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CX2SA > SATDIG 22.05.18 22:54l 1023 Lines 34121 Bytes #999 (0) @ WW
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Sent: 180522/2042Z @:CX2SA.SAL.URY.SOAM #:43232 [Salto] FBB7.00e $:AMSATBB13173
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Chinese Lunar sats (Joe Pereira)
2. UBAKUSAT and 1KUNS-PF identified (Nico Janssen)
3. Re: Chinese Lunar sats (Nico Janssen)
4. FN 54 (Tom Schuessler)
5. Re: Chinese Lunar sats (Jean Marc Momple)
6. Re: Chinese Lunar sats (Edson W. R. Pereira)
7. Re: Chinese Lunar sats (Scott)
8. Re: Chinese Lunar sats (Jean Marc Momple)
9. FN54 Maine, one last pass (Tom Schuessler)
10. Re: Chinese Lunar sats (Scott)
11. Re: Chinese Lunar sats (Larry Howell)
----------------------------------------------------------------------
Message: 1
Date: Tue, 22 May 2018 20:54:44 +0930
From: Joe Pereira <joevk5ei@?????.???>
To: n1jez@?????????????????.???
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Chinese Lunar sats
Message-ID:
<CAEW3GkLpW=q5pm5GVeh12eRF94Fi1hgiZ9xZwA8=KrQaYB0G8w@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi Mike,
I have been following on this twitter feed https://twitter.com/bg2bhc
73, Joe
On Tue, May 22, 2018 at 7:45 PM, Mike Seguin <n1jez@?????????????????.???>
wrote:
> Any word on the two Chinese microsats LongJiang 1 & 2?
>
> --
>
> 73,
> Mike, N1JEZ
> "A closed mouth gathers no feet"
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 2
Date: Tue, 22 May 2018 14:09:15 +0200
From: Nico Janssen <hamsat@??????.??>
To: AMSAT BB <amsat-bb@?????.???>, Ray Hoad <ray.hoad@????????.???>
Subject: [amsat-bb] UBAKUSAT and 1KUNS-PF identified
Message-ID: <6aa35bb4-a5aa-24e9-55d4-ddc33c70ec9e@??????.??>
Content-Type: text/plain; charset=utf-8; format=flowed
All,
Detailed doppler measurements show that UBAKUSAT
is object 43467 (1998-067NQ) and 1KUNS-PF is object
43466 (1998-067NP).
73,
Nico PA0DLO
------------------------------
Message: 3
Date: Tue, 22 May 2018 15:03:25 +0200
From: Nico Janssen <hamsat@??????.??>
To: n1jez@?????????????????.???? AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Chinese Lunar sats
Message-ID: <e513f944-c3cb-acc7-0ff0-1941765a7f30@??????.??>
Content-Type: text/plain; charset=utf-8; format=flowed
After their launch on 2018-05-20 at 21:28 UTC, LJ 1 and LJ 2 were
maneuvered onto a track to the Moon. Several amateurs received
telemetry from the satellites. But now LJ 1 appears to encounter
problems.
Quoting Wei BG2BHC:
"Can you help to find amateurs in the US to help to monitor DSLWP-A
on 435.425 and 436.425 now?
We lost the contact of satellite A on S band after an orbit adjustment.
We just tried to switch on UHF, but we don't know if it works or not.
The sat is just above South America.
If it works, 435.425 should be 500bps GMSK and JT4 alternately.
436.425 should be 250 bps GMSK.? Bothtransmit once in 5 minutes.
Thank you very much!
Wei"
73,
Nico PA0DLO
On 22-05-18 12:15, Mike Seguin wrote:
> Any word on the two Chinese microsats LongJiang 1 & 2?
