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CX2SA > SATDIG 08.02.17 16:41l 1023 Lines 35428 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: Back from VE8 (David Maciel (XE3DX))
2. Re: Helical Antenna for 2-meters (Edward R Cole)
3. Re: Helical Antenna for 2-meters (Dave Mann)
4. recomendation brushless controlier (Todd Deckard)
5. Wx sats (keith mcdonnell)
6. Re: Helical Antenna for 2-meters (Edward R Cole)
7. Upcoming ARISS contact with Space Exploration Educators
Conference, Houston, Texas (n4csitwo@xxxxxxxxx.xxxx
8. Upcoming ARISS contact with Palmetto Scholars Academy, North
Charleston, SC (n4csitwo@xxxxxxxxx.xxxx
9. ISS uplink for broadcast TV (Mvivona)
10. FLUCTUATIONS ON ROTORS WHILE TRANSMITTING (jeffory broughton)
11. Nayif-1 launch announcement (Graham Shirville)
----------------------------------------------------------------------
Message: 1
Date: Tue, 7 Feb 2017 12:36:41 -0600
From: "David Maciel (XE3DX)" <david.xe3dx@xxxxx.xxx>
To: Gabriel Zeifman <gabrielzeifman@xxxxx.xxx>
Cc: Grupo Amsat BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Back from VE8
Message-ID:
<CA+3j0OPz5RQcRSW1h9BTwHWT7wz_n-6XN=D2vPEjAexJRt2kdQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Always do a good job, Congratulations Gabe, for my geographic location and
antennae work very little in great travel miles and grids I am happy, you
help many people to get new grids. I hope to work for you when the dream of
taking the lead (V31) is fulfilled. Thanks for the new grids on lotw.
XE3DX
David (Dave)
David Maciel XE3DX
*http://www.qsl.net/xe3dx/ <http://www.qsl.net/xe3dx/>*
*david.xe3dx@xxxxx.xxx <david.xe3dx@xxxxx.xxx>*
2017-02-07 12:17 GMT-06:00 Gabriel Zeifman <gabrielzeifman@xxxxx.xxx>:
> Hello fellow bird trackers and sky talkers,
>
> I have safely returned to EM15 from the reaches of the sub-Arctic. What a
> great trip with 1,140 contacts in the log (over 900 already with
> confirmations in LoTW).
>
> The trip started out very well filling in many holes in holes in many
> people's 488 maps in DN land and a bit of EN land.
>
> After crossing the border, many never before heard grids were activated.
> The real fun began after crossing the 60th Parallel into the Northwest
> Territories and into DP land, a field that most people had never worked.
>
> The conditions were great, temperatures weren't absurd (don't get me wrong,
> still damn cold). The Winter Roads I did get on were great (lots of fun
> working from the Detah Winter Road on Great Slave Lake in DP22). Nothing
> greater than working across the Atlantic while on an ice road under the
> northern lights... DP00 was definitely the most absurd grid I visited, on
> the Trout Lake Winter Road. Next time I'll have to go further and get into
> CP90.
>
> Everything seemed to go very well up until around day three in VE8 when all
> of my coax jumpers began acting up. I still managed to get on some passes
> with this setup and make some great contacts. It eventually got bad enough
> where I had one jumper that seemed to work alright and the whip on my car
> and used that for 2m, basically limiting me to FO-29 (where I was very
> quiet most of the time).
>
> Upon getting into BC, John K8YSE found Tim VE7XIX (former VE5SAT, AC2GK). I
> met up with Tim in Fort Saint John, BC and he had everything we needed to
> make a temporary repair on two of my jumpers. Thanks to Tim the portion
> between BC and Portland, OR was saved (solder and lots of gorilla tape).
>
> Upon reaching Oregon and California, thanks to Clayton W5PFG and Steve N9IP
> I was able to get some new coax jumpers.
>
> The drive down the coast and through the desert was great, many rare grids
> activated. A memorable time was driving through LA and listening to the
> 147.435 repeater and checking into the "Bong Hit Net" at 4:20PM.
>
> It was great to meet many hams throughout the trip, in both the US and
> Canada. Especially fun was attending the Palm Springs Hamfest and meeting
> many SoCal sat ops (and a certain displaced 9 lander). My buddy Ethan also
> passed his tech at at the hamfest and will soon be KE0xxx and hopes to get
> on the birds soon. Was great to meet John K8YSE in Mesa and get EN91 as a
> /r grid (easiest /r grid I've ever gotten).
