ARISS News Release No. 22-08
ARISS News Release No. 22-08
Dave Jordan, AA4KN
ARISS PR
FOR IMMEDIATE RELEASE
ARISS Europe to Perform Special Digital SSTV Experiment
February 16, 2022—Amateur Radio on the InternationalSpace Station (ARISS) is planning for a special SSTV experiment. ARISS is thegroup that puts together special amateur radio contacts between students aroundthe globe and crew members with ham radio licenses on the International SpaceStation (ISS) and develops and operates the amateur radio equipment on ISS.
As part of its ARISS 2.0 initiative, the ARISSInternational team is expanding its educational and life-long learningopportunities for youth and ham radio operators around the world. ARISSSlow Scan Television (SSTV), which is the transmission of images from ISS usingamateur radio, is a very popular ARISS mode of operation. To expand ARISSSSTV capabilities, the ARISS Europe and ARISS USA teams plan to perform specialSSTV Experiments using a new SSTV digital coding scheme. For the signalreception, the software "KG-STV" is required, as available on internet.
We kindly request that the amateur radio communityrefrain from the use of the voice repeater thin this SSTV experiment on 20th ofFebruary 2022 over Europe.
This is a unique and official ARISS experiment. Wekindly request keeping the voice repeater uplink free from other voicetransmissions during the experiment time period. Also note that ARISS istemporarily employing the voice repeater to expedite these experiments and makea more permanent, more expansive SSTV capability fully operational on otherdownlink frequencies.
The first experiment in the series will utilize ARISSapproved ground stations in Europe that will transmit these digital SSTVsignals. These will be available for all in the ISS footprint when SSTVtransmissions occur. The first SSTV experiment is planned for 20 February2022 between 05:10 UTC and 12:00 UTC for five ISS passes over Europe. Please be aware that this event depends on ARISS IORS radio availabilities andISS crew support, so last-minute changes may occur.
To promote quick experimental SSTV investigations—tolearn and improve--the ARISS team will employ the ISS Kenwood radio in itscross-band repeater mode. The crossband repeater operates on a downlinkof 437.800 MHz. Each transmission sequence will consist of 1:40 minutetransmission, followed by 1:20 minute pause and will be repeated several timeswithin an ISS pass over Europe.
The used modulation is MSK w/o error correction. Forthe decoding of the 320 x 240 px image, the software KG-STV is required. The KG-STV software can be downloaded from the following link: "http://amsat-nl.org/wordpress/wp-content/uploads/2022/02/kgstv_ISS.zip"
The ZIP file contains the KG-STV program, aninstallation and setup manual, some images and MP3 audio samples for your firsttests as well as links for additional technical information about the KG-STVuse.
The members of the ham radio community youth and thepublic are invited to receive and decode these special SSTV signals.
Experiment reports are welcome and should be uploadedto "[email protected]"
More information will be available on the AMSAT-NL.org web page: "https://amsat-nl.org/?page_id=568"
(for the team: OliverAmend, DG6BCE)
-----
About ARISS:
Amateur Radioon the International Space Station (ARISS) is a cooperative venture ofinternational amateur radio societies and the space agencies that support theInternational Space Station (ISS). In the United States, sponsors are the RadioAmateur Satellite Corporation (AMSAT), the American Radio Relay League (ARRL),the ISS National Lab-Space Station Explorers, Amateur Radio DigitalCommunications (ARDC) and NASA’s Space communications and Navigation program.ARISS Europe is in close cooperation with the European Space Agency and itsnational space agencies, the space industry and the amateur radio memberassociations. The primary goal of ARISS is to promote exploration of science,technology, engineering, the arts, and mathematics topics. ARISS does this byorganizing scheduled contacts via amateur radio between crew members aboard theISS and students. Before and during these radio contacts, students, educators,parents, and communities take part in hands-on learning activities tied tospace, space technologies, and amateur radio. For more information, see www.ariss.org and www.ariss-eu.org.
Oliver Amend,DG6BCE (oliver.amend (at) gmx.de)
I'm curious as to why KG-STV was chosen for this activity, over something like EasyPal / HamDRM ? It's a FM repeater, anything that fits within the audio passband is going to be usable.
