September 2023 - AMSAT-BB - mailman.amsat.org

Upcoming ARISS Contact Schedule as of 2023-09-11 21:00 UTC
by aj9n＠aol.com 11 Sep '23

11 Sep '23

Upcoming ARISS Contact Schedule as of 2023-09-11 21:00 UTC Quick list of scheduled contacts and events: ESPRIT: Private Higher School of Engineering and Technology, Little Ariana, Tunisia, telebridge via K6DUE The ISS callsign is presently scheduled to be NA1SS The downlink frequency is presently scheduled to be 145.800 MHz The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The scheduled crewmember is Andreas Mogensen KG5GCZ The ARISS mentor is ON6TI Contact is go for: Tue 2023-09-12 09:01:58 UTC 23 deg Escuela Preparatoria La Salle, Torreon Coah, Mexico, telebridge via IK1SLD (***) The ISS callsign is presently scheduled to be OR4ISS The downlink frequency is presently scheduled to be 145.800 MHz The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The scheduled crewmember is Jasmin Moghbeli KI5WSL (***) The ARISS mentor is VE3TBD Contact is go for: Fri 2023-09-22 16:19:45 UTC 80 deg (***) The crossband repeater continues to be active. If any crewmember is so inclined, all they have to do is pick up the microphone, raise the volume up, and talk on the crossband repeater. So give a listen, you just never know. Note, all times are approximate. It is recommended that you do your own orbital prediction or start listening about 10 minutes before the listed time. All dates and times listed follow International Standard ISO 8601 date and time format YYYY-MM-DD HH:MM:SS The complete schedule page has been updated as of 2023-09-11 21:00 UTC. (***) Here you will find a listing of all scheduled school contacts, and questions, other ISS related websites, IRLP and Echolink websites, and instructions for any contact that may be streamed live. https://www.amsat.org/amsat/ariss/news/arissnews.rtf https://www.amsat.org/amsat/ariss/news/arissnews.txt The successful school list has been updated as of 2023-09-06 15:30 UTC. https://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf ####################################################################################################################################### Comments on making general contacts I have been seeing a lot of traffic on Facebook and I suspect on other social media sites with people asking why they are not hearing the crew make general contacts. First off the crew is very busy on the ISS and they simply may not have the time to just pick up the microphone and talk. Also, one needs to be aware of their normal daily schedule. I have listed below the constraints that we at ARISS have to follow in order to schedule the school contacts. Hopefully this will help you better schedule your opportunities. Typical daily schedule Wakeup to Workday start= 1.5 hours Workday start to Workday end=12 hours Workday end to Sleep= 2 hours Sleep to wakeup= 8.5 hours The crew's usual waking period is 0730 - 1930 UTC. The most common times to find a crew member making casual periods are about one hour after waking and before sleeping, when they have personal time. They're usually free most of the weekend, as well. SSTV events are not that often. So please check out https://www.ariss.org/ for the latest information or watch for the ARISS announcements. And don’t forget that the packet system is active. As always, if there is an EVA, a docking, or an undocking; the ARISS radios are turned off as part of the safety protocol. The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The latest list of frequencies in use can be found at https://www.ariss.org/contact-the-iss.html ######################################################################################################################################## A multi-point telebridge contact means that each student will be on the telebridge from their own home. **************************************************************************************************************************************** ARISS is very aware of the impact that COVID-19 is having on schools and the public in general. As such, we may have last minute cancellations or postponements of school contacts. As always, I will try to provide everyone with near-real-time updates. Watch for future COVID-19 related announcements at https://www.ariss.org/ The following schools have now been postponed or cancelled due to COVID-19: Postponed: No new schools Cancelled: No new schools **************************************************************************************************************************************** The ARISS webpage is at https://www.ariss.org/ Note that there are links to other ARISS websites from this site. The main page for Applying to Host a Scheduled Contact may be found at https://www.ariss.org/apply-to-host-an-ariss-contact.html +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ARISS Contact Applications (United States) Call for Proposals The next proposal window for US schools and educational organizations to host an Amateur Radio contact with a crew member on board the ISS opens February 20, 2023 for contacts to be scheduled for January 1, 2024 – June 30, 2024. This proposal is due to ARISS by March 31, 2023 at 11:59 PM Pacific Time. Find more information and proposal instructions, visit the ARISS-USA website at: https://ariss-usa.org/hosting-an-ariss-contact-in-the-usa/ Please direct any questions to ariss.us.education(a)gmail.com. For future proposal information and more details such as expectations, proposal guidelines and proposal form, and dates and times of Information Webinars, go to www.ariss.org. 