AMSAT-BB May 2019

139 participants
185 discussions

by Mr B r a d

Robert I have the smaller 3 element cushcraft dual band beamthe swr has all ways been high on it also... 1. Cushcraft dual band Beam (Robert Bruninga) From: Robert Bruninga <bruninga(a)usna.edu> To: AMSAT-BB <amsat-bb(a)amsat.org> Subject: [amsat-bb] Cushcraft dual band Beam Message-ID: <ccd4917772306d63074417ff122095ae(a)mail.gmail.com> Content-Type: text/plain; charset="UTF-8" Any success with a cushcraft A27010S dual band beam? Just got a new one and it tunes up perfectly to 1.1 SWR but only at 150.1 MHz. Nothing we do with the matching network can lower the frequency to 145 MHz where it is off-scale high SWR. We now added 1/2" sleeves to the driven element and threaded on #10-32 nuts on the end of all the wire elements to lower the resonance, but the best is still only at 148.2 MHz. Am going to try extended the two piece boom an inch and lastly will try to extend the matching element. Just wanted to see what others did to make this beam usable. Bob, Wb4APR *****************************************

3 years, 2 months

Re: [amsat-bb] Cushcraft dual band Beam - done

by Robert Bruninga

Finally after 4 days of trying absolutely everything to get from 151 MHz down to 145.8, including: Extending elements with threaded nuts on all. Extending driven element with 3/8" tips, extending boom as MFJ suggested and extending tuning tube, I got closer to 145 MHz (from original 151 MHz).. Got closer, but nothing below 2:1. Finally made a new center rod for the matching section that is 1" longer than the one provided. THAT SOLVED IT PERFECTLY. Got nice 1.1 SWR at 145.8 MHz as desired with everything restored to the original antenna. And now plenty of tuning range across all of two meters. So there simply was not enough capacity in the tuning stub! Bob, WB4APR -----Original Message----- From: Robert Bruninga <bruninga(a)usna.edu> Sent: Wednesday, May 29, 2019 3:49 PM To: AMSAT-BB <amsat-bb(a)amsat.org> Cc: Robert Bruninga <bruninga(a)usna.edu> Subject: Cushcraft dual band Beam Any success with a cushcraft A27010S dual band beam? Just got a new one and it tunes up perfectly to 1.1 SWR but only at 150.1 MHz. Nothing we do with the matching network can lower the frequency to 145 MHz where it is off-scale high SWR. We now added 1/2" sleeves to the driven element and threaded on #10-32 nuts on the end of all the wire elements to lower the resonance, but the best is still only at 148.2 MHz. Am going to try extended the two piece boom an inch and lastly will try to extend the matching element. Just wanted to see what others did to make this beam usable. Bob, Wb4APR

