| |
CX2SA > SATDIG 02.03.20 00:24l 566 Lines 19677 Bytes #999 (0) @ WW
BID : AMSATBB1529
Read: GUEST
Subj: AMSAT-BB-digest V15 29
Path: IW8PGT<LU4ECL<HR1PAQ<CX2SA
Sent: 200203/0147Z @:CX2SA.SAL.URY.SOAM #:24247 [Salto] FBB7.00e $:AMSATBB1529
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: New Candidate Objects for HuskySat-1 (Joseph B. Fitzgerald)
2. HuskySat 1 identified (Nico Janssen)
3. Re: HuskySat 1 identified (Pedro Converso)
4. LU7AA Buoy sailing (Amsat Argentina)
5. Re: HuskySat 1 identified (Joseph B. Fitzgerald)
6. Building FoxTelem (follow up from Error accessing FunCube
Pro...) (Joseph Armbruster)
7. Re: Tuning HuskySat-1 telemetry signal (Roy Dean)
8. Re: Tuning HuskySat-1 telemetry signal (Mark L. Hammond)
9. Re: Tuning HuskySat-1 telemetry signal (JoAnne K9JKM)
10. Re: Tuning HuskySat-1 telemetry signal (Burns Fisher)
11. [Video] HuskySat-1 decoded with manual tuning and no SDR
(John Brier)
12. Re: [Video] HuskySat-1 decoded with manual tuning and no SDR
(Zach Metzinger)
----------------------------------------------------------------------
Message: 1
Date: Sun, 2 Feb 2020 14:16:47 +0000
From: "Joseph B. Fitzgerald" <jfitzgerald@????.???.???>
To: Alan via AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] New Candidate Objects for HuskySat-1
Message-ID:
<BN6PR22MB069068DFC81E14D44254DEAF87010@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="iso-8859-1"
The new objects have been added to nasabare.txt
de KM1P
------------------------------
Message: 2
Date: Sun, 2 Feb 2020 15:35:34 +0100
From: Nico Janssen <hamsat@??????.??>
To: AMSAT <AMSAT-BB@?????.???>
Subject: [amsat-bb] HuskySat 1 identified
Message-ID: <ef8fc9a2-6958-e56d-d4cb-438f54ec10af@??????.??>
Content-Type: text/plain; charset=utf-8; format=flowed
Doppler measurements show that HuskySat 1 is
object 45117 (2019-071G).
Downlink frequency: 435.79973 MHz.
73,
Nico PA0DLO
------------------------------
Message: 3
Date: Sun, 2 Feb 2020 11:48:16 -0300
From: Pedro Converso <pconver@?????.???>
To: Nico Janssen <hamsat@??????.??>
Cc: AMSAT <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] HuskySat 1 identified
Message-ID:
<CANTZqKk4dr99JBBK9Qqbo+arAYjC3vADwotxUP_ZxptHhJTfnQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Thanks! Nico,
Updated Object & Freq. to http://amsat.org.ar/pass?satx=HuskySat
73, lu7abf, Pedro
On 2/2/20, Nico Janssen via AMSAT-BB <amsat-bb@?????.???> wrote:
>
> Doppler measurements show that HuskySat 1 is
> object 45117 (2019-071G).
>
> Downlink frequency: 435.79973 MHz.
>
> 73,
> Nico PA0DLO
>
>
> _______________________________________________
> 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: Sun, 2 Feb 2020 15:57:42 +0000 (UTC)
From: Amsat Argentina <lu7aa@?????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: [amsat-bb] LU7AA Buoy sailing
Message-ID: <541107376.558360.1580659062617@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Thanks! for the over 260 WSPR Reporters following NEMO-1 drifting Buoy.
Reports at:http://lu7aa.org/buoy.asp?Pics: http://amsat.org.ar?f=buoy
Watching APRS capture on 145.825 to see any Sat digi.
73, LU7AA, AMSAT Argentina
------------------------------
Message: 5
Date: Sun, 2 Feb 2020 16:45:23 +0000
From: "Joseph B. Fitzgerald" <jfitzgerald@????.???.???>
To: Pedro Converso via AMSAT-BB <AMSAT-BB@?????.???>, Nico Janssen
<hamsat@??????.??>
Subject: Re: [amsat-bb] HuskySat 1 identified
Message-ID:
<BN6PR22MB069054C3D1125C7EC2234B0287010@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="us-ascii"
nasabare.txt has been updated to reflect this positive ID.