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 and National Aeronautics and Space Administration (NASA). The primary goal of ARISS is to promote exploration of science, technology, engineering, and mathematics (STEAM) topics by organizing scheduled contacts via amateur radio between crew members aboard the ISS and students in classrooms or public forms. Before and during these radio contacts, students, educators, parents, and communities learn about space, space technologies, and amateur radio. For more information, see www.ariss.org. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ARISS Contact Applications (Europe, Africa and the Middle East) Schools and Youth organizations in Europe, Africa and the Middle East interested in setting up an ARISS radio contact with an astronaut on board the International Space Station are invited to submit an application from September to October and from February to April. Please refer to details and the application form at www.ariss-eu.org/school-contacts. Applications should be addressed by email to: school.selection.manager(a)ariss-eu.org ARISS Contact Applications (Canada, Central and South America, Asia and Australia and Russia) +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Organizations outside the United States can apply for an ARISS contact by filling out an application. Please direct questions to the appropriate regional representative listed below. If your country is not specifically listed, send your questions to the nearest ARISS Region listed. If you are unsure which address to use, please send your question to the ARISS-Canada representative; they will forward your question to the appropriate coordinator. For the application, go to: https://www.ariss.org/ariss-application.html. ARISS-Canada and the Americas, except USA: Steve McFarlane, VE3TBD email to: ve3tbd(a)gmail.com ARISS-Japan, Asia, Pacific and Australia: Satoshi Yasuda, 7M3TJZ email to: ariss(a)iaru-r3.org, Japan Amateur Radio League (JARL) https://www.jarl.org/ ARISS-Russia: Soyuz Radioljubitelei Rossii (SRR) https://srr.ru/ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ARISS is always glad to receive listener reports for the above contacts. ARISS thanks everyone in advance for their assistance. Feel free to send your reports to aj9n(a)amsat.org or aj9n(a)aol.com. Listen for the ISS on the downlink of 145.8Ø MHz unless otherwise noted. ******************************************************************************* All ARISS contacts are made via the Kenwood radio unless otherwise noted. ******************************************************************************* Several of you have sent me emails asking about the RAC ARISS website and not being able to get in. That has now been changed to https://www.ariss.org/ Note that there are links to other ARISS websites from this site. **************************************************************************** Looking for something new to do? How about receiving DATV from the ISS? Please note that the HamTV system has been brought back to earth for troubleshooting. Please monitor ARISS-EU or ARISS-ON for the very latest news on the troubleshooting efforts. If interested, then please go to the ARISS-EU website for complete details. Look for the buttons indicating Ham Video. http://www.ariss-eu.org/ If you need some assistance, ARISS mentor Kerry N6IZW, might be able to provide some insight. Contact Kerry at kbanke(a)sbcglobal.net The HamTV webpage: https://www.amsat-on.be/hamtv-summary/ **************************************************************************** ARISS congratulates the following mentors who have now mentored over 100 schools: Sergey RV3DR with 214 Francesco IKØWGF with 150 Satoshi 7M3TJZ with 149 Gaston ON4WF with 124 Peter IN3GHZ with 115 Steve VE3TBD with 105 **************************************************************************** The webpages listed below were all reviewed for accuracy. Out of date webpages were removed, and new ones have been added. If there are additional ARISS websites I need to know about, please let me know. Total number of ARISS ISS to earth school events is 1657. Each school counts as 1 event. Total number of ARISS ISS to earth school contacts is 1565. Each contact may have multiple schools sharing the same time slot. Total number of ARISS supported terrestrial contacts is 48. Please feel free to contact me if more detailed statistics are needed. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ The following US states and entities have never had an ARISS contact: South Dakota, American Samoa, Guam, Northern Marianas Islands, and the Virgin Islands. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ QSL information may be found at: https://www.ariss.org/qsl-cards.html ISS callsigns: DPØISS, FXØISS, GB1SS, IRØISS, NA1SS, OR4ISS, RSØISS **************************************************************************** Frequency chart for packet, voice, and crossband repeater modes showing Doppler correction as of 2005-07-29 04:00 UTC https://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correcti… Check out the Zoho reports of the ARISS contacts https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415 **************************************************************************** Exp. 68 on orbit Sergey Prokopyev Francisco Rubio Dimitri Petelin SpaceX Crew-7 on orbit Jasmin Moghbeli KI5WSL Andreas Mogensen KG5GCZ Satoshi Furukawa Konstantin Borisov **************************************************************************** 73, Charlie Sufana AJ9N One of the ARISS operation team mentors