>
> All contacts are uploaded to LoTW. If you are missing anything, now would
> be a good time to start emailing. Big thanks to Dave KG5CCI, Fernando
> NP4JV, and Paul N8HM for being my QSL managers. Those three received my
> logs via Iridium messages and uploaded. If you enjoyed receiving instant
> QSLs from the sub-Arctic out of range of any terrestrial networks, thank
> those three, it wouldn't have been possible without them.
>
> Thanks to all for all the contacts, it was a ton of fun and I look forward
> to the next one (I'm itching to use V31NJ, hint hint)!
>
> 73,
> Gabe
> NJ7H
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 2
Date: Tue, 07 Feb 2017 15:23:27 -0900
From: Edward R Cole <kl7uw@xxxxxxxxx.xxx>
To: AMSAT-BB@xxxxx.xxx
Subject: Re: [amsat-bb] Helical Antenna for 2-meters
Message-ID: <201702080023.v180NS1F023019@xxxxxxxxx.xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Just scale the dimensions proportionally (except wire diameter);
ratio = 144/435
I built a 14 turn 437 MHz helical back in 1996 to receive the MGS
beacon and built a 2.4 GHz 6-turn helical for 33-inch offset dish
feed for AO-40. Plenty information in Amsat Archives. Original
Kraus-W8JK design is optimistic in gain calculation.
http://www.kl7uw.com/Satellite%20feed.jpg
W9EK had good construction hints in prior publications.
For receive-only do not sweat getting a good SWR. I used a 1/4
wavelength long 1/8 inch wide brass strip, run from connector to
beginning turn of the helix for impedance matching. Space the point
of connection to the helix about 3/16 inch above the ground plane
reflector. Natural impedance of a helix is 140-ohm.
On air experience with the 432 helix was that a ten element CP
crossed element yagi is better. But if you desire CP the helix is a
natural, though not perfect.
73, Ed - KL7UW
http://www.kl7uw.com
Dubus-NA Business mail:
dubususa@xxxxx.xxx
------------------------------
Message: 3
Date: Tue, 7 Feb 2017 18:45:27 -0600
From: Dave Mann <cwo4mann@xxxxxxx.xxx>
To: Edward R Cole <kl7uw@xxxxxxxxx.xxx>
Cc: AMSAT-BB@xxxxx.xxx
Subject: Re: [amsat-bb] Helical Antenna for 2-meters
Message-ID: <6C37BE5B-767F-496B-ABFF-DD55E8646A69@xxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
I just finished assembly of the Cushcraft cross-polarized yagi which I
bought from a fellow Ham. It was like new. Now I remember what I really
didn't like like about that Antenna. I put one together back in 1978 or
thereabouts. Putting the phasing harnesses on was quite the job! I managed
to remember curses in four or five different languages (tnx Army language
school). Anyway it's all together and I mounted it vertically on a 10
piece of pvc pipe for testing. SWR was almost 1:1 over the range 432.5 to
437.0 then rose slightly as I approached 437 MHz. I'm a happy guy now.
Next project is either the 2-m Helical we've discussed here, or two
3-element yagis with circular polarization. I already have the yagis, so
that would be a no cost option.
Thoughts anyone?
73
Dave N4CVX
Sent from my iPad
> On Feb 7, 2017, at 18:23, Edward R Cole <kl7uw@xxxxxxxxx.xxx> wrote:
>
> Just scale the dimensions proportionally (except wire diameter);
>
> ratio = 144/435
>
> I built a 14 turn 437 MHz helical back in 1996 to receive the MGS beacon
and built a 2.4 GHz 6-turn helical for 33-inch offset dish feed for AO-40.
Plenty information in Amsat Archives. Original Kraus-W8JK design is
optimistic in gain calculation.
> http://www.kl7uw.com/Satellite%20feed.jpg
>
> W9EK had good construction hints in prior publications.
>
> For receive-only do not sweat getting a good SWR. I used a 1/4 wavelength
long 1/8 inch wide brass strip, run from connector to beginning turn of the
helix for impedance matching. Space the point of connection to the helix
about 3/16 inch above the ground plane reflector. Natural impedance of a
helix is 140-ohm.