Thanks as always Nico!
de KM1P Joe
________________________________
From: AMSAT-BB <amsat-bb-bounces@?????.???> on behalf of Pedro Converso via
AMSAT-BB <amsat-bb@?????.???>
Sent: Sunday, February 2, 2020 9:48 AM
To: Nico Janssen <hamsat@??????.??>
Cc: AMSAT <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] HuskySat 1 identified
Thanks! Nico,
Updated Object & Freq. to http://amsat.org.ar/pass?satx=HuskySat
73, lu7abf, Pedro
On 2/2/20, Nico Janssen via AMSAT-BB <amsat-bb@?????.???> wrote:
>
> Doppler measurements show that HuskySat 1 is
> object 45117 (2019-071G).
>
> Downlink frequency: 435.79973 MHz.
>
> 73,
> Nico PA0DLO
>
>
> _______________________________________________
> 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: 6
Date: Sun, 2 Feb 2020 13:24:08 -0500
From: Joseph Armbruster <josepharmbruster@?????.???>
To: Chris Thompson <g0kla@????.???>
Cc: Amsat BB <amsat-bb@?????.???>, "Stephen E. Belter"
<seb@??????.???>
Subject: [amsat-bb] Building FoxTelem (follow up from Error accessing
FunCube Pro...)
Message-ID:
<CADkz4c9RZCEvORWxRCY-55Jb21kOAcUZxzX0khhoY6n4qDCnQA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Chris (et al),
This is a reference for anyone attempting to build FoxTelem independently
and maybe hack at it a bit. The current source available in github is
technically incomplete and can not be used to reproduce a release version.
I used master @ 7dd26797c88c30c9e6311907074eea037b394048.
Chris, if you can provide the missing pieces for me, I can create a
clean-patch that fixes that various pieces and allows it to build cleanly
out of github. I'll submit a patch back to you, if you'd like to integrate
it. Or, if you clean it all up, i'll pull and verify that it's all squeaky
clean.
This took me about an hour to hack through and get running, while helping
the kids with homework, so it's notta-bad! Here's what I had to do to get
everything building.
- clone: https://github.com/ac2cz/FoxTelem
- predict4java did not exist in the classpath.
* project library pointed to c:\users\chris\desktop\workspace\foxtelem\lib
- removed the predict4java Project (since it does not exist in the source
tree)
* Chris - you indicated this was a custom build, so this was expected :-)
- added jar located in /lib/predict4java.jar to libraries
* this did not work for me, so I went back on this and just...
- clone: https://github.com/davidmoten/predict4java.git\
* edits to SatPos to make it FoxTelem compatible (interface-wise... NOT
implementation-wise)
- made the isEclipsed function public
- added an empty placeholder GetDopplerFrequency method
- cloned: https://github.com/davidmoten/guava-mini.git
- to make FoxTelem compiler, I had to...
* add placeholder for missing function setCreateddate in FoxTLE
* fix getRangeCircle call in MapPanel, since it's expecting an double
array, but the call returns a list of positions... just updated the code to
use the Position instead instead
- Now, it runs! Though functionality will not match a deployed release,
due to the placeholder functions implemented above.
I'm all hands, let me know if you'd like some help!
73's
Joseph Armbruster
KJ4JIO
>
>>
------------------------------
Message: 7
Date: Sun, 2 Feb 2020 13:54:16 -0500
From: Roy Dean <royldean@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Tuning HuskySat-1 telemetry signal
Message-ID:
<CADGPg2unjam108TVvBEBmqqSy6t84t0jUVXzOk-de2_oF6+LiQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Since I can't post a picture to the group, I've started a QRZ thread:
https://forums.qrz.com/index.php?threads/huskysat-1-and-foxtelem.690761/
I'm getting good decodes, but my eye diagram looks more like a teardrop
than an "eye". Any suggestions?
