AMSAT-BB January 2020

93 participants
122 discussions

Re: [amsat-bb] [Video] Preamp test in front of radio / satellite ground station build update

by John Brier

SSB Electronics has mast mount preamps that some people prefer over ARR, that I assume are comparable. But my googling produced a website that has an error loading. 73, John Brier KG4AKV On Tue, Jan 28, 2020 at 4:05 PM Steve A <onmontauk(a)gmail.com> wrote: > > Now that Advanced Receiver Research has stopped production, is there a suitable replacement? I am looking for my ground station. > Steve W2AKK > > On Tue, Jan 28, 2020 at 3:56 PM John Brier via AMSAT-BB <amsat-bb(a)amsat.org> wrote: >> >> Here is a little update on my satellite ground station build project >> and a demonstration of a test I did with my Advanced Receiver Research >> 2 meter preamplifier. >> >> https://youtu.be/BNai203eUnI >> >> 73, John Brier KG4AKV >> _______________________________________________ >> 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, 6 months

Re: [amsat-bb] Arrow Antennas for terrestrial work

by Edward R Cole

John, Not for permanent home station use, but I have used the six UHF element Arrow as part of a rover in VHF Contest operation: http://www.kl7uw.com/RoverJune06.jpg On the far side of the crossboom. Had to mount facing sideways as the 3-element 6m beam was too wide to be street-legal. No rotator (used truck). Also six element 2m and 18 element 900-MHz loop yagi. Made 81 mile contact using 15w on 927.50 FM from local 400-foot hill. The screw-on elements are subject to coming lose with vibration, so one would need a way to permanently tighten them (lock-tite on threads?). 73, Ed - KL7UW From: John Geiger <af5cc2(a)gmail.com> To: VHF Contesting Reflector <vhfcontesting(a)contesting.com>, VHF Reflector <vhf(a)w6yx.stanford.edu>, AMSAT <amsat-bb(a)amsat.org> Subject: [amsat-bb] Arrow Antennas for terrestrial work Most of the reviews I have seen for the Arrow Antenna dualband yagis are regarding their use on the satellites, which I think is what they are mainly made for. Has anyone on the list used one of their dualband antennas mounted permanently for terrestrial work as well? They do sell a mounting bracket for permanent mounting to a mast. Do they seem well made enough to withstand the outside elements for a few years on end? Do they seem to perform as well as other antennas which have approximately the same boom size and number of elements? 73 John W5TD 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubususa(a)gmail.com

2 years, 6 months

Arrow For Other Uses

by Brad Smith

I have used my Arrow to contact repeaters and for simplex. Works fine. I would replace the studs and screws with stainless and also place bronze wave washers between each element and the boom. But, I don't know about leaving it out in winter weather. Brad Smith KC9UQR

2 years, 6 months

Crew packing Cygnus for departure (and launch of HuskySat)

by Chris Thompson

https://blogs.nasa.gov/spacestation/2020/01/27/science-soon-resumes-on-cosm… The space station blog says that the crew are packing the Cygnus for departure. It's my understanding that it will boost to a higher orbit and release its small sats, including AMSAT-NAs collaboration with the University of Washington - HuskySat. ( http://www.arrl.org/news/huskysat-1-successfully-lifted-into-space) So it you want to collect telemetry on 70cm from a cubesat, using FoxTelem, then this is your chance. Prepare your station for reception. The blog says that the Cygnus spacecraft will depart "at the end of the week". 73 Chris -- Chris E. Thompson chrisethompson(a)gmail.com g0kla(a)arrl.net

2 years, 6 months

Fwd: Re: WB4APR off line till march (amsat)

by Paulo PV8DX

It will be in my prayers Come back soon. Good recovery 73 de Paulo PV8DX Em 25/01/2020 17:03, Robert Bruninga via AMSAT-BB escreveu: > WB4APR will be offline till march. > > I found a soft ball size tumor in Oct. After 22 procedures and Dr visits, > they have done ever increasing invasive biopsies and even Cancer center at > Johns Hopkins cannot still identify. And they cannot do anything until they > can identify the type and how to treat it. But now that it is the size of a > football in my lower abdomen, They have scheduled major surgery on Monday to > take it out anyway along with other stuff it is touching. > > I must deliver PSAT3 for launch by 28 Feb. Been working full time plus > weekends and holidays but only at 10% body energy level. Its not ready. So > I hope recovery is possible quickly so I can finish. It is identical to > PSAT2 function but without the stupid 5v/4v power mistake. > > So, don’t expect any email responses from me till march. > > Bob, WB4APR > _______________________________________________ > 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, 6 months

TS-2000X For Sale

by Roger - W7TZ

I've decided to let go of my TS-2000x. This radio is just back from MTS, 1/23/20, after a thorough checkout, minor repair and alignment. Excellent condition all around. (Please feel free to ask questions. Pics available). Includes hand mic, power cord and 4 band external acc assy. $1250 shipped conus. Paypal ai7rogerroger(a)gmail.com Thanks,73,Roger 73, Roger W7TZ CN83ia

