August 2019 - AMSAT-BB - mailman.amsat.org

Re: [amsat-bb] Update: Rent GEO bandwidth for US
by Ev Tupis 22 Aug '19

22 Aug '19

You're asking the wrong person, Sancho (lol). I was restating Michelle's potentially very exciting opportunity using different words to see if I understood it. Let's wait on her reply. I haven't seen it yet. Ev On Thursday, August 22, 2019, 7:29:09 AM EDT, John Kludt via AMSAT-BB <amsat-bb(a)amsat.org> wrote: Ev, But the aggregator can't uplink directly to the satellite as the uplink is outside of the amateur bands. So the aggregator must send everything to an earth station with a commercial license, correct? Would the aggregator be single channel or work more like a linear transponder sending along multiple signals in mixed modes at once? Unless I am wrong, the aggregator must be colocated with the commercial earth station or we are back into Internet required land thereby decreasing the encomm utility of this effort. Sancho Sent from my Verizon Motorola Smartphone On Aug 21, 2019 22:34, Ev Tupis via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > > Hi Michelle, > What a fascinating opportunity. I'd like to try to describe this using different words to see if I get it. > Echostar 9 is a geosynchronous satellite with 1 MHz of spectrum to sell. > Both the up and down frequencies are outside of the amateur bands. > To use it, an aggregator is needed. An aggregator is a "bridge" device that converts amateur-band RF to satellite uplink RF and setellite downlink RF to amateur-band RF. > Amateurs simply need to be in range of an aggregator. It is the aggregators responsibility to remain aimed at the satellite. > > The aggregator determines if it will bridge FM or Linear (SSB, CW, PSK31, etc.) modes. > Is this right? > Regards,Ev, W2EV > > On Wednesday, August 21, 2019, 9:38:12 PM EDT, Michelle Thompson via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > > An arrangement on Echostar9 for 1MHz of bandwidth for up to 4 years of > USA+Mexico+Canada coverage is on offer for $2000 a month. > > I'm putting together a grant proposal for ARRL, FEMA, and others to pay for > at least year of access. I've gotten some positive feedback already. I > think we can make this happen with some fundraising effort. I'm willing to > provide the human resources and whatever incidental financing needs to > happen to secure a grant for rental. > > The main purpose of this type of system would be to enable field deployment > of "legacy mode" aggregators, like the Phase 4 Ground ARAP (Amateur Radio > Access Point). This is where traffic on any ham band, using FM or analog > gear, is digitized by a local "collecting" repeater, and is then sent to a > satellite from that repeater. FEMA and ARRL have expressed a lot of > interest and support for this in the past. Phase 4 Ground needs an ARAP in > order to support legacy radios. > > You don't have to personally have a microwave digital uplink. The > aggregator equipment does that part for you. > > This is most useful for public service and emergency communications. A > communications emergency is declared, someone (FEMA, Red Cross, motivated > ham volunteer) drops in the aggregator, and all ham traffic it hears is > sent to the satellite and then transmitted to the entire footprint. > > The downlink is 12-14GHz. This is not 10GHz, but is receivable by > individuals using very inexpensive gear. Traffic can be repeated over the > internet. > > What does this get us? > > An opportunity to do all the R&D for the aggregator and get some experience > with uplinks. > > What do we not have? > > A true ham band downlink. You can still receive the downlink yourself, or > you can get it over the internet from an earth station distributor. > > That's where we're at with *this* proposal. > > I think it's worth it to provide a US-based way to design, deploy, test, > and use real world aggregator equipment. We learn a lot about GEO comms and > figure out a lot of the ins and outs. > > Comment and critique welcome and encouraged. > > More soon! > -Michelle W5NYV > _______________________________________________ > 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. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb > > _______________________________________________ > 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. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb _______________________________________________ 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. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb

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SDR: Chaos Communication Camp 2019 talk
by Zach Metzinger 22 Aug '19

22 Aug '19

The Chaos Communication Camp is currently going on right now in Germany. There are many fascinating talks, including this one on SDR: https://media.ccc.de/v/Camp2019-10248-the_limits_of_general_purpose_sdr_dev… --- Zach N0ZGO

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Re: [amsat-bb] Update: Rent GEO bandwidth for US
by Joe 22 Aug '19