--Roy
K3RLD
------------------------------
Message: 8
Date: Sun, 02 Feb 2020 14:18:55 -0500
From: "Mark L. Hammond" <marklhammond@?????.???>
To: Roy Dean <royldean@?????.???>,amsat-bb@?????.???
Subject: Re: [amsat-bb] Tuning HuskySat-1 telemetry signal
Message-ID: <20200202191856.EBEA98240@??????????.?????.???>
Content-Type: text/plain; charset="us-ascii"
Mine looks the same--using dot product (DP) decoder as well. The eye looks
prettier on Costas, but here copy isn't quite as good as the DP.
Using object "G" my recent 86 deg pass was fully automated! Carrier ranged
from like 1460 up to 1600 back down to 1450 ish again....super nice.
For IC-9700 users--AF over USB works fine, as does AF out of ACC 1 jack on
rear, as does AF out of Main EXT-SP jack on rear. (Not having much luck
using IQ for now...)
Mark N8MH
At 01:54 PM 2/2/2020 -0500, Roy Dean via AMSAT-BB wrote:
>Since I can't post a picture to the group, I've started a QRZ thread:
>
>https://forums.qrz.com/index.php?threads/huskysat-1-and-foxtelem.690761/
>
>I'm getting good decodes, but my eye diagram looks more like a teardrop
>than an "eye". Any suggestions?
>
>--Roy
>K3RLD
>_______________________________________________
>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: 9
Date: Sun, 2 Feb 2020 14:29:22 -0600
From: JoAnne K9JKM <joanne.k9jkm@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Tuning HuskySat-1 telemetry signal
Message-ID: <463ef5de-1c12-83b6-b21d-7e80efdd4e16@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
I'm using an SDRPlay RSP2 and SDRuno software to receive HuskySat here.
Antenna is a 7 element yagi fixed elevation on a TV rotor for azimuth.
This contraption is running on manual doppler tracking ... man does that
move fast ;-)
I seem to see about equal number of decodes between Costas and DP as
long as I track the tuning accurately enough. Thanks for pointing out
the different display between the two decoders. I thought I wasn't
tuning correctly when I first saw the different eye.
This is just me ... but when using Costas it seems I'm closer in tuning
as long as I can maintain a steady eyeball. For the DP decoder I'm
appearing to get better decodes when I keep the phasor display as steady
as possible.
On 2/2/2020 1:18 PM, Mark L. Hammond via AMSAT-BB wrote:
> Mine looks the same--using dot product (DP) decoder as well. The eye
looks prettier on Costas, but here copy isn't quite as good as the DP.
>
> Using object "G" my recent 86 deg pass was fully automated! Carrier
ranged from like 1460 up to 1600 back down to 1450 ish again....super nice.
>
> For IC-9700 users--AF over USB works fine, as does AF out of ACC 1 jack
on rear, as does AF out of Main EXT-SP jack on rear. (Not having much luck
using IQ for now...)
>
> Mark N8MH
>
>
> At 01:54 PM 2/2/2020 -0500, Roy Dean via AMSAT-BB wrote:
>> Since I can't post a picture to the group, I've started a QRZ thread:
>>
>> https://forums.qrz.com/index.php?threads/huskysat-1-and-foxtelem.690761/
>>
>> I'm getting good decodes, but my eye diagram looks more like a teardrop
>> than an "eye". Any suggestions?
>>
>> --Roy
>> K3RLD
>> _______________________________________________
>> 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
--
73 de JoAnne K9JKM
joanne.k9jkm@?????.???
------------------------------
Message: 10
Date: Sun, 2 Feb 2020 16:02:51 -0500
From: Burns Fisher <wb1fj-bb@??????.??>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Tuning HuskySat-1 telemetry signal
Message-ID:
<CABX7KxWEiK=KZ_kRLRwCwcFVVY1UBaZJ4AR2snzLtDSd1kooTg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I'm finding the opposite of Mark. Costas works much better for me than Dot
Product on FoxTelem when using a FunCubeDongle Pro Plus and IQ input. Yes,
the DP "eye" looks more like a triangle, and for Costas it is closer to
what you see on the FM satellites, but not exactly.
On Sun, Feb 2, 2020 at 3:32 PM JoAnne K9JKM via AMSAT-BB <amsat-bb@?????.???>
wrote:
> I'm using an SDRPlay RSP2 and SDRuno software to receive HuskySat here.