>
> On air experience with the 432 helix was that a ten element CP crossed
element yagi is better. But if you desire CP the helix is a natural, though
not perfect.
>
> 73, Ed - KL7UW
> http://www.kl7uw.com
> Dubus-NA Business mail:
> dubususa@xxxxx.xxx
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Tue, 7 Feb 2017 19:12:14 -0600 (GMT-06:00)
From: Todd Deckard <twdeckard@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] recomendation brushless controlier
Message-ID:
<24399600.18684.1486516334446@xxxxxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Captain Ramius: It reminds me of the heady days of Sputnik and Yuri Gagarin
when the world trembled at the sound of our rockets. Now they will tremble
again - at the sound of our silence. The order is: engage the silent drive.
https://www.youtube.com/watch?v=TmOqbiybfzY
I suspect the viscous drag would be so large so as to make the energy
requirement impractical for a small cubesat. For a spinning gyro you only
have to replenish the rotational momentum losses plus the very small amount
of bearing friction.
Todd
>From kd2bd at yahoo.com Tue Feb 7 15:35:48 2017
From: kd2bd at yahoo.com (John Magliacane)
Date: Tue, 7 Feb 2017 15:35:48 +0000 (UTC)
Subject: [amsat-bb] recomendation brushless controlier
References: <1759231051.3921420.1486481748308.ref@xxxx.xxxxx.xxx>
Message-ID: <1759231051.3921420.1486481748308@xxxx.xxxxx.xxx>
On Tue, 2/7/17, Nick Pugh <quadpugh at bellsouth.net> wrote:
> The sat team is looking recommendations for a brushless motor controller for
> their momentum wheel. Does the community have any recommendations for a
> controller?
How about the "Fluid Momentum Wheel" created by AMSAT for one of the P3
birds? (A circular tube of viscous fluid containing magnetic particles that
was forced to flow through the tube by pulsing currents through coils wound
around the tube. -- Completely solid state. No moving parts.)
73 de John, KD2BD
------------------------------
Message: 5
Date: Tue, 07 Feb 2017 13:32:48 -0500
From: keith mcdonnell <kg2ix@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Wx sats
Message-ID: <D2795D87-FC8C-4FF5-9E6A-DCB2BBCB1681@xxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
The new GOES satellite, which is now being commissioned, will have high
definition WEFAX readout once its operational. All that will be needed is a
small dish, LNA, and a soundcard with software. Check the noaa/goes website
for further info.
------------------------------
Message: 6
Date: Tue, 07 Feb 2017 16:58:15 -0900
From: Edward R Cole <kl7uw@xxxxxxxxx.xxx>
To: Dave Mann <cwo4mann@xxxxxxx.xxx>
Cc: AMSAT-BB@xxxxx.xxx
Subject: Re: [amsat-bb] Helical Antenna for 2-meters
Message-ID: <201702080158.v181wGFB014988@xxxxxxxxx.xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Dave,
It helps to be multi-lingual <smile>. Sounds as you got it under control.
I used a 16 element CC cross-yagi for AO-10 and the phasing harness
was not according the dimensions one would calculate but it
worked. I traded it for a M2 436CP42UG for AO-40 (which I still
have) and the CC 20 element 2m satellite antenna. 2m went kaput
early so I used the 432 yagi a lot for uplink in mode-US or LS. I
had a 50w linear which was overkill (usually ran about 20w). The
dish photo I shared was my mode-S downlink using preamp to two Drake
converters.
M2 is marketing an 8 element cross yagi CP antenna for 2m which is
probably just right in gain. Its pretty spendy, though. If you have
a couple 3 or 4 element yagi's you can combine them for CP and even
switchable in sense using a relay or two.
I am using a 2M7 by M2 linear yagi and only have 26 elements of the
big M2 436 antenna mounted. Not QRV yet as I am planning major
changes next summer.
GL on whatever you decide.
73, Ed
At 03:45 PM 2/7/2017, Dave Mann wrote:
>I just finished assembly of the Cushcraft cross-polarized yagi which
>I bought from a fellow Ham. It was like new. Now I remember what I
>really didn't like like about that Antenna. I put one together back
>in 1978 or thereabouts. Putting the phasing harnesses on was quite
>the job! I managed to remember curses in four or five different
>languages (tnx Army language school). Anyway it's all together and
>I mounted it vertically on a 10 piece of pvc pipe for testing. SWR
>was almost 1:1 over the range 432.5 to 437.0 then rose slightly as I
>approached 437 MHz. I'm a happy guy now. Next project is either
>the 2-m Helical we've discussed here, or two 3-element yagis with
>circular polarization. I already have the yagis, so that would be a
>no cost option.