2 years, 6 months

Next Rocket Lab Launch

by Wendy and Terry Osborne

Next Rocket Lab launch scheduled for Friday 31st January 00:00 to 04:00 UTC (13:00 to 17:00 NZDT). See: https://www.rocketlabusa.com/missions/next-mission/ Cheers, Terry Osborne

2 years, 6 months

Re: [amsat-bb] WB4APR off line till march (amsat)

by Nicholas Mahr KE8AKW

Best wishes to you and your family on your recovery Bob. You have done so much good for AMSAT over the many years with all the satellites you have gotten into orbit. We all appericate your efforts over the years of trying to get new stuff launched despite all the massive roadblocks in your way of doing so. Looking forward to PSAT-3 with the SSTV downlink of the earth! 73 Nick KE8AKW

2 years, 6 months

WB4APR off line till march (amsat)

by Robert Bruninga

WB4APR will be offline till march. I found a soft ball size tumor in Oct. After 22 procedures and Dr visits, they have done ever increasing invasive biopsies and even Cancer center at Johns Hopkins cannot still identify. And they cannot do anything until they can identify the type and how to treat it. But now that it is the size of a football in my lower abdomen, They have scheduled major surgery on Monday to take it out anyway along with other stuff it is touching. I must deliver PSAT3 for launch by 28 Feb. Been working full time plus weekends and holidays but only at 10% body energy level. Its not ready. So I hope recovery is possible quickly so I can finish. It is identical to PSAT2 function but without the stupid 5v/4v power mistake. So, don’t expect any email responses from me till march. Bob, WB4APR

2 years, 6 months

Upcoming ARISS contact with Primary School "Jovan Jovanovic Zmaj", Sremska Mitrovica, Serbia

by n4csitwo＠bellsouth.net

An International Space Station school contact has been planned with participants at Primary School "Jovan Jovanovic Zmaj", Sremska Mitrovica, Serbia on 28 Jan. The event is scheduled to begin at approximately 15:51 UTC. The duration of the contact is approximately 9 minutes and 30 seconds. The contact will be direct between OR4ISS and YU7BPQ. The contact should be audible over Serbia 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. Story: Primary school Jovan Jovanovic Zmaj from Sremska Mitrovica, situated on the left bank of the Sava river in the middle of the region of Srem, is a vibrant, friendly and nurturing school with 65 years of tradition and experience. The motto of the school based on the lyrics of a famous Serbian poet Jovan Jovanovic Zmaj: "Where I stopped, you carry on", so at school they try to continue the tradition of open-minded, creative, innovative, child-oriented learning and teaching. Based on the past generations' legacy, the school is striving towards shaping cosmopolitan citizens with highly developed tolerance within a multinational society while employing a spectre of techniques to keep up with the modern, high-tech approaches. The school offers a broad, however, balanced curriculum in a stimulating environment to our 1044 pupils, supported by a wide range of after school clubs and quality school trips. They are always seeking ways to bring to life STEM and foreign language subjects via real-life situations. This year pupils, teachers, and the HAM operators who support them are as busy as bees, or perhaps as the ISS crew, because they want to talk to the astronauts on the ISS so they are learning about space through various subjects and activities. It is a part of their educational proposal with ARISS. There are fun classes, costumes, Milky Way installation, drawings, maths, history geography and more! Their friends from the radio amateur club YU7BPQ are helping them with the radio contact! They made a huge antenna! Radio communication is for most students and teachers a new experience. Furthermore, they are learning how to use an amateur radio station! Just imagine how thrilling it is to press the button and hear some noise before you hear the voice behind it! Old school though good stuff! You can follow all their activities on the project blog page https://022tothemoonandback.zmajsm.edu.rs/home/about-project/ Participants will ask as many of the following questions as time allows: 1. Which planet would you like to visit and why? 2. What manmade wonders can you see from space? 3. What is the furthest spot on the horizon and what can you see around you? 4. Why is the temperature at ISS at constant 38 degrees? 5. What do you do when you cut yourself? 6. What do you do when you can't sleep? 7. What kind of music do you listen to and who chooses it? 8. What do you do for fun? 9. What is your favourite thing about space? 10. Is your space suit comfortable? 11. Is life in space difficult? 12. Can you eat ice cream in space? 13. What is on today's menu? 14. Do you prefer taking off or landing and why? 15. What do you miss most about Earth? 16. Can you see thunders and lightening on Earth? 17. What would you do if you happen to drift away from ISS? 18. What do you do when you get ill? 19. What does it feel like when you get back to Earth? 20. How does the Earth look from above? 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): TBD 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

2 years, 6 months

← Newer
1
2
3
4
5
6
7
...
13
Older →

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

AMSAT-BB January 2020