The KG-STV software appears to have been abandoned in 2010, is Windows only (please don't use WINE as an excuse here...) and there's not really enough documentation available to make a compatible decoder.
At least with HamDRM (or EasyPal - same modulation and protocol), there's more than one bit of software to decode it (EasyPal on Windows, and the open-source QSSTV on Linux).
73 Mark VK5QI
On Thu, Feb 17, 2022 at 2:55 PM David Jordan [email protected] wrote:
*ARISS News Release No. 22-08 *
*Dave Jordan, AA4KN *
*ARISS PR*
*[email protected] [email protected]*
*FOR IMMEDIATE RELEASE*
*ARISS Europe to Perform Special Digital SSTV Experiment*
February 16, 2022—Amateur Radio on the International Space Station (ARISS) is planning for a special SSTV experiment. ARISS is the group that puts together special amateur radio contacts between students around the globe and crew members with ham radio licenses on the International Space Station (ISS) and develops and operates the amateur radio equipment on ISS.
As part of its ARISS 2.0 initiative, the ARISS International team is expanding its educational and life-long learning opportunities for youth and ham radio operators around the world. ARISS Slow Scan Television (SSTV), which is the transmission of images from ISS using amateur radio, is a very popular ARISS mode of operation. To expand ARISS SSTV capabilities, the ARISS Europe and ARISS USA teams plan to perform special SSTV Experiments using a new SSTV digital coding scheme. For the signal reception, the software "KG-STV" is required, as available on internet.
*We kindly request that the amateur radio community refrain from the use of the voice repeater thin this SSTV experiment on 20th of February 2022 over Europe.*
This is a unique and official ARISS experiment. We kindly request keeping the voice repeater uplink free from other voice transmissions during the experiment time period. Also note that ARISS is temporarily employing the voice repeater to expedite these experiments and make a more permanent, more expansive SSTV capability fully operational on other downlink frequencies.
The first experiment in the series will utilize ARISS approved ground stations in Europe that will transmit these digital SSTV signals. These will be available for all in the ISS footprint when SSTV transmissions occur. The first SSTV experiment is planned for 20 February 2022 between 05:10 UTC and 12:00 UTC for five ISS passes over Europe. Please be aware that this event depends on ARISS IORS radio availabilities and ISS crew support, so last-minute changes may occur.
To promote quick experimental SSTV investigations—to learn and improve--the ARISS team will employ the ISS Kenwood radio in its cross-band repeater mode. The crossband repeater operates on a downlink of 437.800 MHz. Each transmission sequence will consist of 1:40 minute transmission, followed by 1:20 minute pause and will be repeated several times within an ISS pass over Europe.
The used modulation is MSK w/o error correction. For the decoding of the 320 x 240 px image, the software KG-STV is required. The KG-STV software can be downloaded from the following link: " http://amsat-nl.org/wordpress/wp-content/uploads/2022/02/kgstv_ISS.zip http://atpscan.global.hornetsecurity.com/index.php?atp_str=RbRuvk8Cl2Y8N46gAd2WJi4NPxa0_L27Tw4n8J9qBu_yFMAG9DhexEiKfb8inNu-1K7Z3roCyxkIoZLaYpuIitl71n5TmsLgkxfq4PWHkfxtoVFfEvmcxX0HT95MSIRsZOqPuQ7x7BZtXoVLhTfDKHp1zsM9pQBYKtqNv6ImpZzqr_yFV_VeXcuJxAGV58DExVV98Rb6MQO6EB_FkSf_4LrHH5Y9-CYB6JXpqCmkQQM5wj7EFtB7xKWSuLBoXAXy0K9XPKbfy8S3DYt0iJpk1l1YcEGh24ZNK8OY-D5CeeviYELbtbydUo7lfs2E9o_rLEo50M5h68IomtLwX30Gns08cbql9lwRIzo6I6nd6riAf4TT1SlpeCM6OiPtVXVCeFLO5MUK7YJjuv8v "
The ZIP file contains the KG-STV program, an installation and setup manual, some images and MP3 audio samples for your first tests as well as links for additional technical information about the KG-STV use.
The members of the ham radio community youth and the public are invited to receive and decode these special SSTV signals.