>
>Thoughts anyone?
>
>73
>Dave N4CVX
>
>
>Sent from my iPad
>
> > On Feb 7, 2017, at 18:23, Edward R Cole <kl7uw@xxxxxxxxx.xxx> wrote:
> >
> > Just scale the dimensions proportionally (except wire diameter);
> >
> > ratio = 144/435
> >
> > I built a 14 turn 437 MHz helical back in 1996 to receive the MGS
> beacon and built a 2.4 GHz 6-turn helical for 33-inch offset dish
> feed for AO-40. Plenty information in Amsat Archives. Original
> Kraus-W8JK design is optimistic in gain calculation.
> > http://www.kl7uw.com/Satellite%20feed.jpg
> >
> > W9EK had good construction hints in prior publications.
> >
> > For receive-only do not sweat getting a good SWR. I used a 1/4
> wavelength long 1/8 inch wide brass strip, run from connector to
> beginning turn of the helix for impedance matching. Space the
> point of connection to the helix about 3/16 inch above the ground
> plane reflector. Natural impedance of a helix is 140-ohm.
> >
> > On air experience with the 432 helix was that a ten element CP
> crossed element yagi is better. But if you desire CP the helix is
> a natural, though not perfect.
> >
> > 73, Ed - KL7UW
> > http://www.kl7uw.com
> > Dubus-NA Business mail:
> > dubususa@xxxxx.xxx
> > _______________________________________________
> > Sent via AMSAT-BB@xxxxx.xxx. 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: http://www.amsat.org/mailman/listinfo/amsat-bb
73, Ed - KL7UW
http://www.kl7uw.com
Dubus-NA Business mail:
dubususa@xxxxx.xxx
------------------------------
Message: 7
Date: Tue, 7 Feb 2017 21:53:40 -0500
From: <n4csitwo@xxxxxxxxx.xxx>
To: <ariss-press@xxxxx.xxx>, "amsat-edu" <amsat-edu@xxxxx.xxx>,
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Upcoming ARISS contact with Space Exploration
Educators Conference, Houston, Texas
Message-ID: <7C20EB58174B43B0AFF023C28D6E1C9B@xxx>
Content-Type: text/plain; charset="iso-8859-1"
An International Space Station school contact has been planned with
participants at Space Exploration Educators Conference, Houston, Texas
on 09 Feb. The event is scheduled to begin at approximately 20:30 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 NA1SS and K6DUE. The contact should
be audible over the east coast of the U.S. Interested parties are invited to
listen in on the 145.80 MHz downlink. The contact is expected to be
conducted in English.
The Manned Space Flight Education Foundation Inc. is a 501(c)(3) nonprofit
educational foundation offering extensive science education program and a
space museum. It is the Official Visitor Center of NASA Johnson Space Center
and the only Smithsonian Affiliate in the greater Houston area. Educational
emphasis is placed on science, technology, engineering and mathematics
(STEM) in a fun and engaging way. It uses space exploration to inspire
wonder and interest in science and math.
Space Center Houston offers a rich array of education programming for
teachers and students, providing extraordinary learning opportunities.
Inspiring young people to choose careers in STEM is one of the outcomes of
our program.
Education programs are based on data-supported evidence of effective
learning and teaching methods.
This specific contact will be taking place during the Space Exploration
Educator Conference, which engages teachers from around the world for three
days of hands-on learning and exceptional keynote speakers. Students from
the Science Magnet Program at the Seabrook Intermediate School in Seabrook,
Texas will be participating in the Amateur Radio on the International Space
Station (ARISS) contact.
Seabrook Intermediate School is the leader in innovative education. Their
mission is to ensure that each individual explores and discovers unique
talents, passions, and abilities through a dynamic system distinguished by
limitless opportunities (including the Science Magnet Program) that foster
collaboration, creativity, intrinsic motivation, respect for diversity, and
citizenship to develop a productive role in society.
