[amsat-bb] Re: MMSSTV and ARRISat-1

[Greg D.]

SSTV pictures on HF are often in Scottie-1 mode, while the ARISSat-1 are in 
Robot-36.  Perhaps you are receiving in the wrong mode?  That's about the only 
thing I can think of that might be mis-matched, if HF works, since with the 
satellite's downlink being in FM mode, you can't be off in audio frequency.  I 
presume you're seeing the audio in the waveform display.

MMSSTV has an automatic mode detect which I have found to work very well.  I 
just click on that, and off it goes.  I think everything is default.  Have you 
tried that?

Good luck,

Greg  KO6TH


> From: inservice2...@hotmail.com
> To: amsat-bb@amsat.org
> Date: Wed, 28 Dec 2011 15:35:39 -0600
> Subject: [amsat-bb] MMSSTV and ARRISat-1
> 
> 
> GA,
> All the talk about SSTV from this bird got me thinking I'd like to try!
> I downloaded MMSSTV and installed. 
> What are the best settings to use in the setup page for decent copy of photos 
> from ARRISAT-1?
> I did copy pix on 14.230 after setup as a test run...but on last pass of 
> ARRISAT, had wonderful copy of voice beacon but no pictures decoded.
> So wonder what I might be doing wrong.
> Any help appreciated.
> Kirk, N0KK
> 
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[amsat-bb] Re: HamSatDroid New Feature Discussion

[Dinesh Cyanam]

Hi Dave,
I have been using HamSatDroid from the time it was released and I simply love 
the app. Thank you for that. 

On the features side, I feel that the satellite list should be sorted. I always 
end up scrolling up and down the list a couple of times to find the right 
satellite. Another feature that I would request is the ability to rotate the 
radar plots. I believe the "Utilize the compass and tilt sensors to show when 
the phone is pointing at the satellite" feature might be something similar to 
what I am asking for. I particularly liked this ability to turn the radar plots 
in the Satellite Tracker iOS app.

Eagerly waiting to see the new features in the app. If you need testers do let 
me know. I am an experienced app tester.

73,
KC2YQJ
Dinesh Cyanam
KC2YQJ at arrl.net


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[amsat-bb] MMSSTV and ARRISat-1

[kp hpjr]

GA,
All the talk about SSTV from this bird got me thinking I'd like to try!
I downloaded MMSSTV and installed. 
What are the best settings to use in the setup page for decent copy of photos 
from ARRISAT-1?
I did copy pix on 14.230 after setup as a test run...but on last pass of 
ARRISAT, had wonderful copy of voice beacon but no pictures decoded.
So wonder what I might be doing wrong.
Any help appreciated.
Kirk, N0KK
  
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[amsat-bb] Re: Arissat-1

[Vu Trong Thu]

Hi all,
ARISSat-1 is working well here, I could hear CW beacon and decoded some BPSK
telemetry frames on a 14 degrees pass this morning.
Will try to track it till the last moment.

73,
Thu XV9AA

-Original Message-
From: PY5LF [mailto:py...@falautomation.com.br] 
Sent: Thursday, December 29, 2011 8:41 PM
To: AMSAT-BB@amsat.org
Subject: [amsat-bb] Arissat-1

Hi

Arissat-1 still working fine . 

Transponder signal very good on a pass of 45 degrees.

http://www.youtube.com/watch?v=Ws9W78_t_C0

73

 

PY5LF

LUCIANO FABRICIO

Curitiba-PR-Brazil GG54jm

  http://www.qrz.com/db/py5lf

 



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[amsat-bb] G5400 azimuth rotor - Can I install G5600 limit switches?

[Mike N8MR]

I just bought a used (originally purchased in 1996) G5400 az/el rotor combo for 
my local radio club. The rotors are in great shape. In fact the az rotor is 
still in its original wrapping! 

Years ago and at another club, I got used to their G5600 rotors, which had 
limit switches in both the elevation and azimuth rotors. These limit switches 
provided great protection from us neophyte sat ops accidentally jamming the 
rotors against their stops. 

>From past postings on AMSAT-BB, I take it the main difference between the 
>G5400 and the G5600 rotors is that the G5400 uses a thermal switch instead of 
>limit switches in the G5400 az rotor. I'm not sure if I can trust the thermal 
>switch setup as much as I did the limit switches. If limit switches are truly 
>a better safeguard against rotor damage, can I simply add G5600 limit switches 
>to the G5400 az rotor? 