Experiment reports are welcome and should be uploaded to " [email protected]"
More information will be available on the AMSAT-NL.org web page: " https://amsat-nl.org/?page_id=568 https://atpscan.global.hornetsecurity.com/index.php?atp_str=VjDjlt_Hz5NW7T5-xCHtasFcEvQSyTfVdh7jIcfiriINM2MhCSJKF8Dq4yqzJAIU4NIuI42FUeMMYbS3eytUDYPJcoqmzZSUXpE0moZexyo18Ig9-vQYRtdHFsiETaG3sxCJl4yZtMjDuTZY9-x8bOou398lKYCY7V5ErwQC6Ub06zIFSXijgcqHyP66wdIBy_SOQkU3EfzGVk92dQG_FIGDgVLfxvDQ5ZX23e2Gi7Mm3RiEgH8qyAwZgeRQ4nDB3Tux11OVc38OW3bzI1IliZR4C65n-G_82onlf3HFiUKlO6kjOjojNlO7uIwZqpxHV908Izo6I9zikXkJTDOnYjDE1jppnm0 "
(for the team: Oliver Amend, DG6BCE)
About ARISS:
Amateur Radio on the International Space Station (ARISS) is a cooperative venture of international amateur radio societies and the space agencies that support the International Space Station (ISS). In the United States, sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American Radio Relay League (ARRL), the ISS National Lab-Space Station Explorers, Amateur Radio Digital Communications (ARDC) and NASA’s Space communications and Navigation program. ARISS Europe is in close cooperation with the European Space Agency and its national space agencies, the space industry and the amateur radio member associations. The primary goal of ARISS is to promote exploration of science, technology, engineering, the arts, and mathematics topics. ARISS does this by organizing scheduled contacts via amateur radio between crew members aboard the ISS and students. Before and during these radio contacts, students, educators, parents, and communities take part in hands-on learning activities tied to space, space technologies, and amateur radio. For more information, see www.ariss.org and www.ariss-eu.org.
Oliver Amend, DG6BCE (oliver.amend (at) gmx.de)
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
I totally agree!
On Thu, 2022-02-17 at 16:41 +1030, Mark Jessop wrote:
I'm curious as to why KG-STV was chosen for this activity, over something like EasyPal / HamDRM ? It's a FM repeater, anything that fits within the audio passband is going to be usable.
The KG-STV software appears to have been abandoned in 2010, is Windows only (please don't use WINE as an excuse here...) and there's not really enough documentation available to make a compatible decoder.
At least with HamDRM (or EasyPal - same modulation and protocol), there's more than one bit of software to decode it (EasyPal on Windows, and the open-source QSSTV on Linux).
73 Mark VK5QI
On Thu, Feb 17, 2022 at 2:55 PM David Jordan [email protected] wrote:
*ARISS News Release No. 22-08 *
*Dave Jordan, AA4KN *
*ARISS PR*
*[email protected] [email protected]*
*FOR IMMEDIATE RELEASE*
*ARISS Europe to Perform Special Digital SSTV Experiment*
February 16, 2022—Amateur Radio on the International Space Station (ARISS) is planning for a special SSTV experiment. ARISS is the group that puts together special amateur radio contacts between students around the globe and crew members with ham radio licenses on the International Space Station (ISS) and develops and operates the amateur radio equipment on ISS.
As part of its ARISS 2.0 initiative, the ARISS International team is expanding its educational and life-long learning opportunities for youth and ham radio operators around the world. ARISS Slow Scan Television (SSTV), which is the transmission of images from ISS using amateur radio, is a very popular ARISS mode of operation. To expand ARISS SSTV capabilities, the ARISS Europe and ARISS USA teams plan to perform special SSTV Experiments using a new SSTV digital coding scheme. For the signal reception, the software "KG-STV" is required, as available on internet.
*We kindly request that the amateur radio community refrain from the use of the voice repeater thin this SSTV experiment on 20th of February 2022 over Europe.*
This is a unique and official ARISS experiment. We kindly request keeping the voice repeater uplink free from other voice transmissions during the experiment time period. Also note that ARISS is temporarily employing the voice repeater to expedite these experiments and make a more permanent, more expansive SSTV capability fully operational on other downlink frequencies.