> Antenna is a 7 element yagi fixed elevation on a TV rotor for azimuth.
> This contraption is running on manual doppler tracking ... man does that
> move fast ;-)
>
> I seem to see about equal number of decodes between Costas and DP as
> long as I track the tuning accurately enough. Thanks for pointing out
> the different display between the two decoders. I thought I wasn't
> tuning correctly when I first saw the different eye.
>
> This is just me ... but when using Costas it seems I'm closer in tuning
> as long as I can maintain a steady eyeball. For the DP decoder I'm
> appearing to get better decodes when I keep the phasor display as steady
> as possible.
>
>
> On 2/2/2020 1:18 PM, Mark L. Hammond via AMSAT-BB wrote:
> > Mine looks the same--using dot product (DP) decoder as well. The eye
> looks prettier on Costas, but here copy isn't quite as good as the DP.
> >
> > Using object "G" my recent 86 deg pass was fully automated! Carrier
> ranged from like 1460 up to 1600 back down to 1450 ish again....super nice.
> >
> > For IC-9700 users--AF over USB works fine, as does AF out of ACC 1 jack
> on rear, as does AF out of Main EXT-SP jack on rear. (Not having much luck
> using IQ for now...)
> >
> > Mark N8MH
> >
> >
> > At 01:54 PM 2/2/2020 -0500, Roy Dean via AMSAT-BB wrote:
> >> Since I can't post a picture to the group, I've started a QRZ thread:
> >>
> >>
> https://forums.qrz.com/index.php?threads/huskysat-1-and-foxtelem.690761/
> >>
> >> I'm getting good decodes, but my eye diagram looks more like a teardrop
> >> than an "eye". Any suggestions?
> >>
> >> --Roy
> >> K3RLD
> >> _______________________________________________
> >> 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
>
> --
> 73 de JoAnne K9JKM
> joanne.k9jkm@?????.???
>
> _______________________________________________
> 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: Sun, 2 Feb 2020 19:50:45 -0500
From: John Brier <johnbrier@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] [Video] HuskySat-1 decoded with manual tuning and
no SDR
Message-ID:
<CALn0fKOCf3ycWQ7uVF3Z2UD+Sycd8=r2JCRzRxHo6e7s8a0h4g@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
After some difficulty, I was able to decode HuskySat-1 on my second attempt.
https://youtu.be/CisgT_umZQM
One thing I didn't mention in the video, at the end of the pass around
10 degrees elevation and lower I decoded a lot of frames because the
signal was still strong and by that point the frequency wasn't
changing much anymore, as the satellite's relative speed stopped
changing.
Thank you again to University of Washington for launching this
satellite and putting the AMSAT linear transponder on it! I wish you
luck in all your missions!
Check out the UW video about their satellite:
https://youtu.be/U57sES6oFgw
73, John Brier KG4AKV
------------------------------
Message: 12
Date: Sun, 2 Feb 2020 19:40:11 -0600
From: Zach Metzinger <zmetzing@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] [Video] HuskySat-1 decoded with manual tuning
and no SDR
Message-ID: <024b7d10-e853-c950-d9a5-37b7d4a9e1ff@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
On 02/02/20 18:50, John Brier via AMSAT-BB wrote:
> One thing I didn't mention in the video, at the end of the pass around
> 10 degrees elevation and lower I decoded a lot of frames because the
> signal was still strong and by that point the frequency wasn't
> changing much anymore, as the satellite's relative speed stopped
> changing.
The video is instructive as one can see the plotted constellation
"spinning" before symbol lock. Even after locking, the constellation
rotates, indicating a frequency error between the transmitter and
receiver presenting itself as a continuous phase rotation.
With an antipodal signal, the constellation diagram will tell you a lot
about received signal quality, including SNR (fuzzy points), interfering
signals (donuts), out-of-lock (one big circle), frequency/phase errors
(smeared clusters of points in a radial pattern).
A great technical read on vector modulation analysis:
http://literature.cdn.keysight.com/litweb/pdf/5091-8687E.pdf
--- Zach
N0ZGO
------------------------------
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 29
****************************************
Read previous mail | Read next mail
| |