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TEVEL-3
by david.greenberg 11 Sep '23

11 Sep '23

Hello All, TEVEL-3 FM transponder has been activated, starting from today, 11.09.23 19:44U for 72 hours.73,David 4X1DGנשלח מה-Galaxy שלי

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TEVEL satellites
by david.greenberg 11 Sep '23

11 Sep '23

Hi All,A short update.The current situatin is that TEVEL-5,6,7 are close to each other an have an ovelapping condition. So, only one of them can be activated, until they separate from each other.TEVEL-4 has stopped trnsmitting beacons a few weeks ago and is not responding to reset commands. This has happened in the past and the sat has returned to transmit after about two weeks.We still hope to hear it soon.We are also trying to resolve the TEVEL-8 issues.נשלח מה-Galaxy שלי73,David 4X1DG

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AMSAT-UK Colloquium 2023 – Call For Speakers
by David Johnson 11 Sep '23

11 Sep '23

Hi, This is a call for speakers for the AMSAT-UK International Space Colloquium 2023 to be held as part of the RSGB Convention on October 14-15 at the Kents Hill Park Conference Centre, Timbold Drive, Milton Keynes, MK7 6BZ. https://amsat-uk.org/colloquium/ AMSAT-UK invite speakers, about amateur radio, space and associated activities, for this event. Submissions should be sent via e-mail: to dave at g4dpz.me.uk AMSAT-UK also invites anyone with requests for Program Topics to submit them as soon as possible. Likewise if anyone knows of a good speaker on subjects of interest to the audience, please send us details. 73 Dave Johnson, G4DPZ Joint Hon. Sec. AMSAT-UK

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Cross Polarized Yagi: X or +
by Kenny Heernaert 11 Sep '23

11 Sep '23

It doesn’t matter how the antenna is mounted , either X or + . The best way to find out where a conductive crossboom passes the antenna is to make simulation with NEC , within the software you can adapt the length/diameter/position of the crossboom and find the spot where the interaction is less . An advantage of mounting the antenna in + configuration that you can start from a V/H polarized antenna and can use this polarizations as well . An X mounted is more complex to achieve V/H , but then the X has the advantage of having all possible polarizations such as : V/H/-45/+45° . Best regards, Kenny ON4DPX Van: K4IDC via AMSAT-BB [mailto:[email protected]] Verzonden: zondag 10 september 2023 23:54 Aan: AMSAT-BB <amsat-bb(a)amsat.org> Onderwerp: [AMSAT-BB] Cross Polarized Yagi: X or + I'm new to this mode.. I was advised by someone I think is knowledgeable, and certainly more so than me, to orient my cross polarized 2m Yagi so that the elements resemble an X rather than a +. Easily enough done...what's the advantage? It's my understanding that the two sets of elements are out of phase by 90° & combined at the common feed point to emulate circular polarization. How does the rotation along the boom axis make a difference? Seeking understanding... Thanks, Robin Midgett K4IDC

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Re: Cross Polarized Yagi: X or +
by Joseph B. Fitzgerald 11 Sep '23

11 Sep '23

The idea is that there will me minimal coupling to the mast that supports it, and therefore minimizing any pattern distortion. This is considered simpler than alternative of fiberglass or wood mast. de KM1P Joe

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Re: Cross Polarized Yagi: X or +
by Gary 10 Sep '23

10 Sep '23

Mounting on a metal crossboom is fine, as long as you avoid the couple of spots pointed out in the paper referenced below. The manufacturers may have thought that too difficult to explain, or thought people would disregard the positioning. Maybe they had a deal with someone who made the fiberglass crossbooms. I do not know. I do know a metal crossboom as described in Kent's paper can work very well as was actually measured on an antenna range. 73, Joe kk0sd From: Calvin McDonald via AMSAT-BB <amsat-bb(a)amsat.org> Sent: Sunday, September 10, 2023 6:20 PM To: AMSAT-BB <amsat-bb(a)amsat.org> Subject: [AMSAT-BB] Re: Cross Polarized Yagi: X or + I was under the impression that it didn't matter how that antenna was oriented (it circular) and that a conductive mast shouldn't be used. From the manual for the M2 circular polarized 70cm yagi: "The 436CP30 is a circular polarized antenna and creates a field in all planes or polarities. Performance DETERIORATES SIGNIFICANTLY if it is mounted on a metal (conductive) mast or cross boom. A mast or cross boom of any NON-CONDUCTIVE material must be used. Fiberglass is the prime choice for its strength and weather resistance. Mount the 436CP30 so that element tips are at least 12" from any conductive material (mast, tower, feed line, etc.)." Cal - N7AY On 9/10/2023 4:39 PM, Gary via AMSAT-BB wrote: It will allow you to use a conductive crossboom, and/or route your feedline back out of the antennas along the crossboom. Antenna guru Kent Britain, wa5vjb studied and tested this. He wrote a paper on it and published it as part of an AMSAT symposium. You can see the paper here: Using Metal Cross Booms w/ Satellite Antennas (kk0sd.net)<http://www.kk0sd.net/metalboom/metalboom.htm> 73, Joe kk0sd From: K4IDC via AMSAT-BB <amsat-bb(a)amsat.org><mailto:[email protected]> Sent: Sunday, September 10, 2023 4:54 PM To: AMSAT-BB <amsat-bb(a)amsat.org><mailto:[email protected]> Subject: [AMSAT-BB] Cross Polarized Yagi: X or + I'm new to this mode.. I was advised by someone I think is knowledgeable, and certainly more so than me, to orient my cross polarized 2m Yagi so that the elements resemble an X rather than a +. Easily enough done...what's the advantage? It's my understanding that the two sets of elements are out of phase by 90° & combined at the common feed point to emulate circular polarization. How does the rotation along the boom axis make a difference? Seeking understanding... Thanks, Robin Midgett K4IDC ----------------------------------------------------------- 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<https://mailman.amsat.org/>