3 years, 2 months

Upcoming ARISS contact with Moriah Central School, Port Henry, NY

by n4csitwo＠bellsouth.net

An International Space Station school contact has been planned with participants at Moriah Central School, Port Henry, NY on 04 Jun. The event is scheduled to begin at approximately 16:22 UTC. It is recommended that you start listening approximately 10 minutes before this time.The duration of the contact is approximately 9 minutes and 30 seconds. The contact will be a telebridge between OR4ISS and ON4ISS. The contact should be audible over Belgium and adjacent areas. Interested parties are invited to listen in on the 145.80 MHz downlink. The contact is expected to be conducted in English. Moriah Central School is located in the foothills of the Adirondack Mountains in upstate New York. It is a K-12 public school with nearly 800 students and 50 teachers. Located near the beautiful Lake Champlain, Moriah Central School is home of the Vikings! With many successful academic and athletic programs such as football, basketball, cheerleading, drama club, band, chorus and many student clubs, many opportunities are available for all students. In addition to a new educational technology center, the district is proud of our distance learning lab, amateur radio station, computer programming classes, and other programs designed specifically in helping the surrounding communities in Essex County. Moriah Central School District proclaims its mission to be the provision of a safe, supportive, and academically challenging environment for all students in our community. We are dedicated to the goals of educational excellence, preparation for college and careers, and the development of a high level of citizenship. Participants will ask as many of the following questions as time allows: 1. What is the purpose of the International Space Station and why is it a value to all of humanity? 2. What is the most amazing thing you have seen from the space station? 3. What do you get to do in your free time when you are not working? 4. What types of computer programming languages were used to write the software on board the International Space Station? 5. What is your favorite piece of hardware to use on the space station and what does it do? 6. What types of computers are you using on board, and what operating systems do they run? 7. Do you get to listen to music in space, and if so what do you all like to listen to? 8. What is the most difficult and dangerous thing about living in space? 9. How many people can fit on board the space station safely? 10. What is your favorite science experiment on board? 11. What do you think the importance of future space stations will be? 12. What is the importance of Amateur Radio on the Space Station? 13. What is the status of CIMON (Simon) the Artificially Intelligent robot that was sent to the ISS? 14. How did you become an Astronaut? Does your training for space start right away or do you have to move up in ranking? 15. What is your favorite food in space? 16. Are there any manmade objects on earth you can see from the space station? 17. Do you keep a journal of everything you do on board to remember in the future? 18. What can scientists do on Earth to help you on the Space Station? 19. What is the best part of working with people from different countries every day? 20. What have you learned the most from living and working in Space? PLEASE CHECK THE FOLLOWING FOR MORE INFORMATION ON ARISS UPDATES: Visit ARISS on Facebook. We can be found at Amateur Radio on the International Space Station (ARISS). To receive our Twitter updates, follow @ARISS_status Next planned event(s): 1. 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 a go for Wed 2019-06-05 07:50 UTC 2. Dum detí a mládeze Olomouc (House of Children and Youth Olomouc), Olomouc, Czech Republic, direct via OK2KWX The ISS callsign is presently scheduled to be OR4ISS The scheduled astronaut is Nick Hague KG5TMV Contact is go for: Sat 2019-06-08 13:05:59 UTC 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 (STEM) 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. Thank you & 73, David - AA4KN --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

3 years, 2 months

Cushcraft dual band Beam

by Robert Bruninga

Any success with a cushcraft A27010S dual band beam? Just got a new one and it tunes up perfectly to 1.1 SWR but only at 150.1 MHz. Nothing we do with the matching network can lower the frequency to 145 MHz where it is off-scale high SWR. We now added 1/2" sleeves to the driven element and threaded on #10-32 nuts on the end of all the wire elements to lower the resonance, but the best is still only at 148.2 MHz. Am going to try extended the two piece boom an inch and lastly will try to extend the matching element. Just wanted to see what others did to make this beam usable. Bob, Wb4APR

3 years, 2 months

EM57/67 Rove Details

by Michael Whitman

AMSAT Friends, Next Tuesday, June 4, 2019, I’ll be on the EM57/67 gridline for the following passes: Satellite Footprint (UTC) Max Elv. AO-92 15:53 - 16:00 45º AO-91 17:28 - 17:39 69º SO-50 19:03 - 19:06 12º AO-91 19:08 - 19:13 14º SO-50 20:40 - 20:49 72º I’ll post updates to my Twitter account throughout the day: https://twitter.com/MWimages <https://twitter.com/MWimages> Thanks, Michael N4DCW -- Michael Whitman (904) 557-8243 images(a)michaelwhitman.net <mailto:[email protected]> Louisville, KY, USA

3 years, 2 months

Re: [amsat-bb] FUNcube Data Warehouse Development

by David G0MRF

Wow.... I thought my jobs list was large............ 73 David -----Original Message----- From: David Johnson <dave(a)g4dpz.me.uk> To: amsat-bb <amsat-bb(a)amsat.org> Sent: Wed, 29 May 2019 11:16 Subject: FUNcube Data Warehouse Development Hi, I've finally got time to do more work development work on the new warehouse, as I've retired from full-timesoftware development and can spend more time in the shack, XYL allowing :-) In the longer term we plan to move the warehouse to Amazon Web Services to give us more residence and share development tasks with a larger team. Current task List: - FUNcube WOD csv export - Fix JY1Sat Frame counts - FUNcube High Res - Add 'position' to rankings - Fix Nayif-1 'last command' - High Res for FC1 - HIgh Res for Nayif1 - High Res for JY1Sat - Mobile menu - ESEO MinMax - ESEO WOD - Age colur rankings - Fitter Msgs for Nayif-1 - Migrate all wars to individual wars to shorten deployment time - Extract data for PhD Student - Move Historical UKube data to New Server including UI - Integrate Chip's Maps - Handle ESEO ESA WOD Payloads - Change image sizes There may be some short periods of service disruption as I make changes but as always, the Dashboards will catch up when service resumes. 73 Dave, G4DPZ