The Science Magnet Program at Seabrook Intermediate School is offered to
students in grades 6-8. The school provides a unique science curriculum for
all students while providing additional science electives and opportunities
for students enrolled in the Science Magnet Program.
Participants will ask as many of the following questions as time allows:
1. How do you keep your fine motor skills in tune aboard the space station so
you can conduct your experiments?
2. Do the procedures to conduct experiments in space differ from procedures
on earth due to zero gravity?
3. How many sunrises and sunsets do you see in 24 hours and does this affect
your sleep?
4. What kinds of workouts or exercise do astronauts do on the space station?
5. How do you handle a reduction in supplies on board the space station?
6. Do you have a time zone in space?
7. What things do you find most difficult about living in space?
8. What is the number one thing you miss most about earth?
9. Since you lose bone density in space, is this change sudden or a timely
process?
10. Since hair root cells actively divide in a hair follicle, does zero
gravity affect this process? In other words, has your hair growth or
color changed or been affected while living in space?
11. What is the most essential part/piece of the space station?
12. Do you sweat when you exercise in space?
13. How did the American astronauts successfully vote in the presidential
election while aboard the space station?
14. Are astronauts more prone to getting illnesses or diseases in space?
15. Do you have to train your mind into thinking of when it is day and when
it is night?
16. Does your body become more coordinated while on the space station?
17. Do you ever look out and contemplate in wonder what else is out there and
if you might discover it for a future generation?
18. How do you deal with space particles hitting the solar panels and
possibly damaging them?
19. What do you do with the trash you generate on the space station?
20. Do you ever get bored on the space station or is there always something
to do?
21. Do you feel there are many psychological effects of living in space that
need to be documented?
22. Is feeling tired in space different than feeling tired on earth?
23. What do you feel is the most important accomplishment performed by the
space station that will help science?
24. Do the astronauts have to study and learn the languages of the other
astronauts in order to communicate?
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 @xxxxxxxxxxxx
Next planned event(s):
1. Palmetto Scholars Academy, North Charleston, SC, direct via K4PSA
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Shane Kimbrough KE5HOD
Contact is a go for: Fri 2017-02-10 17:59 UTC
2. Coll?ge Andr? Malraux, Chatelaillon-Plage, France, direct via F4KJT
The ISS callsign is presently scheduled to be FX?ISS
The scheduled astronaut is Thomas Pesquet KG5FYG
Contact is a go for: Mon 2017-02-13 14:00 UTC
3. 3rd Junior High School, Komotini, Greece, direct via SV7APQ
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Shane Kimbrough KE5HOD
Contact is a go for: Fri 2017-02-17 08:58 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 Center for the Advancement of Science in
Space (CASIS) 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 informal education venues. With the help of experienced
amateur radio volunteers, ISS crews speak directly with large audiences in a
variety of public forums. Before and during these radio contacts, students,
teachers, parents, and communities learn about space, space technologies,
and amateur radio. For more
information, see www.ariss.org, www.amsat.org, and www.arrl.org.
Thank you & 73,
David - AA4KN
---
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------------------------------
Message: 8
Date: Tue, 7 Feb 2017 22:25:19 -0500
From: <n4csitwo@xxxxxxxxx.xxx>
To: <ariss-press@xxxxx.xxx>, "amsat-edu" <amsat-edu@xxxxx.xxx>,
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Upcoming ARISS contact with Palmetto Scholars
Academy, North Charleston, SC
Message-ID: <889024F5889B4A968376DC4842C7A376@xxx>
Content-Type: text/plain; charset="iso-8859-1"
An International Space Station school contact has been planned with
participants at Palmetto Scholars Academy, North Charleston, SC on 10 Feb.
The event is scheduled to begin at approximately 17:59 UTC. The duration of
the contact is approximately 9 minutes and 30 seconds. The contact will be
direct between NA1SS and K4PSA The contact should be audible over the east
coast of the U.S. 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.
Palmetto Scholars Academy is a public charter school, providing a gifted
curriculum to students in grades 6-12 in North Charleston, South Carolina. 6
years ago PSA opened in a converted day care center and was the lowest
funded school in America. It was started by a group of concerned parents who
wanted to meet the needs of gifted students. In those early days, board
members took out second mortgages to meet teacher payroll, and parents
pulled together daily to send in supplies. Despite challenges, PSA rose
above the decrepitude and started its tradition of achievement, earning
their mascot name of Phoenix.