The first experiment in the series will utilize ARISS approved ground stations in Europe that will transmit these digital SSTV signals. These will be available for all in the ISS footprint when SSTV transmissions occur. The first SSTV experiment is planned for 20 February 2022 between 05:10 UTC and 12:00 UTC for five ISS passes over Europe. Please be aware that this event depends on ARISS IORS radio availabilities and ISS crew support, so last-minute changes may occur.
To promote quick experimental SSTV investigations—to learn and improve--the ARISS team will employ the ISS Kenwood radio in its cross-band repeater mode. The crossband repeater operates on a downlink of 437.800 MHz. Each transmission sequence will consist of 1:40 minute transmission, followed by 1:20 minute pause and will be repeated several times within an ISS pass over Europe.
The used modulation is MSK w/o error correction. For the decoding of the 320 x 240 px image, the software KG-STV is required. The KG-STV software can be downloaded from the following link: " http://amsat-nl.org/wordpress/wp-content/uploads/2022/02/kgstv_ISS.zip <http://atpscan.global.hornetsecurity.com/index.php?atp_str=RbRuvk8Cl2Y8N46gA...
"
The ZIP file contains the KG-STV program, an installation and setup manual, some images and MP3 audio samples for your first tests as well as links for additional technical information about the KG-STV use.
The members of the ham radio community youth and the public are invited to receive and decode these special SSTV signals.
Experiment reports are welcome and should be uploaded to " [email protected]"
More information will be available on the AMSAT-NL.org web page: " https://amsat-nl.org/?page_id=568 <https://atpscan.global.hornetsecurity.com/index.php?atp_str=VjDjlt_Hz5NW7T5-...
"
(for the team: Oliver Amend, DG6BCE)
About ARISS:
Amateur Radio on the International Space Station (ARISS) is a cooperative venture of international amateur radio societies and the space agencies that support the International Space Station (ISS). In the United States, sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American Radio Relay League (ARRL), the ISS National Lab-Space Station Explorers, Amateur Radio Digital Communications (ARDC) and NASA’s Space communications and Navigation program. ARISS Europe is in close cooperation with the European Space Agency and its national space agencies, the space industry and the amateur radio member associations. The primary goal of ARISS is to promote exploration of science, technology, engineering, the arts, and mathematics topics. ARISS does this by organizing scheduled contacts via amateur radio between crew members aboard the ISS and students. Before and during these radio contacts, students, educators, parents, and communities take part in hands-on learning activities tied to space, space technologies, and amateur radio. For more information, see www.ariss.org and www.ariss-eu.org.
Oliver Amend, DG6BCE (oliver.amend (at) gmx.de)
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
On Thu, 2022-02-17 at 16:41 +1030, Mark Jessop wrote:
I'm curious as to why KG-STV was chosen for this activity, over something like EasyPal / HamDRM ?
Well, I suspect whoever organized the experiment was likely more familiar with KG-STV than the alternatives. Let's celebrate the fact that a digital format is being tested, even if it won't have error correction turned on for this first experiment.
While the KG-STV format is not well specified it does not seem to be proprietary - lots of details are on http://www.g0hwc.com/kg-stv-english.html . If it becomes ARISS 2.0 standard, I imagine software will present itself for non-Windows platforms.
-Joe KM1P
The specifications on that site are not sufficient to build a compatible decoder. It's kind of like providing a schematic diagram with a bunch of the values left blank. There would be reverse-engineering required, which kind of goes against the ethos of amateur radio? Everything we do on amateur radio bands should be openly documented (whether in specification, or worst-case, as source code) to allow others to experiment freely. Operations on ARISS, being worldwide and trying to reach out to as many people as possible, should be leading the way on this front...
73 Mark VK5QI
On Fri, Feb 18, 2022 at 6:15 AM Joseph B. Fitzgerald < [email protected]> wrote:
On Thu, 2022-02-17 at 16:41 +1030, Mark Jessop wrote:
I'm curious as to why KG-STV was chosen for this activity, over something like EasyPal / HamDRM ?
Well, I suspect whoever organized the experiment was likely more familiar with KG-STV than the alternatives. Let's celebrate the fact that a digital format is being tested, even if it won't have error correction turned on for this first experiment.
While the KG-STV format is not well specified it does not seem to be proprietary - lots of details are on http://www.g0hwc.com/kg-stv-english.html . If it becomes ARISS 2.0 standard, I imagine software will present itself for non-Windows platforms.