I know I'd have to install the motor start cap in the controller. Just 
wondering about the limit switches. 

Thanks,
Mike, N8MR

  
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[amsat-bb] ARRISSat-1 telemetry back to normal

[Ken Swaggart]

At 2244 had a 22 degree pass with strong signals on the HO loop.  The 
highest temperature was the -A PPT6 panel temp at 74 deg C.  RF temp was 58 
C which is less then the 60+ observed yesterday.  Satellite was in high 
power mode the entire pass.


Keps were only a half day old, but I still had to do some tweaking to keep 
the telemetry in the decoder's bandpass.


73,
Ken, W7KKE
CN75xa 



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[amsat-bb] ARISSAT-1

[Carl Rimmer W8KRF]

I was able to copy ARISSat-1 during three passes today but as was 
mentioned in a previous bulletin, the signal seems much weaker, and I 
have had to correct the frequency often which means the keps are not up 
to date although I downloaded them this morning.  I just downloaded them 
again a few minutes ago and noticed a big change.  She was also in Low 
Power mode in full sunlight again.  I did work CW through her and heard 
my signal on the downlink but it was weak and warblely (if that is a 
word).  I am thinking it is tumbling quite a bit.  I am beginning to 
believe that the predictions for de-orbit on the 30th might be accurate.


I must say it has been fun and I hope we have all learned lessons from 
the experience.  I'll keep monitoring until it is confirmed that 
de-orbit has occurred.  I am looking forward to Hamcation in February so 
I can sit and chat (debrief) with all the fine people who put her up there.


73,
--
*Carl W8KRF*
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[amsat-bb] ARRISSat-1 telemetry in "idle"

[Ken Swaggart]

At 2110Z had a 70+ degree pass. ARRISSat appeared to be in low power mode, 
but the doppler correction was aproximately 1 KHz off even with less than 
day old keps. When the telemetry beacon came on it never appeared to come 
out of idle mode and no telemetry was decoded.


73,
Ken, W7KKE
CN75xa



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[amsat-bb] Re: HamSatDroid New Feature Discussion

[Clint Bradford]

Some of the requested features "scare" me on your behalf, Dave (grin).

• Doppler correction information (1)
• Footprints (2)
• Satellite information including frequencies, modes (5)

If invoked, you will need to update the program VERY often ... because if 
there's a mode change on a sat, and your program doesn't show it - well, that's 
the type of "support" email you do not deserve to receive.

Personally, I would make people perform their own research for the satellite 
control operator pages, and get the freq info in that manner. Otherwise - to be 
accurate - you will have to edit your program every mode change of a sat.

I see your program (and the other good ones) as being tools to tell us WHERE 
the sats are. Get that aspect of the process down reliably and painlessly - 
then you are "ahead of the curve" from other lesser programs out there. I truly 
believe it is up to each ham to educate themselves on how to find the best info 
on freq/mode data elsewhere.


Clint Bradford K6LCS

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[amsat-bb] ARISSat Today--low power, I would guess

[Burns Fisher]

Hi,

I had two passes of ARISSat today over New Hampshire.  The first one, I
only caught the tail end and got a Kursk frame or 2, but no satellite
telemetry.  The second one I had nice and strong as soon as it appeared
above the horizon, but it must have been in low power mode.  The
transmission cut off cleanly (no fade).  Then shortly afterwards it came on
again and cut off again.  I should have timed them but did not.  I had 3
periods of reception during the pass.   Unfortunately, none was long enough
to let the telemetry decoder get a frame.

Farrell, were you sending SSTV to the transponder around 1630Z?  It did
look like SSTV on the spectrum diagram but it was not doppler synchronized,
so it was drifting even when I synchronized.  It also disappeared long
before my pass was over, as I would have expected if the source were way
west of me.

Burns, W2BFJ
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[amsat-bb] Re: Arissat-1

[Farrell Winder]

Dear Luciano,
I am pleased to note  your report on the ARISSat-1 Transponder.  Would it be 
possible for you or others to experiment with an SSTV picture through the 
Transponder?  I did manage to get a complete image via the transponder in 
November .  I  note there are  two others who have sent successful images 
and hopefully there might be others while this historical satellite is still 
in orbit!  Thanks for the efforts of those who might try.