PSA is a student haven for gifted students. "It's okay to be a nerd here"
and "It's cool to be smart" illuminate the student culture at PSA.
To meet the intellectual needs of gifted students, PSA participates in many
challenges such as VEX Robotics, VEX IQ Robotics, FIRST Robotics
Competition, Ham Radio, Low country Science Fair, Odyssey of the Mind, and
the Student Spaceflight Experiments Program (SSEP). PSA students have
designed three experiments through the SSEP. Two experiments reached the ISS
and returned to Earth, although the second experiment blew up on the Orb-3
and Falcon 9. The third experiment launches next month. Students also send
experiments via PongSats, Cubes in Space, and student-launched high-
altitude balloons.
PSA has a Ham Radio Club and their own vanity call sign, K4PSA. The club
meets every other Friday for 1 ? hours and after schools on Friday. Since
its inception in 2015, the club has gotten 6 students licensed for ham radio.
These students will be the student liaisons and leaders for this ham radio
contact.
PSA has established itself as a distinguished charter school in South
Carolina. With a new building, better funding, and culture of achievement,
PSA rises from the ashes like the Phoenix and challenges its students to
reach the stars.
Participants will ask as many of the following questions as time allows:
1. What is the first thing that you do after you receive the SSEP
experiments?
2. Besides Earth, what interesting objects have you seen from the view on the
ISS?
3. Are there plans to send a 3D printer to the ISS in order to print food?
4. Do you have to wear a uniform, or can you wear anything you want in your
free time?
5. Do you play pranks on each on the ISS?
6. How are you affected by relativity at the current speed you are going, and
do you have some sort of atomic clock on board to measure the effect?
7. Is there one person that is trained to fix the spacecraft, or is everyone
able to fix it?
8. We sent watermelon seeds in microgravity on a sounding rocket out of
Wallops Island. Do you think watermelons would be a good fruit to
cultivate on the ISS?
9. Does microgravity affect your ability to talk?
10. Are there laws in space that don't apply on Earth?
11. Do you think re-usability will become a standard for all rockets launched
by the United States soon in the future?
12. In your opinion, what is the greatest recent innovation in spaceflight?
13. What games, if any, do you play on the ISS that can only be played in
microgravity?
14. How do you feel about civilian space travel, if it ever happens?
15. Can astronauts observe religious services aboard the ISS?
16. Are there any modifications to your 3d printer to allow it to print in
space?
17. What do you plan to do once you are finished being an astronaut?
18. If you could choose any animal to accompany you to space, without it
affecting them, or harming anyone, what animal would you choose?
19. What is the most interesting item that you have printed with your 3D
printer?
20. Have your opinions changed after seeing the world from a perspective no
one else has seen?
21. If you were able to test your own experiment aboard the ISS, what would
it be and why?
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 @xxxxxxxxxxxx
Next planned event(s):
1. Coll?ge Andr? Malraux, Chatelaillon-Plage, France, direct via F4KJT
The ISS callsign is presently scheduled to be FX?ISS
The scheduled astronaut is Thomas Pesquet KG5FYG
Contact is a go for: Mon 2017-02-13 14:00 UTC
2. 3rd Junior High School, Komotini, Greece, direct via SV7APQ
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Shane Kimbrough KE5HOD
Contact is a go for: Fri 2017-02-17 08:58 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 Center for the Advancement of Science in
Space (CASIS) 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 informal education venues. With the help of experienced
amateur radio volunteers, ISS crews speak directly with large audiences in a
variety of public forums. Before and during these radio contacts, students,
teachers, parents, and communities learn about space, space technologies,
and amateur radio. For more
information, see www.ariss.org, www.amsat.org, and www.arrl.org.
Thank you & 73,
David - AA4KN
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Message: 9
Date: Tue, 7 Feb 2017 22:26:37 -0500
From: Mvivona <Mvivona@xxxxx.xxx>
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] ISS uplink for broadcast TV
Message-ID: <9232D5BB-CFD7-4FEF-9F64-D00D0EDBD1D1@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Talked to the crew onboard the ISS today, but not the usual Amateur radio
way. I am a broadcast TV engineer and we had a group from the local high
school come to our studios where we linked them up with the ISS crew. Not on
the expected 2 meter145 frequencies, but up on 14Ghz and down on 12Ghz, Ku
band. The link actually went via NASA's Houston comm center and not
directly to the ISS. Our uplink dish is 12 meters in diameter and capable of
an ERP of about 3.5 million watts. It's been a while since I did an uplink
as almost everything coming in and going out of our station is Fiber based
these days. Even our Live trucks are moving away from microwaving their
video back to the studio in leu of a neat little box called the "Back Pack".
