association (JAMSAT) and students at the Nippon University are jointly developing a CubeSat called NEXUS which will have a 145 to 435 MHz (Mode-J) transponder and a 38 kbps data downlink.

JAMSAT CubeSat Board

JAMSAT CubeSat Board

Nippon University students have previously developed the SEEDS and SPROUT satellites. NEXUS is an achronym of “Next Education X (cross) Unique Satellite”, it will be 1U CubeSat with a mass of between 1 and 1.5 kg.

The NEXUS team hope to:
● Provide amateur radio communications via the 145/435 MHz transponder and SSTV
● Download pictures from the 640×480 pixel camera
● Operate the data downlink at 38400 bps QPSK
● Compare the performance of the data downlink when using AFSK, GMSK and QPSK modes

A launch opportunity has not yet been identified.

NEXUS website in Google English http://tinyurl.com/NEXUS-Satellite

NEXUS Blog http://tinyurl.com/NEXUS-Sat-Blog

JAMSAT in Google English http://tinyurl.com/JAMSAT

ISS Slow Scan TV on August 27

RS0ISS SSTV 20131029-1121Z received by Dmitry Pashkov UB4UAD

RS0ISS SSTV 20131029-1121Z received by Dmitry Pashkov then UB4UAD

A test of the Slow Scan Television (SSTV) experiment MAI-75, callsign RS0ISS, took place on the International Space Station (ISS) on Wednesday, August 27 between 1100-1300 GMT on 145.800 MHz FM. Although a strong carrier was heard there were no reports of SSTV tones being received.

The ARISS SSTV Blog Aug 27 says: The SSTV transmissions occurred on schedule and even occurred well after the planned termination time of 13:00 UTC (after 17:00 UTC). The new cable appears to have solved the constant carrier issue but now the audio from the program is not being transmitted. The end result for the day was no images but several well timed carriers that lasted for 180 seconds.

The ARISS SSTV Blog Aug 25 says: After a long hiatus due to hardware issues, the Russian team will try sending SSTV images on Aug 27 from 11:00-13:00 UTC using the Kenwood D710 and a new cable. The transmissions will be on 145.80 MHz and the intended mode is PD180. The interval between transmissions should be about 3 minutes. The images are being planned to be sent for one full orbit during this time period. Regions along the ground track include Europe, Central and Southeast Asia, Eastern Australia and New Zealand, Central South America and then Europe again.

Paul G4IJE, co-developer of the SSTV PD modes, says: If the ISS really does use PD180 mode as reported, don’t forget to either enable “Always show RX viewer” or use the “Picture viewer” (magnifying glass icon) to show the picture at it’s real resolution of 640 x 496. If you just view as normal you will only see 320 x 248 resolution, which kind of defeats the object of using a high resolution mode. Hopefully the image capture on the ISS is at high resolution.

Yuri Gagarin

Yuri Gagarin

A Google English translation of the ISS work plan says: “On Gagarin from Space”. Open gear with ISS RS by amateur radio link to ground receiving stations amateurs around the world images of photographs devoted to the life and work of the first cosmonaut Yuri Gagarin.

The Kenwood TM-D710 was delivered to the ISS in the summer of 2012. ARISS minutes for March 2013 note that: Sergey and the team did some tests including swapping antennas between the D-700 and the D-710, and with both configurations, there was a weak signal with the D-700. The power amplifier appears to be the problem. It seems only the exciter is working. Also, the D-710 has no mike since it was to be used with non-voice modes, and the mike for the D-700 has been modified and can’t be used with the D-710. We will work with our Russian colleagues to solve these issues.

The very strong carrier that was transmitted during the test on Wednesday, August 27 confirmed that the D-710 was radiating power successfully. Overheating issues (convection cooling doesn’t work in zero gravity) meant that the old D-700 transceiver was always run on the lowest power setting – 5 watts. It is presumed that a similar power level was used for the SSTV test.

All you need to do to receive SSTV pictures from the space station is to connected the audio output of a scanner or amateur rig via a simple interface to the soundcard on a Windows PC or an Apple iOS device, and tune in to 145.800 MHz FM. You can even receive pictures by holding an iPhone next to the radio’s loudspeaker.

The ISS puts out a strong signal on 145.800 MHz FM and a 2m handheld with a 1/4 wave antenna will be enough to receive it. The FM transmission uses 5 kHz deviation which is standard in much of the world.

Many FM rigs in the UK can be switched been wide and narrow deviation FM filters so select the wider deviation. Handhelds all seem to have a single wide filter fitted as standard.

