AMSAT-BB September 2019

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144 discussions

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cube sat model

by Bob- W7LRD

Hi All-Is there a cube sat model, mock up etc, available anywhere 73 Bob W7LRD

1 year, 4 months

AMSAT: RFI from LED bulbs?

by Robert Bruninga

I am hearing reports of RFI from these LED bulbs. Not just HF, but also VHF. If you can make any quantitative assessments of such RFI, please let me know. And the amazing thing is that at VHF you will never notice it because RFI is noise power and it is noise power that keeps a squelch CLOSED. Manuallly open the squelch and sometimes RFI will show full scale on the S meter yet not open the squelch. And on my radios, when the squelch is closed, the S meter is inactive and shows 0. Bob Bruninga, WB4APR

2 years, 2 months

Re: [amsat-bb] AO92 L/V mode??

by Fernando Ramirez

> Hi Perry! > > AO-92 was kept in U/V mode in order to allow operators more opportunities > to work N6O/mm from rare grid DM02. The operation will last only one day. > > The decision was announced over the AMSAT Twitter and Facebook accounts. I > don't recall or can't find if it was posted on the -BB. Might be a good > idea for next time. > > 73 > Fernando KF7R > > On Sun, Sep 22, 2019, 12:52 AM Perry Yantis via AMSAT-BB < > amsat-bb(a)amsat.org> wrote: > >> I stayed up late tonight to work AO92 L/V mode only to find that it was >> still in L/V mode.Then I got on EO88 a few minutes later and was told that >> L/V mode would be on Wednesday this week.It would be nice it this >> information was posted on the BBS BEFORE the weekend gets here.Also why the >> change anyway????? >> Perry WB8OTH >> >> py41(a)att.net >> sent from my Apple Macbook Pro >> _______________________________________________ >> 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 >> >

2 years, 7 months

AO92 L/V mode??

by Perry Yantis

I stayed up late tonight to work AO92 L/V mode only to find that it was still in L/V mode.Then I got on EO88 a few minutes later and was told that L/V mode would be on Wednesday this week.It would be nice it this information was posted on the BBS BEFORE the weekend gets here.Also why the change anyway????? Perry WB8OTH py41(a)att.net sent from my Apple Macbook Pro

2 years, 7 months

Elmer needed in EM22

by David Loftus

Received an email from a ham in Longview TX (EM22) who's interested in sats, has a Alinco DJ-G7 and Arrow, but has been unable to make any contacts. I can point him to the usual online resources, of course, but hands-on mentoring would be better. Anyone? Thanks, Dave K5IX DL99

2 years, 11 months

Re: [amsat-bb] AO-92

by Roy Dean

https://network.satnogs.org/observations/1054217/ It appears that one of the Chinese sats' telemetry was part of the problem. But it appears that the repeater was off for almost 2 minutes at the beginning of the pass, which is atypical for this time of day. --Roy K3RLD Did everyone experience the fluttery downlink on AO-92 just now (~1635 > UTC) or was it just me? Steve AI9IN EM79ji

2 years, 11 months

AO-92

by skristof＠etczone.com

Did everyone experience the fluttery downlink on AO-92 just now (~1635 UTC) or was it just me? Steve AI9IN EM79ji

