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CX2SA > SATDIG 01.05.20 16:19l 545 Lines 18962 Bytes #999 (0) @ WW
BID : AMSATBB15133
Read: GUEST
Subj: AMSAT-BB-digest V15 133
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Sent: 200430/1349Z @:CX2SA.SAL.URY.SOAM #:30223 [Salto] FBB7.00e $:AMSATBB15133
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: AO-92 High Speed Data decode questions (Loren M. Lang)
2. Re: AO-92 camera mode more info plse (Leffke, Zachary)
3. Re: AO-92 camera mode more info plse (Andrew Glasbrenner)
4. Re: AO-92 High Speed Data decode questions (Andrew Glasbrenner)
5. amsat-bb reader? (Douglas Tabor)
6. Re: AO-92 High Speed Data decode questions (Jerry Buxton)
7. Re: AO-92 High Speed Data decode questions (Ben Cook)
8. DOSAAF-85 transponder activation (Blinov Igor)
9. Re: D-Star One Sparrow (Don KB2YSI)
10. Re: DOSAAF-85 transponder activation (Nico Janssen)
11. Re: D-Star One Sparrow (Peter Goodhall (2M0SQL))
12. D-Star One Sparrow (Roy Dean)
----------------------------------------------------------------------
Message: 1
Date: Wed, 29 Apr 2020 06:53:56 -0700
From: "Loren M. Lang" <penguin359@?????.???>
To: Glenn Miller - AA5PK <aa5pk@??????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] AO-92 High Speed Data decode questions
Message-ID:
<CACymvmeW40RsVnNaxFhht-VowTZUnCcf3_6YaPfhiW=vehSdEQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Ok, that makes sense. So the repeated signal I heard was simply repeated
attempts at getting the command through and were being interfered with by
the existing FM transmissions. All of the frames I collected would have
actually been DUV and not the same as the sounds I heard. Did camera mode
ever get activated during that third pass?
On Wed, Apr 29, 2020, 02:31 Glenn Miller - AA5PK <aa5pk@??????????.???>
wrote:
> What you heard was the command station attempting to send the command to
> AO-92 to activate the camera.
>
> Unfortunately, there were several stations trying to use the repeater at
> the time and blocking the commands being sent to
> AO-92.
>
> When the camera is active, the repeater is not available.
>
> Glenn
> AA5PK
>
> -----Original Message-----
> From: Loren M. Lang via AMSAT-BB
> Sent: Wednesday, April 29, 2020 1:13 AM
> To: AMSAT BB
> Subject: [amsat-bb] AO-92 High Speed Data decode questions
>
> I tried capturing some of the high-speed data from AO-92 today from the
> final 1750Z pass today when the camera was activated. I believe I had some
> success, but I am a little confused about what I captured. I did it in two
> stages using my phone to capture the raw IQ from my SDR during the pass and
> then playing it back on my computer right after into Foxtelem 108z5. The
> pass was only 16 degrees at it's peak, but I was able to hear the satellite
> down to as little as 6 degrees and Foxtelem reported 24 frames successfully
> decoded.
>
>
------------------------------
Message: 2
Date: Wed, 29 Apr 2020 14:18:37 +0000
From: "Leffke, Zachary" <zleffke@??.???>
To: "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] AO-92 camera mode more info plse
Message-ID:
<MN2PR05MB7037F081F130BFC4F397AFD0DFAD0@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="us-ascii"
Hi Rob,
When in camera mode the VT camera follows the following basic sequence:
Snap a picture, check how much 'earth' is in the frame, if it meets the
'earth detection' threshold, compress it with JPEG algorithms, break up the
result into smaller data frames (8 pixel lines) and send the frame to the
flight computer. If the 'earth detection' threshold is not met, the image
is discarded and another one is taken, check if there is earth, rinse
repeat. There is no long term storage of any given image and the earth
detection step is part of the NOAA license. If an image is received by a
station, it's a shot from roughly 'overhead', and the AMSAT page has a nifty
feature that shows the subsatellite point based off timestamp information
from each image downloaded.