Orbit for ISS SSTV on August 27, 2014 1100-1300 GMT

Orbit for ISS SSTV on August 27, 2014 1100-1300 GMT

On Windows PC’s the free application MMSSTV can be used to decode the signal, on Apple iOS devices you can use the SSTV app. The ISS Fan Club website will show you when the space station is in range.

Listen for the ISS SSTV transmissions online using the SUWS WebSDR, further details at https://amsat-uk.org/2014/08/15/suws-websdr-moves-to-new-site/

For more on Slow Scan Television SSTV, see this article SSTV – The Basics
http://www.essexham.co.uk/sstv-the-basics

How to be successful with the ISS Slow Scan Television (SSTV) imaging system
http://www.marexmg.org/fileshtml/howtoisssstv.html

Information on the MAI-75 SSTV experiment
http://www.energia.ru/eng/iss/researches/education-26.html

Free MMSSTV software http://hamsoft.ca/pages/mmsstv.php

iOS SSTV App https://itunes.apple.com/gb/app/sstv/id387910013

IZ8BLY Vox Recoder, enables you to record the signals from the ISS on 145.800 MHz while you’re away at work http://antoninoporcino.xoom.it/VoxRecorder/

ARISS Slow Scan TV (SSTV) Blog and Gallery http://ariss-sstv.blogspot.co.uk/

For real-time tracking and the latest status of amateur radio activity on the space station see the ISS Fan Club http://www.issfanclub.com/

Dmitry Pashkov R4UAB http://r4uab.ru/?p=7237

ISS Work Plan http://www.mcc.rsa.ru/plan.htm

Chasqui-1 deployment from ISS

Oleg Artemyev releases the Chasqui-1 CubeSat

Oleg Artemyev releases the Chasqui-1 CubeSat

On August 18, 2014 at 14:00 UT the Russia Cosmonauts on the International Space Station (ISS), Alexander Skvortsov and Oleg Artemyev, opened the hatches of the Pirs docking module and to start Extra Vehicular Activities (EVA).

Engineer Ing. Margarita Mondragon and Chasqui-1

Engineer Ing. Margarita Mondragon and Chasqui-1

One of their tasks was the deployment of the Peruvian satellite Chasqui-1, a research satellite designed to standard CubeSat dimension by the Peruvian National University of Engineering (Universidad Nacional de Ingenieria (UNI)) in collaboration with the Southwestern State University (SWSU) in Kursk.

Chasqui-1’s batteries were charged by the Russian Cosmonuats inside the ISS during August 14/15.The satellite was successfully deployed by Oleg Artemyev near the start of the EVA at 14:23 UT.

Chasqui-1 was developed with the intention of improving their satellite technology through the design and testing of a small satellite. Its facilities include two cameras, one in visible and the other in infra-red. Other facilities include communication in the amateur radio band and control systems for its power, thermal and embedded management of its components.

Peruvian CubeSat Chasqui-1

Peruvian CubeSat Chasqui-1

Chasqui-1 will provide a number of functions that include taking pictures of the Earth. From an academic perspective it will facilitate collaborations among various faculties and research centres of the university to train students and teachers with real world experience in satellites. It will also generate opportunities to work with other universities in the world which in turn will lead to technological advances in the aerospace industry of Peru.

The 437.025 MHz beacon (+/- 10 kHz Doppler shift) can transmit either 1200 bps AFSK AX.25 or 9600 bps GMSK. As of August 23 no signal from the beacon had been heard.

Chasqui-1 as a small dot against the Earth, seconds after Oleg Artemyev sent it spinning - Screenshot Jonathan McDowell

Chasqui-1 as a small dot against the Earth, seconds after Oleg Artemyev sent it spinning – Screenshot Jonathan McDowell

On August 19-20 there may be a relay of the Chasqui-1 signal transmitted from the ISS on 145.800 MHz FM using the callsign RS02S. This relay should provide a strong signal with reduced Doppler receivable even on handheld radios.

Listen for Chasqui-1 and the ISS online using the SUWS WebSDR, further details at
https://amsat-uk.org/2014/08/15/suws-websdr-moves-to-new-site/

Find out when you can hear the ISS and Chasqui-1 which is currently in close proximity at http://issfanclub.com/

Chasqui-1 http://www.chasqui.uni.edu.pe/eng.html

Facebook https://www.facebook.com/pages/Chasqui-1/253013641985

Twitter @chasqui1

R4UAB Chasqui-1 http://r4uab.ru/?p=7178

Watch Hand deployment from ISS of Peruvian satellite Chasqui-1