-Joe KM1P
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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On Thu, 2022-02-17 at 19:45 +0000, Joseph B. Fitzgerald wrote:
On Thu, 2022-02-17 at 16:41 +1030, Mark Jessop wrote:
I'm curious as to why KG-STV was chosen for this activity, over something like EasyPal / HamDRM ?
Well, I suspect whoever organized the experiment was likely more familiar with KG-STV than the alternatives. Let's celebrate the fact that a digital format is being tested, even if it won't have error correction turned on for this first experiment.
While the KG-STV format is not well specified it does not seem to be proprietary - lots of details are on http://www.g0hwc.com/kg-stv-english.html%C2%A0.%C2%A0 If it becomes ARISS 2.0 standard, I imagine software will present itself for non-Windows platforms.
-Joe KM1P
It has been 12 years since the last release of KG-STV! What makes you think that now something new will be presented even for windows?
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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Apostolos Kefalas [email protected] wrote:
It has been 12 years since the last release of KG-STV! What makes you think that now something new will be presented even for windows?
I am arguing that if there is a need in the marketplace, for instance lots of folks want to see KG-STV formatted images from the ISS, someone will step up and write the software for other platforms, and update the Windows software if there is a need. If there is no compelling need for an update and/or port to other platforms, it will likely remain as is.
-de KM1P Joe
... if the author released the source code and detailed specifications of the mode, then maybe.
Otherwise, what you suggest is extremely unlikely. Development time would be better spent extending the support of a modem that is already open.
73 Mark VK5QI
On Sat, Feb 19, 2022 at 4:51 AM Joseph B. Fitzgerald < [email protected]> wrote:
Apostolos Kefalas [email protected] wrote:
It has been 12 years since the last release of KG-STV! What makes you
think that
now something new will be presented even for windows?
I am arguing that if there is a need in the marketplace, for instance lots of folks want to see KG-STV formatted images from the ISS, someone will step up and write the software for other platforms, and update the Windows software if there is a need. If there is no compelling need for an update and/or port to other platforms, it will likely remain as is.
-de KM1P Joe
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
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I completely agree with Mark. Trying to develop new software for an incompletely specified protocol is an exercise in futility, and would require extensive reverse engineering. Updating the Windows software is just as improbable given that there's no source code, so unless the original author publishes that, it can't be updated except by him / her.
The question that comes to my mind is that, if this protocol is being used by QO-100 to send images, as stated on the wells10000 web page, what software are they using to do that? It is not going to be a Windows GUI application! Can we get a hold of that software? Is *that* open source, so that we could actually do something with it??
Martin. KD6YAM
On Fri, Feb 18, 2022 at 3:09 PM Mark Jessop [email protected] wrote:
... if the author released the source code and detailed specifications of the mode, then maybe.
Otherwise, what you suggest is extremely unlikely. Development time would be better spent extending the support of a modem that is already open.
73 Mark VK5QI
On Sat, Feb 19, 2022 at 4:51 AM Joseph B. Fitzgerald < [email protected]> wrote:
Apostolos Kefalas [email protected] wrote:
It has been 12 years since the last release of KG-STV! What makes you
think that
now something new will be presented even for windows?
I am arguing that if there is a need in the marketplace, for instance lots of folks want to see KG-STV formatted images from the ISS, someone will step up and write the software for other platforms, and update the Windows software if there is a need. If there is no compelling need for an update and/or port to other platforms, it will likely remain as is.
-de KM1P Joe
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
I agree, strange choice and I won't download and use the binary regardless. Rob KA2CZU On Thursday, February 17, 2022, 01:12:12 AM EST, Mark Jessop [email protected] wrote:
I'm curious as to why KG-STV was chosen for this activity, over something like EasyPal / HamDRM ? It's a FM repeater, anything that fits within the audio passband is going to be usable. The KG-STV software appears to have been abandoned in 2010, is Windows only (please don't use WINE as an excuse here...) and there's not really enough documentation available to make a compatible decoder. At least with HamDRM (or EasyPal - same modulation and protocol), there's more than one bit of software to decode it (EasyPal on Windows, and the open-source QSSTV on Linux). 73Mark VK5QI On Thu, Feb 17, 2022 at 2:55 PM David Jordan [email protected] wrote:
ARISS News Release No. 22-08
Dave Jordan, AA4KN
ARISS PR
FOR IMMEDIATE RELEASE
ARISS Europe to Perform Special Digital SSTV Experiment
February 16, 2022—Amateur Radio on the InternationalSpace Station (ARISS) is planning for a special SSTV experiment. ARISS is thegroup that puts together special amateur radio contacts between students aroundthe globe and crew members with ham radio licenses on the International SpaceStation (ISS) and develops and operates the amateur radio equipment on ISS.