I believe there is a 45 minute timer (roughly half of one orbit, the command
folks can double check my number there) for the general 'camera mode' of the
spacecraft (which is both 'high speed mode' and 'camera on'), with the
command stations that start that process in NA. After the timeout the
spacecraft goes back into transponder mode (or safe mode, again command
stations can correct me there). So it might be tricky to pick up in New
Zealand. I know early on in the life of AO-92 there were some experiments
to trigger camera mode right as the spacecraft set over the horizon (I
believe on ascending passes) by command stations at higher latitudes so that
the camera would be active and received by Japanese hams. A similar
experiment might work for descending passes and southerly command stations,
but it would be smart to look at the footprint/ground track to see which
pass might put New Zealand in the footprint within the timer window.
-Zach, KJ4QLP
--
Research Associate
Aerospace & Ocean Systems Lab
Ted & Karyn Hume Center for National Security & Technology
Virginia Polytechnic Institute & State University
Work Phone: 540-231-4174
Cell Phone: 540-808-6305
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Rob Ramsey via
AMSAT-BB
Sent: Wednesday, April 29, 2020 12:39 AM
To: amsat-bb@?????.???
Subject: [amsat-bb] AO-92 camera mode more info plse
A little more info please on the camera mode of AO-92 , Is this just a real
time transmission as the satellite is overhead or close by? is it stored and
sent continuously for a predetermined time? I had my station on remote all
day got nothing here in New Zealand ZL3TCM
_______________________________________________
Sent via AMSAT-BB@?????.???. 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
------------------------------
Message: 3
Date: Wed, 29 Apr 2020 10:25:49 -0400
From: "Andrew Glasbrenner" <glasbrenner@??????????.???>
To: "'Rob Ramsey'" <ramsey4@????.??.??>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] AO-92 camera mode more info plse
Message-ID: <042501d61e32$14c744d0$3e55ce70$@??????????.???>
Content-Type: text/plain; charset="us-ascii"
Sorry, the images are real time and the camera is on a 45 minute timer to
satisfy one of our original NOAA imaging license requirements. We did get
some partial pics from Chile yesterday, but VK/ZL is likely too far for it
to remain on long enough to hear.
73, Drew KO4MA
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Rob Ramsey via
AMSAT-BB
Sent: Wednesday, April 29, 2020 12:39 AM
To: amsat-bb@?????.???
Subject: [amsat-bb] AO-92 camera mode more info plse
A little more info please on the camera mode of AO-92 , Is this just a real
time transmission as the satellite is overhead or close by? is it stored and
sent continuously for a predetermined time? I had my station on remote all
day got nothing here in New Zealand ZL3TCM
_______________________________________________
Sent via AMSAT-BB@?????.???. 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
------------------------------
Message: 4
Date: Wed, 29 Apr 2020 10:27:48 -0400
From: "Andrew Glasbrenner" <glasbrenner@??????????.???>
To: "'Loren M. Lang'" <penguin359@?????.???>, <amsat-bb@?????.???>
Subject: Re: [amsat-bb] AO-92 High Speed Data decode questions
Message-ID: <042601d61e32$5b915ea0$12b41be0$@??????????.???>
Content-Type: text/plain; charset="us-ascii"
No, it didn't get activated the third pass.
73, Drew KO4MA
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Loren M. Lang via
AMSAT-BB
Sent: Wednesday, April 29, 2020 9:54 AM
To: Glenn Miller - AA5PK <aa5pk@??????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] AO-92 High Speed Data decode questions
Ok, that makes sense. So the repeated signal I heard was simply repeated
attempts at getting the command through and were being interfered with by
the existing FM transmissions. All of the frames I collected would have
actually been DUV and not the same as the sounds I heard. Did camera mode
ever get activated during that third pass?
------------------------------
Message: 5
Date: Wed, 29 Apr 2020 08:33:23 -0600
From: Douglas Tabor <dtabor52@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] amsat-bb reader?
Message-ID: <4932CC24-506A-4295-880A-734436FDA649@?????.???>
Content-Type: text/plain; charset=utf-8
Does anyone know of an -bb ?reader? application that can be used with
amsat-bb?
Back in the usenet days, there were reader clients that could parse entries
to make them more human readable. Don?t really care if it?s Linux or MacOS
based.
I browsed the amsat.org ?mailing lists and services? area and didn?t see any
mention -or- is this another one of those things that are well known to
those that know them well?