73,
Farrell Winder, W8ZCF
Cincinnati, Ohio, USA
--
From: "PY5LF" 
Sent: Thursday, December 29, 2011 8:41 AM
To: 
Subject: [amsat-bb] Arissat-1


Hi

Arissat-1 still working fine .

Transponder signal very good on a pass of 45 degrees.

http://www.youtube.com/watch?v=Ws9W78_t_C0

73



PY5LF

LUCIANO FABRICIO

Curitiba-PR-Brazil GG54jm

 http://www.qrz.com/db/py5lf



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[amsat-bb] HamSatDroid New Feature Discussion

[David Johnson]

Hi,

I've released a set of candidate features that have been proposed for
HamSatDroid:

https://sites.google.com/site/hamsatdroid/news/new-features

If you are currently using the app or know someone that is, please take a
moment to look at the page and give us some feedback.

73

Dave, G4DPZ
AMSAT-UK Committee Member
AMSAT_NA Life Member
FUNcube Software developer
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[amsat-bb] ARISSat-1

[N0JY]

Strong signal on the FM downlink 145.950 here in urban Cali, Colombia, 
S.A. on a nearly overhead pass at 14:55UTC.


73,
Jerry
N0JY

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[amsat-bb] Arrissat-1 UK Status Report.

[GW1FKY]

Hi all,
It may not be significant as I note from Roland that it was OK,however 
over here in Wales ( UK ) the pass
today ( Thursday 29th Dec. at 1345 hrs) it did not sound as healthy on the  
downlink as I normally receive the satellite.
Did hear my downlink much weaker and also heard 2E0SQL also calling  CQ   - 
 Peter also heard you yesterday you were much stronger but  did not get 
back to you as my antenna was doing a 180 degree turn.
Will monitor the next pass and try to get an update on the status.
Ken Eaton
GW1FKY
 
By the way, I note thankfully that all went well for the commercial launch  
of the Soyuz ( Fregat )and its payload on Wednesday 28th   December.
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[amsat-bb] FUNcube at Science Education Conference

[Trevor .]

AMSAT-UK will be explaining the potential of the FUNcube satellite as a 
teaching tool at the Association of Science Education (ASE) Conference Jan 5-7, 
2012. 

The ASE exists to provide support and ideas for school science teachers in the 
UK. AMSAT-UK will be having a small stand in the marquee (number AS28). 

The event takes place at the University of Liverpool. Admission to the 
exhibition is free, but to avoid any queuing, you may wish to preregister on 
the ASE website.

Association of Science Education (ASE) http://ase.org.uk/ 

FUNcube satellite http://www.FUNcube.org.uk/ 

AMSAT-UK: http://www.uk.amsat.org/

73 Trevor M5AKA

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[amsat-bb] Re: ARISSat : only a few more days !

[Nico Janssen]

Some additional information can be found here:
http://i88.photobucket.com/albums/k166/suzymchale/iss-ref/issref2010prop.jpg

So engines on the Service Module of the ISS can be used
but usually Progress, ATV and HTV engines are used for
reboosts.

73,
Nico PA0DLO


On 2011-12-29 00:45, Mark Lunday wrote:

Periodic reboosts are thus necessary every few months, usually undertaken by
a Progress cargo ship docked to the Russian segment, or an Orbiter when
docked to Destiny.


http://suzymchale.com/ruspace/issorbit.html


-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Wayne Estes
Sent: Wednesday, December 28, 2011 4:16 PM
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: ARISSat : only a few more days !

Out of curiosity, what method is used to keep the International Space
Station from burning up?

I know that periodic boosts are done to raise the orbit.  Is that done
with rocket engines built into the space station?  If so, it seems that
storage and eventual reloading of the fuel would be difficult and high-risk.

Or is the ISS boosted using the engines of a docked vehicle?  That seems
like it would have its own set of complications.

Wayne Estes W9AE
Oakland, Oregon, USA, CN83ik
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[amsat-bb] Arissat-1

[PY5LF]

Hi

Arissat-1 still working fine . 

Transponder signal very good on a pass of 45 degrees.

http://www.youtube.com/watch?v=Ws9W78_t_C0

73

 

PY5LF

LUCIANO FABRICIO

Curitiba-PR-Brazil GG54jm

  http://www.qrz.com/db/py5lf

 

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