It's basically a box with 6 cellular connections all bonded together to
allow very high bandwidth. The Photog straps it on his back and plugs his
camera directly into it. No more need of an expensive microwave truck. There
are also some other pr
etty cool technologies coming down the pike that I can't event talk about.
The future of communications will be changing whether it be watching TV or
talking on your iCom Amateur radio to the LEO satellites.
Can't wait to see what the future holds.
Michael KC4ZVA
------------------------------
Message: 10
Date: Wed, 8 Feb 2017 07:31:25 -0500
From: jeffory broughton <jefforybroughton@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] FLUCTUATIONS ON ROTORS WHILE TRANSMITTING
Message-ID:
<CACm2je3rz-Eftisz8vuyuJwDDV=reyp5fweF8aY9t=ZtoCzX2w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I have been fighting this problem for several months. While I transmitting
on ssb, the azmuth and elevation rotors would fluctuate several degrees.I
had convinced myself it was an RFI issue.I tried bypass caps,clamp on
ferrite chokes without success.I finally ran a ground wire between every
piece of eqpt
In the shack and it was 100% gone.It was not RF at all,it was a ground loop
issue.
Jeff , WB8RJY.
jeff broughton
------------------------------
Message: 11
Date: Wed, 8 Feb 2017 14:32:36 -0000
From: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Nayif-1 launch announcement
Message-ID: <B53E4A3DB78C4D5E9A0B06611967F74F@xxxxxxx.xxxxx>
Content-Type: text/plain; charset="utf-8"
AMSAT-UK and AMSAT-NL are delighted to now be able to confirm that the
Nayif-1 1U CubeSat, which has a full FUNcube payload, is now scheduled for
launch on an Indian PSLV launch vehicle at 03:58 UTC on February 15th 2017.
The flight, C-37, will be carry a total of 104 satellites into orbit.
Nayif-1 has been developed by the Mohammed bin Rashid Space Centre (MBRSC)
and American University of Sharjah (AUS). The UAE's first Nanosatellite was
developed by Emirati engineering students from AUS under the supervision of
a team of engineers and specialists from MBRSC within the framework of a
partnership between the two entities, aiming to provide hands-on experience
to engineering students on satellite manufacturing.
The spacecraft includes a U/V linear transponder and telemetry transmitter.
It employs enhanced oscillator circuitry and includes an active attitude
determination and control system.
As with previous missions carrying FUNcube payloads, AMSAT-UK would very
much like to receive as many reports from stations around the world,
especially during the first few minutes and hours after launch. We expect
that the first signals may be heard in North America during the mid evening
hours (local time) on Feb14th
There is a mission specific Telemetry Dashboard for this project and this
can be downloaded from
http://download.funcube.org.uk/Nayif-1_Dashboard_1038_installer.msi and, in
a similar way to the FUNcube-1 Dashboard, this will be capable of uploading
the telemetry received to a central Data Warehouse.
Guidance Notes for the installation of the Dashboard, integration with a
FUNcube Dongle and the Data Warehouse have been prepared for the Nayif-1
mission. These can be downloaded from Nayif-1 Dashboard Notes ver 1.0b.pdf
A file to test that the Dashboard and Warehouse configuration are working
correctly can be downloaded from
http://download.funcube.org.uk/nayif1_testfile.funcubebin
The operating frequencies for the spacecraft will be:
Telemetry
145.940MHz using 1k2 BPSK to the FUNcube standard.
Transponder
Uplink on 435.045 ? 435.015MHz
Downlink on 145.960-145.990MHz
Initial operations of the spacecraft will be in a low power "safe" mode
where only the telemetry transmitter is activated.
More details about the launch, exact deployment time and pre-launch TLE's
will be made available as soon as they become available; in the meantime we
will really appreciate your support!
73
Graham
G3VZV
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
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 member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 12, Issue 29
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