22 Aug '19

Yup that's it, and it's still very busy! Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 8/22/2019 10:58 AM, Peter Goodhall (2M0SQL) wrote: > Joe, > > Your referring to QO-100 the websdr can be found at > https://eshail.batc.org.uk/ > > 73, > > Peter, 2M0SQL > > On Thu, 22 Aug 2019 at 16:44, Joe <nss(a)mwt.net <mailto:[email protected]>> > wrote: > > There is that Geo bird over Africa. > > I had the URL for a site that lets you listen to the whole bird > passband. > > When it first went up I listened to it a LOT and was amazed at all > the different modes and coverage. > > But I can't find the URL anymore. I was gonna go and listen to see > what the activity level is now like since it is much older and the > newness has worn off. > > Joe WB9SBD > > The Original Rolling Ball Clock > Idle Tyme > Idle-Tyme.com > http://www.idle-tyme.com > On 8/22/2019 10:04 AM, Peter Goodhall (2M0SQL) via AMSAT-BB wrote: >> Hi Michelle, >> >> Excellent that they came back with the price and while the project >> sounds potentially interesting it's of course, not an amateur radio >> satellite, has anyone considered any risks for example, does this have >> the potential to raise questions when AMSAT approaches gov/orgs for >> discount launches for satellites we build that they might say that we >> could just go rent some transponder space. >> >> I know in the states disaster comms is a huge point (weirdly not >> something that's pushed in Europe), but agencies could already access >> this kind of technology just by purchasing sat phones, for example, I >> have an iridium unit that lets me make calls and access the internet >> although slowly but handy in highlands of Scotland with poor mobile >> coverage. >> >> By the sounds of this, it will be access points that then aggregate >> into a central point via probably internet backhaul then its dumped up >> to the satellite, to me that doesn't really feel within the ham >> spirit, although I'm sure tons would argue :) >> >> I know there's a big desire for GEO over North America, but do ops >> really think this is the ultimate solution? we're talking 96000 USD >> over 4 years. >> >> Think it really requires some heavy thought before just jumping on the idea. >> >> Just my thoughts, and I know I'm on the other side of the pond in the >> QO-100 footprint. >> >> Peter, 2M0SQL >> >> On Thu, 22 Aug 2019 at 02:36, Michelle Thompson via AMSAT-BB >> <amsat-bb(a)amsat.org> <mailto:[email protected]> wrote: >>> An arrangement on Echostar9 for 1MHz of bandwidth for up to 4 years of >>> USA+Mexico+Canada coverage is on offer for $2000 a month. >>> >>> I'm putting together a grant proposal for ARRL, FEMA, and others to pay for >>> at least year of access. I've gotten some positive feedback already. I >>> think we can make this happen with some fundraising effort. I'm willing to >>> provide the human resources and whatever incidental financing needs to >>> happen to secure a grant for rental. >>> >>> The main purpose of this type of system would be to enable field deployment >>> of "legacy mode" aggregators, like the Phase 4 Ground ARAP (Amateur Radio >>> Access Point). This is where traffic on any ham band, using FM or analog >>> gear, is digitized by a local "collecting" repeater, and is then sent to a >>> satellite from that repeater. FEMA and ARRL have expressed a lot of >>> interest and support for this in the past. Phase 4 Ground needs an ARAP in >>> order to support legacy radios. >>> >>> You don't have to personally have a microwave digital uplink. The >>> aggregator equipment does that part for you. >>> >>> This is most useful for public service and emergency communications. A >>> communications emergency is declared, someone (FEMA, Red Cross, motivated >>> ham volunteer) drops in the aggregator, and all ham traffic it hears is >>> sent to the satellite and then transmitted to the entire footprint. >>> >>> The downlink is 12-14GHz. This is not 10GHz, but is receivable by >>> individuals using very inexpensive gear. Traffic can be repeated over the >>> internet. >>> >>> What does this get us? >>> >>> An opportunity to do all the R&D for the aggregator and get some experience >>> with uplinks. >>> >>> What do we not have? >>> >>> A true ham band downlink. You can still receive the downlink yourself, or >>> you can get it over the internet from an earth station distributor. >>> >>> That's where we're at with *this* proposal. >>> >>> I think it's worth it to provide a US-based way to design, deploy, test, >>> and use real world aggregator equipment. We learn a lot about GEO comms and >>> figure out a lot of the ins and outs. >>> >>> Comment and critique welcome and encouraged. >>> >>> More soon! >>> -Michelle W5NYV >>> _______________________________________________ >>> Sent viaAMSAT-BB(a)amsat.org <mailto:[email protected]>. 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. >>> Not an AMSAT-NA member? Join now to support the amateur satellite program! >>> Subscription settings:https://www.amsat.org/mailman/listinfo/amsat-bb >> _______________________________________________ >> Sent viaAMSAT-BB(a)amsat.org <mailto:[email protected]>. 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. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings:https://www.amsat.org/mailman/listinfo/amsat-bb >> >> >