2 years, 11 months

Upcoming ARISS Contact Schedule as of 2019-09-30 17:00 UTC

by aj9n＠aol.com

Upcoming ARISS Contact Schedule as of 2019-09-30 17:00 UTC Quick list of scheduled contacts and events: The Southwest State University of Kursk, Kursk, Russia, direct via UB3WCL The ISS callsign is presently scheduled to be RSØISS The scheduled astronaut is Aleksey Ovchinin Contact is go for Sat 2019-09-28 14:35 UTC UAE school #2 with Space Flight participant, direct via A68MBR The ISS callsign is presently scheduled to be RSØISS The scheduled astronaut is Hazza Al Mansour Contact is go for Sat 2019-09-28 11:20 UTC Amur State University, Blagoveshchensk, Russia, direct via TBD The ISS callsign is presently scheduled to be RSØISS The scheduled astronaut is Aleksey Ovchinin Contact is go for Sat 2019-09-28 14:35 UTC Sonoma County Main Library, Santa Rosa, CA, telebridge via K6DUE The ISS callsign is presently scheduled to be NA1SS The scheduled astronaut is Nick Hague KG5TMV Contact is go for: Tue 2019-10-01 19:53:13 UTC 82 deg UAE school #3 with Space Flight participant, direct via TBD The ISS callsign is presently scheduled to be RSØISS The scheduled astronaut is Hazza Al Mansour Contact is go for Wed 2019-10-02 09:45 UTC School in Russia TBD direct via TBD The ISS callsign is presently scheduled to be RSØISS The scheduled astronaut is TBD Contact is go for Tue 2019-10-08 06:05 UTC Bampton School, Bampton, United Kingdom, direct via G2LV The ISS callsign is presently scheduled to be OR4ISS The scheduled astronaut is Drew Morgan KI5AAA or Luca Parmitano KF5KDP Contact is go for: Tue 2019-10-08 12:51:26 UTC 27 deg (***) Watch for live stream at https://live.ariss.org Collège Robert Doisneau, Sarralbe, France, direct via F6KFT The ISS callsign is presently scheduled to be OR4ISS The scheduled astronaut is Luca Parmitano KF5KDP Contact is go for: Tue 2019-10-08 14:29:21 UTC 53 deg (***) Watch for MAI-75 SSTV sessions: Wed 2019-10-09 09:50 to 14:00 UTC (***) Thu 2019-10-10 08:55 to 15:15 UTC (***) AMSAT-UK International Space Colloquium Sat 2019-10-12 to Sun 2019-10-13 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 2019-09-30 17:00 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 2019-09-27 17:00 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 123 (***) **************************************************************************** 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 1336. (***) Each school counts as 1 event. Total number of ARISS ISS to earth school contacts is 1279. (***) 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 Exp. 61 on orbit (***) Oleg Skripochka Jessica Meir Hazza Al Mansour (Space Flight Participant) **************************************************************************** 73, Charlie Sufana AJ9N One of the ARISS operation team mentors

2 years, 11 months

Pi zero w

by Floyd Rodgers

Can anyone confirm the Pi zero has enough power to run direwolf to decode ISS slow scan and aprs from sats using a usb RTL sdr? Floyd KC5QBC

2 years, 12 months

AMSAT News Service Special Bulletin - AO-92 Remaining in U/v For Potential Emergency Traffic

by JoAnne K9JKM

AMSAT NEWS SERVICE SPECIAL BULLETIN ANS-272.02 In this edition: * AO-92 Remaining in U/v For Potential Emergency Traffic SB SAT @ AMSAT $ANS-272.02 ANS-272 AMSAT News Service Special Bulletin AMSAT News Service Bulletin 272.02 From AMSAT HQ KENSINGTON, MD. DATE September 29, 2019 To All RADIO AMATEURS BID: $ANS-272.02 Drew Glasbrenner, KO4MA, AMSAT VP Operations has received a request from amateurs involved with emergency communications in the Azores, requesting we forego L/v operation on AO-92 this week. Hurricane Lorenzo is expected to pass through the Azores as a Cate- gory 4 storm Tuesday and Wednesday, and they are requesting AO-92 remain in U/v for potential emergency traffic. Please be aware of and yield to any emergency traffic, on any satellite, coming from the area during this time. Passes covering the Azores and Portugal are the most critical. We realize that there have been a few moves and cancellations for this mode recently, and I ask for understanding and cooperation. Emergency use is always first priority, and AMSAT is happy to assist in any way we can. [ANS thanks Drew Glasbrenner, KO4MA, AMSAT VP Operations for the above information] /EX

2 years, 12 months

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AMSAT-BB September 2019