Many thanks.
N6UA, Douglas Tabor
dtabor52@?????.???
------------------------------
Message: 6
Date: Wed, 29 Apr 2020 10:56:25 -0500
From: Jerry Buxton <n0jy@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] AO-92 High Speed Data decode questions
Message-ID: <4124a772-5c91-e2a0-2290-4c9f1c5d37e4@?????.???>
Content-Type: text/plain; charset=utf-8
Loren,
It is true that the DUV telemetry would continue uninterrupted, as long
as AO-92 was still in Transponder Mode.? As Drew confirmed the sat never
made it to Data Mode (the mode that enables the camera and high speed
data downlink) and if it had, the same DUV telemetry frames also come
down in the high speed data so you would continue to see them on FoxTelem.
Jerry Buxton, N?JY
On 4/29/2020 08:53, Loren M. Lang via AMSAT-BB wrote:
> All of the frames I collected would have
> actually been DUV and not the same as the sounds I heard. Did camera mode
> ever get activated during that third pass?
------------------------------
Message: 7
Date: Wed, 29 Apr 2020 19:58:04 -0500
From: "Ben Cook" <n6elf@????????.??>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] AO-92 High Speed Data decode questions
Message-ID: <21464113-FE29-4A5C-9C69-6FD27FD1445C@????????.??>
Content-Type: text/plain; charset="UTF-8"; format=flowed
As someone new to satellite operations, I?m finding out that it?s
extremely helpful to not only check the AMSAT status page before an
upcoming pass, but also check reports from AMSAT and others on twitter.
That helps to cut down on the confusion around schedule or mode changes.
For example, helps to know that AO-92 was put into L mode an hour before
the next pass you?re planning to work. Just thoughts to myself this
first week or so on the air.
73,
Ben - N6ELF
------------------------------
Message: 8
Date: Thu, 30 Apr 2020 11:08:25 +0300
From: Blinov Igor <rw3xl@??????.??>
To: AMSAT-BB <amsat-bb@?????.???>
Subject: [amsat-bb] DOSAAF-85 transponder activation
Message-ID: <468221588233298@????.??????.??>
Content-Type: text/plain; charset=utf-8
Good day!
Satellite DOSAAF-85 turn on transponder (linear, inverting) on for testing
purposes.
UPLink 145965KHz +/-30 KHz
DOWNLink 435640KHz +/-30 KHz
BEACON 435605KHz
TLE:
1 44909U 19096E 20120.96346743 +.00000010 +00000-0 +00000-0 0 9999
2 44909 082.5239 027.5343 0217449 340.2089 019.0669 12.79706663015985
Try it!
--?
73! Igor, RW3XL
------------------------------
Message: 9
Date: Thu, 30 Apr 2020 07:28:12 -0400
From: Don KB2YSI <kb2ysi@?????.???>
To: kd4iz@?????.???
Cc: AMSAT-BB@?????.???
Subject: Re: [amsat-bb] D-Star One Sparrow
Message-ID:
<CAAJiE8Poeb5wwUSsNBDELs6TQDsfWbx8yvc2Hqonu1eX5KLkRA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
The last I heard was that it was being launched and then no further
information was released afterwards. I take that as the bird is
non-operational.
On Sun, Apr 26, 2020, 18:07 Jack Spitznagel via AMSAT-BB <amsat-bb@?????.???>
wrote:
> Out of curiosity - what is the status of this bird? It shows up in the NASA
> orbital info, but not in the Amateur in the SatPC32 tracking selections.
>
> The German Orbital Systems site does not elaborate on some of the details.
> particularly if one wished to configure a D-Star rig and try it. With
> IC-9700's proliferating I would expect some noise if it is accessible.
>
>
>
> Any info or help would be appreciated.
>
>
>
> Jack Spitznagel - KD4IZ
>
> Trustee for NR3DT
>
> The Museum Ship USCGC Taney WHEC-37 Amateur Radio Group
>
>
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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
>
------------------------------
Message: 10
Date: Thu, 30 Apr 2020 14:06:01 +0200
From: Nico Janssen <hamsat@??????.??>
To: Blinov Igor <rw3xl@??????.??>, AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] DOSAAF-85 transponder activation
Message-ID: <d66462f9-424b-1252-0043-aa12023aabad@??????.??>
Content-Type: text/plain; charset=utf-8; format=flowed
The new amateur payload DOSAAF 85 appears to work very well.