As part of its ARISS 2.0 initiative, the ARISSInternational team is expanding its educational and life-long learningopportunities for youth and ham radio operators around the world. ARISSSlow Scan Television (SSTV), which is the transmission of images from ISS usingamateur radio, is a very popular ARISS mode of operation. To expand ARISSSSTV capabilities, the ARISS Europe and ARISS USA teams plan to perform specialSSTV Experiments using a new SSTV digital coding scheme. For the signalreception, the software "KG-STV" is required, as available on internet.
We kindly request that the amateur radio communityrefrain from the use of the voice repeater thin this SSTV experiment on 20th ofFebruary 2022 over Europe.
This is a unique and official ARISS experiment. Wekindly request keeping the voice repeater uplink free from other voicetransmissions during the experiment time period. Also note that ARISS istemporarily employing the voice repeater to expedite these experiments and makea more permanent, more expansive SSTV capability fully operational on otherdownlink frequencies.
The first experiment in the series will utilize ARISSapproved ground stations in Europe that will transmit these digital SSTVsignals. These will be available for all in the ISS footprint when SSTVtransmissions occur. The first SSTV experiment is planned for 20 February2022 between 05:10 UTC and 12:00 UTC for five ISS passes over Europe. Please be aware that this event depends on ARISS IORS radio availabilities andISS crew support, so last-minute changes may occur.
To promote quick experimental SSTV investigations—tolearn and improve--the ARISS team will employ the ISS Kenwood radio in itscross-band repeater mode. The crossband repeater operates on a downlinkof 437.800 MHz. Each transmission sequence will consist of 1:40 minutetransmission, followed by 1:20 minute pause and will be repeated several timeswithin an ISS pass over Europe.
The used modulation is MSK w/o error correction. Forthe decoding of the 320 x 240 px image, the software KG-STV is required. The KG-STV software can be downloaded from the following link: "http://amsat-nl.org/wordpress/wp-content/uploads/2022/02/kgstv_ISS.zip"
The ZIP file contains the KG-STV program, aninstallation and setup manual, some images and MP3 audio samples for your firsttests as well as links for additional technical information about the KG-STVuse.
The members of the ham radio community youth and thepublic are invited to receive and decode these special SSTV signals.
Experiment reports are welcome and should be uploadedto "[email protected]"
More information will be available on the AMSAT-NL.org web page: "https://amsat-nl.org/?page_id=568"
(for the team: OliverAmend, DG6BCE)
-----
About ARISS:
Amateur Radioon the International Space Station (ARISS) is a cooperative venture ofinternational amateur radio societies and the space agencies that support theInternational Space Station (ISS). In the United States, sponsors are the RadioAmateur Satellite Corporation (AMSAT), the American Radio Relay League (ARRL),the ISS National Lab-Space Station Explorers, Amateur Radio DigitalCommunications (ARDC) and NASA’s Space communications and Navigation program.ARISS Europe is in close cooperation with the European Space Agency and itsnational space agencies, the space industry and the amateur radio memberassociations. The primary goal of ARISS is to promote exploration of science,technology, engineering, the arts, and mathematics topics. ARISS does this byorganizing scheduled contacts via amateur radio between crew members aboard theISS and students. Before and during these radio contacts, students, educators,parents, and communities take part in hands-on learning activities tied tospace, space technologies, and amateur radio. For more information, see www.ariss.org and www.ariss-eu.org.
Oliver Amend,DG6BCE (oliver.amend (at) gmx.de)
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Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
participants (6)
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Apostolos Kefalas -
David Jordan -
Joseph B. Fitzgerald -
Mark Jessop -
Martin Cooper -
Robert Switzer