3 years, 2 months

FUNcube Data Warehouse Development

by David Johnson

Hi, I've finally got time to do more work development work on the new warehouse, as I've retired from full-time software development and can spend more time in the shack, XYL allowing :-) In the longer term we plan to move the warehouse to Amazon Web Services to give us more residence and share development tasks with a larger team. Current task List: FUNcube WOD csv export Fix JY1Sat Frame counts FUNcube High Res Add 'position' to rankings Fix Nayif-1 'last command' High Res for FC1 HIgh Res for Nayif1 High Res for JY1Sat Mobile menu ESEO MinMax ESEO WOD Age colur rankings Fitter Msgs for Nayif-1 Migrate all wars to individual wars to shorten deployment time Extract data for PhD Student Move Historical UKube data to New Server including UI Integrate Chip's Maps Handle ESEO ESA WOD Payloads Change image sizes There may be some short periods of service disruption as I make changes but as always, the Dashboards will catch up when service resumes. 73 Dave, G4DPZ

3 years, 2 months

AiSat-1 digipeating?

by Ted Krempa

Hi Rick and all, any updates on this sat? Is it still functioning as a digipeater like ISS? Tnx, Ted K7TRK -----Original Message----- From: AMSAT-BB [mailto:[email protected]] On Behalf Of saguaroastro via AMSAT-BB Sent: Thursday, April 11, 2019 9:59 PM To: AMSAT -BB Subject: [amsat-bb] AiSat-1 heard over Arizona All, just had a 70° pass of AiSat-1, so I thought I'd give it a go. I heard the first packet when it was only 3° above the horizon, but no decode. I heard about 10 packets during the 10 minute pass, but none decided. I also set about that many beacons up, but none were receive by the sat.I was using my D72A into an ELK lp.What have the rest of you been using and have you had any success?73Rick Tejera (K7TEJ)Saguaro Astronomy ClubWww.saguaroastro.orgThunderbird Astronomy ClubWww.w7tbc.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. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb

3 years, 2 months

Deleted AO-91 recording 5-24-2019

by Bob Keating

By accident I deleted my recording of the AO-91 pass on Friday May 24 at 19:57 UTC. I know some of you have been very helpful in the past when I pull a bonehead move like this. Does anyone have a recording of this pass or can tell me where I may find a recording. Thank you so much! 73, Bob N6REK

3 years, 2 months

Re: [amsat-bb] FW: EA Antenna Duosat 'arrow style' hand held

by Kenneth P Alexander

No word on performance, but I'd be willing to bet it's as least as good as an Arrow. It's expensive compared to an Arrow, especially an Arrow with no diplexer, but I'd still love to try it. I've never been fond of the way Arrow elements screw together to mount on the boom. This is much more robust, and they can be removed with an Allen wrench. The biggest disadvantage I see is that it doesn't look like you can connect coax to it with BNC connectors. It appears you have to strip your coax cable and attach the leads to a pair of screw terminals. That's a potential point of mechanical failure and water entry if you don't seal and secure things properly. 73, Ken , VE3HLS On Tue, May 28, 2019 at 8:58 AM Ted Krempa via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > > > Whilst perusing the new DX Engineering catalog, I see a new ‘arrow style’ > hand held using loops and supposedly weighing only about 1 ¾ lbs. It > appears > well constructed. A bit pricey… > > > > Any thoughts on performance, etc.? > > > > 73, Ted > > K7TRK > > _______________________________________________ > 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 >

3 years, 2 months

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AMSAT-BB May 2019