Doppler measurements confirm that it is indeed object 44909,
2019-096E. The satellite identifies itself as "RS44" (i.e. Radio
Sputnik 44) on its CW beacon on 435.6043 kHz. The passband is
about 63 kHz wide. It may also have a downlink between 2400 and
2485 MHz. The frequencies of RS44/DOSAAF 85 have not been IARU
coordinated. The satellite is in an elliptical orbit with a perigee of
1175 km, an apogee of 1511 km and an inclination of 82.5 degrees.
The payload is apparently attached to the Breeze-KM upper stage of
a Rokot launch vehicle that launched three Gonets satellites on
December 26, 2019. It was originally expected to launch in 2015.
It is based on the Yubileiniy platform.
For details, see https://space.skyrocket.de/doc_sdat/dosaaf-85.htm
<https://t.co/CCuN4HN8KI?amp=1>and
http://spaceflight101.com/rockot-blasts-off-from-plesetsk-with-military-satell
ite-payloads/
73,
Nico PA0DLO
On 30-04-2020 10:08, Blinov Igor via AMSAT-BB wrote:
> Good day!
> Satellite DOSAAF-85 turn on transponder (linear, inverting) on for testing
purposes.
> UPLink 145965KHz +/-30 KHz
> DOWNLink 435640KHz +/-30 KHz
> BEACON 435605KHz
> TLE:
> 1 44909U 19096E 20120.96346743 +.00000010 +00000-0 +00000-0 0 9999
> 2 44909 082.5239 027.5343 0217449 340.2089 019.0669 12.79706663015985
> Try it!
> --
> 73! Igor, RW3XL
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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
------------------------------
Message: 11
Date: Thu, 30 Apr 2020 13:17:24 +0100
From: "Peter Goodhall (2M0SQL)" <peter@????????.??.??>
To: Don KB2YSI <kb2ysi@?????.???>
Cc: Amsat <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] D-Star One Sparrow
Message-ID:
<CAFvUaiqqg0e0=QW_Dxqj-OboxT9Q7cU+qpdWBXWw6Z=hPfueCQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Yeah asked for further details on DSTAR One group of satellites but
the operator doesn't reply to emails and no updates so guessing failed
mission.
Peter, 2M0SQL
On Thu, 30 Apr 2020 at 12:30, Don KB2YSI via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> The last I heard was that it was being launched and then no further
> information was released afterwards. I take that as the bird is
> non-operational.
>
> On Sun, Apr 26, 2020, 18:07 Jack Spitznagel via AMSAT-BB
<amsat-bb@?????.???>
> wrote:
>
> > Out of curiosity - what is the status of this bird? It shows up in the
NASA
> > orbital info, but not in the Amateur in the SatPC32 tracking selections.
> >
> > The German Orbital Systems site does not elaborate on some of the details.
> > particularly if one wished to configure a D-Star rig and try it. With
> > IC-9700's proliferating I would expect some noise if it is accessible.
> >
> >
> >
> > Any info or help would be appreciated.
> >
> >
> >
> > Jack Spitznagel - KD4IZ
> >
> > Trustee for NR3DT
> >
> > The Museum Ship USCGC Taney WHEC-37 Amateur Radio Group
> >
> >
> >
> >
> >
> > _______________________________________________
> > Sent via AMSAT-BB@?????.???. 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
> >
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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
------------------------------
Message: 12
Date: Thu, 30 Apr 2020 09:43:25 -0400
From: Roy Dean <royldean@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] D-Star One Sparrow
Message-ID:
<CADGPg2toHCoB2e0vGi_NGz5uoy0hoBMU3qJY=kA9NLsrmHVOEg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
>
> Yeah asked for further details on DSTAR One group of satellites but
> the operator doesn't reply to emails and no updates so guessing failed
> mission. Peter, 2M0SQL
There was ONE report of a successful D-Star qso not long after
commissioning.
Then the story faded into history......
--Roy
K3RLD
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@?????.???.
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!
https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 15, Issue 133
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