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apparent bogus email
by n4csitwo＠bellsouth.net 22 Aug '19

22 Aug '19

All, Please be aware of some apparent bogus email that you may receive to your amsat.org email address. An email just popped into my inbox from "amsat.org Admin." saying I have 4 pending messages ... At the bottom of the email it has ... Copyright © 2019 amsat.org, Inc. All rights reserved. We are located at 2233 S. third St., San Jose, CA 95123. I suggest you avoid opening this if you get one. Dave, AA4KN --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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Wrong grid exchanged - ND0C/VE6 - 21 Aug
by randydvm＠iw.net 22 Aug '19

22 Aug '19

While operating from grid DO30 as ND0C/VE6 today (21 Aug), I messed up and gave out the wrong grid (DN30) during the 1808Z AO-92 pass and the 1815Z AO-91 pass. I can only plead temporary insanity and ask forgiveness of all that I confused. (I had been roving in DN38 for the previous several days and apparently couldn’t get out of the “DN” rut!) I was in DO30 for both of those passes as I was for the next AO-91 pass at 1948Z. By that time I had recognized my mistake - to my horror - and correctly identified the grid! So again, to the 16 stations I worked on those two passes, I apologize. I will up-load to LotW when I get back home on 1 September with the correct grid info! (Thanks for your patience.) I am now in DO21 for a couple days, catching a few passes in between family vacation activities. 73, Randy, ND0C (roving as ND0C/VE6)

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Re: [amsat-bb] Update: Rent GEO bandwidth for US
by John Kludt 22 Aug '19

22 Aug '19

Ev, But the aggregator can't uplink directly to the satellite as the uplink is outside of the amateur bands. So the aggregator must send everything to an earth station with a commercial license, correct? Would the aggregator be single channel or work more like a linear transponder sending along multiple signals in mixed modes at once? Unless I am wrong, the aggregator must be colocated with the commercial earth station or we are back into Internet required land thereby decreasing the encomm utility of this effort. Sancho Sent from my Verizon Motorola Smartphone On Aug 21, 2019 22:34, Ev Tupis via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > > Hi Michelle, > What a fascinating opportunity. I'd like to try to describe this using different words to see if I get it. > Echostar 9 is a geosynchronous satellite with 1 MHz of spectrum to sell. > Both the up and down frequencies are outside of the amateur bands. > To use it, an aggregator is needed. An aggregator is a "bridge" device that converts amateur-band RF to satellite uplink RF and setellite downlink RF to amateur-band RF. > Amateurs simply need to be in range of an aggregator. It is the aggregators responsibility to remain aimed at the satellite. > > The aggregator determines if it will bridge FM or Linear (SSB, CW, PSK31, etc.) modes. > Is this right? > Regards,Ev, W2EV > > On Wednesday, August 21, 2019, 9:38:12 PM EDT, Michelle Thompson via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > > An arrangement on Echostar9 for 1MHz of bandwidth for up to 4 years of > USA+Mexico+Canada coverage is on offer for $2000 a month. > > I'm putting together a grant proposal for ARRL, FEMA, and others to pay for > at least year of access. I've gotten some positive feedback already. I > think we can make this happen with some fundraising effort. I'm willing to > provide the human resources and whatever incidental financing needs to > happen to secure a grant for rental. > > The main purpose of this type of system would be to enable field deployment > of "legacy mode" aggregators, like the Phase 4 Ground ARAP (Amateur Radio > Access Point). This is where traffic on any ham band, using FM or analog > gear, is digitized by a local "collecting" repeater, and is then sent to a > satellite from that repeater. FEMA and ARRL have expressed a lot of > interest and support for this in the past. Phase 4 Ground needs an ARAP in > order to support legacy radios. > > You don't have to personally have a microwave digital uplink. The > aggregator equipment does that part for you. > > This is most useful for public service and emergency communications. A > communications emergency is declared, someone (FEMA, Red Cross, motivated > ham volunteer) drops in the aggregator, and all ham traffic it hears is > sent to the satellite and then transmitted to the entire footprint. > > The downlink is 12-14GHz. This is not 10GHz, but is receivable by > individuals using very inexpensive gear. Traffic can be repeated over the > internet. > > What does this get us? > > An opportunity to do all the R&D for the aggregator and get some experience > with uplinks. > > What do we not have? > > A true ham band downlink. You can still receive the downlink yourself, or > you can get it over the internet from an earth station distributor. > > That's where we're at with *this* proposal. > > I think it's worth it to provide a US-based way to design, deploy, test, > and use real world aggregator equipment. We learn a lot about GEO comms and > figure out a lot of the ins and outs. > > Comment and critique welcome and encouraged. > > More soon! > -Michelle W5NYV > _______________________________________________ > 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. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb > > _______________________________________________ > 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. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb

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Re: [amsat-bb] Update: Rent GEO bandwidth for US
by KC9SGV 22 Aug '19

22 Aug '19

Here we go... ADALM Pluto receives up to 3.8 GHz https://www.analog.com/en/design-center/evaluation-hardware-and-software/ev… Bernard, KC9SGV Sent from my iPad > On Aug 21, 2019, at 10:02 PM, KC9SGV <kc9sgv(a)gmail.com> wrote: > > My Octagon quad LNB for direct reception: > Input: 10.7 GHz to 12.75 GHz (possibly higher) > L.O. : 9.75/10.6 GHz > Excellent noise ratio up to 0.1 dB > Gain: 60~65 dB > High frequency stability. > > Now... 12.75 GHz - 9.75 GHz (L.O.) = 3 GHz > Looking for an SDR dongle that can receive at 3 GHz. > Does this sound correct ? > > Bernard, > KC9SGV > > Sent from my iPad > >> On Aug 21, 2019, at 8:34 PM, Michelle Thompson via AMSAT-BB <amsat-bb(a)amsat.org> wrote: >> >> An arrangement on Echostar9 for 1MHz of bandwidth for up to 4 years of >> USA+Mexico+Canada coverage is on offer for $2000 a month. >> >> I'm putting together a grant proposal for ARRL, FEMA, and others to pay for >> at least year of access. I've gotten some positive feedback already. I >> think we can make this happen with some fundraising effort. I'm willing to >> provide the human resources and whatever incidental financing needs to >> happen to secure a grant for rental. >> >> The main purpose of this type of system would be to enable field deployment >> of "legacy mode" aggregators, like the Phase 4 Ground ARAP (Amateur Radio >> Access Point). This is where traffic on any ham band, using FM or analog >> gear, is digitized by a local "collecting" repeater, and is then sent to a >> satellite from that repeater. FEMA and ARRL have expressed a lot of >> interest and support for this in the past. Phase 4 Ground needs an ARAP in >> order to support legacy radios. >> >> You don't have to personally have a microwave digital uplink. The >> aggregator equipment does that part for you. >> >> This is most useful for public service and emergency communications. A >> communications emergency is declared, someone (FEMA, Red Cross, motivated >> ham volunteer) drops in the aggregator, and all ham traffic it hears is >> sent to the satellite and then transmitted to the entire footprint. >> >> The downlink is 12-14GHz. This is not 10GHz, but is receivable by >> individuals using very inexpensive gear. Traffic can be repeated over the >> internet. >> >> What does this get us? >> >> An opportunity to do all the R&D for the aggregator and get some experience >> with uplinks. >> >> What do we not have? >> >> A true ham band downlink. You can still receive the downlink yourself, or >> you can get it over the internet from an earth station distributor. >> >> That's where we're at with *this* proposal. >> >> I think it's worth it to provide a US-based way to design, deploy, test, >> and use real world aggregator equipment. We learn a lot about GEO comms and >> figure out a lot of the ins and outs. >> >> Comment and critique welcome and encouraged. >> >> More soon! >> -Michelle W5NYV >> _______________________________________________ >> 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. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb