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Re: Cross Polarized Yagi: X or +
by Calvin McDonald 10 Sep '23

10 Sep '23

I was under the impression that it didn't matter how that antenna was oriented (it circular) and that a conductive mast shouldn't be used. From the manual for the M2 circular polarized 70cm yagi: “The 436CP30 is a circular polarized antenna and creates a field in all planes or polarities. Performance DETERIORATES SIGNIFICANTLY if it is mounted on a metal (conductive) mast or cross boom. A mast or cross boom of any NON-CONDUCTIVE material must be used. Fiberglass is the prime choice for its strength and weather resistance. Mount the 436CP30 so that element tips are at least 12” from any conductive material (mast, tower, feed line, etc.).” Cal - N7AY On 9/10/2023 4:39 PM, Gary via AMSAT-BB wrote: > > It will allow you to use a conductive crossboom, and/or route your > feedline back out of the antennas along the crossboom. Antenna guru > Kent Britain, wa5vjb studied and tested this. He wrote a paper on it > and published it as part of an AMSAT symposium. You can see the paper > here: > > Using Metal Cross Booms w/ Satellite Antennas (kk0sd.net) > <http://www.kk0sd.net/metalboom/metalboom.htm> > > 73, > > Joe kk0sd > > *From:* K4IDC via AMSAT-BB <amsat-bb(a)amsat.org> > *Sent:* Sunday, September 10, 2023 4:54 PM > *To:* AMSAT-BB <amsat-bb(a)amsat.org> > *Subject:* [AMSAT-BB] Cross Polarized Yagi: X or + > > I'm new to this mode.. > > I was advised by someone I think is knowledgeable, and certainly more > so than me, to orient my cross polarized 2m Yagi so that the elements > resemble an X rather than a +. Easily enough done...what's the advantage? > > It's my understanding that the two sets of elements are out of phase > by 90° & combined at the common feed point to emulate circular > polarization. How does the rotation along the boom axis make a difference? > > Seeking understanding... > > Thanks, > > Robin Midgett K4IDC > > > ----------------------------------------------------------- > > 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 athttps://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 athttps://mailman.amsat.org

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Re: Cross Polarized Yagi: X or +
by Gary 10 Sep '23

10 Sep '23

It will allow you to use a conductive crossboom, and/or route your feedline back out of the antennas along the crossboom. Antenna guru Kent Britain, wa5vjb studied and tested this. He wrote a paper on it and published it as part of an AMSAT symposium. You can see the paper here: Using Metal Cross Booms w/ Satellite Antennas (kk0sd.net)<http://www.kk0sd.net/metalboom/metalboom.htm> 73, Joe kk0sd From: K4IDC via AMSAT-BB <amsat-bb(a)amsat.org> Sent: Sunday, September 10, 2023 4:54 PM To: AMSAT-BB <amsat-bb(a)amsat.org> Subject: [AMSAT-BB] Cross Polarized Yagi: X or + I'm new to this mode.. I was advised by someone I think is knowledgeable, and certainly more so than me, to orient my cross polarized 2m Yagi so that the elements resemble an X rather than a +. Easily enough done...what's the advantage? It's my understanding that the two sets of elements are out of phase by 90° & combined at the common feed point to emulate circular polarization. How does the rotation along the boom axis make a difference? Seeking understanding... Thanks, Robin Midgett K4IDC

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Cross Polarized Yagi: X or +
by K4IDC 10 Sep '23

10 Sep '23

I'm new to this mode.. I was advised by someone I think is knowledgeable, and certainly more so than me, to orient my cross polarized 2m Yagi so that the elements resemble an X rather than a +. Easily enough done...what's the advantage? It's my understanding that the two sets of elements are out of phase by 90° & combined at the common feed point to emulate circular polarization. How does the rotation along the boom axis make a difference? Seeking understanding... Thanks, Robin Midgett K4IDC

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