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ARISS CONTACT UPDATE: The Children's Inn at NIH (National Institutes of Health), Bethesda, MD
by n4csitwo＠bellsouth.net 21 Aug '19

21 Aug '19

The ARISS contact with The Children's Inn at NIH (National Institutes of Health), Bethesda, MD that was scheduled to take place tomorrow, Aug. 22 at 17:16 UTC has been postponed due to last minute scheduling issues. It is in the process of being rescheduled for a future week. We will post a new date for the contact once it becomes available. Dave, AA4KN ARISS PR --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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Upcoming ARISS Contact Schedule as of 2019-08-21 22:00 UTC
by aj9n＠aol.com 21 Aug '19

21 Aug '19

Upcoming ARISS Contact Schedule as of 2019-08-21 22:00 UTC Quick list of scheduled contacts and events: The Children’s Inn at NIH (National Institutes of Health), Bethesda, MD (CASIS#3), telebridge via VK4KHZ The ISS callsign is presently scheduled to be NA1SS The scheduled astronaut is Drew Morgan KI5AAA Contact is now TBD (***) The ARISS webpage is at http://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 http://www.ariss.org/apply-to-host-an-ariss-contact.html ARISS Contact Applications (United States) For many years I have on purpose not given the actual hyperlinks; I assume the user would do a copy/paste into their favorite browser. I am now thinking that the browsers have all grown up and most should be able to handle the link. Please let me know you experience any issues. So now you should be able to directly click on the link. (***) 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 2019-08-21 22:00 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. http://www.amsat.org/amsat/ariss/news/arissnews.rtf http://www.amsat.org/amsat/ariss/news/arissnews.txt The successful school list has been updated as of 2019-08-15 16:00 UTC. http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf The ARISS webpage is at http://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 http://www.ariss.org/apply-to-host-an-ariss-contact.html ARISS Contact Applications (United States) The ARISS webpage is at http://www.ariss.org/ Note that there are links to other ARISS websites from this site. **************************************************************************************************************************************************************************** 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: http://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) http://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. ******************************************************************************* 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 http://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 congratulations the following mentors who have now mentored over 100 schools: Satoshi 7M3TJZ with 136 Francesco IKØWGF with 132 Gaston ON4WF with 123 Sergey RV3DR with 120 **************************************************************************** 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 1327. Each school counts as 1 event. Total number of ARISS ISS to earth school contacts is 1270. Each contact may have multiple schools sharing the same time slot. Total number of ARISS supported terrestrial contacts is 47. A complete year by year breakdown of the contacts may be found in the file. http://www.amsat.org/amsat/ariss/news/arissnews.rtf 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, Wyoming, American Samoa, Guam, Northern Marianas Islands, and the Virgin Islands. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ QSL information may be found at: http://www.ariss.org/qsl-cards.html ISS callsigns: DPØISS, IRØISS, NA1SS, OR4ISS, RSØISS **************************************************************************** Frequency chart for packet, voice, and crossband repeater modes showing Doppler correction as of 2005-07-29 04:00 UTC http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correctio… Check out the Zoho reports of the ARISS contacts https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415 **************************************************************************** Exp. 59 on orbit Christina Koch Aleksey Ovchinin Nick Hague KG5TMV Exp. 60 on orbit Luca Parmitano KF5KDP Alexander Skvortsov Drew Morgan KI5AAA **************************************************************************** 73, Charlie Sufana AJ9N One of the ARISS operation team mentors

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DVB-S2X Whitepaper by Newtec.
by KC9SGV 21 Aug '19

21 Aug '19

Hi All, It seems like DATV on a future IARU Region 2 GEO Hamsat might be incorporating the DVB-S2X standard. This whitepaper by Newtec is an easy read to explain the concepts involved. https://www.newtec.eu/frontend/files/application_note/newtec-market-trend-4… Bernard, KC9SGV Sent from my iPad

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