>
------------------------------
Message: 4
Date: Tue, 22 May 2018 10:06:26 -0400
From: Tom Schuessler <tjschuessler@???????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] FN 54
Message-ID: <0A7243A2-788E-4B2B-88ED-F88545C13613@???????.???>
Content-Type: text/plain; charset=us-ascii
I will be on a fox 1D 92 pass over east central US at 1454Z and a 91 pass
that hits western UK at 15 08Z this morning from FN 54 see you there
Tom. N5HYP
Sent from my iPhone
------------------------------
Message: 5
Date: Tue, 22 May 2018 20:21:28 +0400
From: Jean Marc Momple <jean.marc.momple@?????.???>
To: Nico Janssen <hamsat@??????.??>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Chinese Lunar sats
Message-ID: <C680DB3D-F150-4F62-BD84-91C07E3FC159@?????.???>
Content-Type: text/plain; charset=utf-8
Nico,
I have been trying to capture the signals from the both Longjiang sats for
the past 2 days.
On Monday it seems that I receive a carrier on the right frequency but was
not able to confirm that it was from Longjiang 1.
I used the initial Keppler?s and now using Celestrac in SatPC32 which seems
to be OK when comparing with N2YO ele/az. I have been monitoring on the
announced FX and having also JT4G ?on? for about this evening without any
results.
For sure I am doing something wrong but cannot figure it out due to the lack
of information.
Also, trying to get a decoder software for the GMSK telemetry is quite
difficult for a non-IT geek, I don?t have clue how to have the published
GITHUB decoder to work on my Windows computers?
Here we are this side.
Quite frustrating that the communication is not that good, as if the project
team want the maximum of feedback and TLM they should provide a minimum of
info. Just a personal opinion.
Anyway will try hard to receive these birds as a real opportunity for HAM to
learn more on outer space com, if anyone can help and share, particularly
the guys who already decoded the birds, it would be more welcomed.
73
Jean Marc (3B8DU)
> On May 22, 2018, at 5:03 PM, Nico Janssen <hamsat@??????.??> wrote:
>
> After their launch on 2018-05-20 at 21:28 UTC, LJ 1 and LJ 2 were
> maneuvered onto a track to the Moon. Several amateurs received
> telemetry from the satellites. But now LJ 1 appears to encounter
> problems.
>
> Quoting Wei BG2BHC:
> "Can you help to find amateurs in the US to help to monitor DSLWP-A
> on 435.425 and 436.425 now?
> We lost the contact of satellite A on S band after an orbit adjustment.
> We just tried to switch on UHF, but we don't know if it works or not.
> The sat is just above South America.
> If it works, 435.425 should be 500bps GMSK and JT4 alternately.
> 436.425 should be 250 bps GMSK. Bothtransmit once in 5 minutes.
>
> Thank you very much!
>
> Wei"
>
> 73,
> Nico PA0DLO
>
> On 22-05-18 12:15, Mike Seguin wrote:
>> Any word on the two Chinese microsats LongJiang 1 & 2?
>>
>
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Tue, 22 May 2018 13:38:54 -0300
From: "Edson W. R. Pereira" <ewpereira@?????.???>
To: Jean Marc Momple <jean.marc.momple@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Chinese Lunar sats
Message-ID:
<CALNQy4-wRbgaDc=iypja8GPecSpzRbcqu5pZxciXL_1gzfXokg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Jean,
I suggest usign the live Ubuntu ISO image with gnuradio and the necessary
OOT modules for monitoring the GMSK signals. While installing gnuradio and
the OOT modules manually can be done, it takes some effort. Running the
live image is much easier. You do need a fast computer with at least four
CPU cores to be able to run all the flowgraphs.
I had some difficulties with the doppler correction in my setup during the
first pass. The predictions seemed off and I had to manually adjust the
frequency offset to get the signals into the demodulators' passbands. Once
that was done, I could decode the GMSK telemetry from both satellites up to
64000 km. Above 64000 km, my small antenna was no longer enough. I will get
a better antenna ready and will try monitoring again over the weekend.
73, Edson PY2SDR
On Tue, May 22, 2018 at 1:21 PM, Jean Marc Momple <
jean.marc.momple@?????.???> wrote:
> Nico,
>
> I have been trying to capture the signals from the both Longjiang sats for
> the past 2 days.
>
> On Monday it seems that I receive a carrier on the right frequency but was
> not able to confirm that it was from Longjiang 1.
>
> I used the initial Keppler?s and now using Celestrac in SatPC32 which
> seems to be OK when comparing with N2YO ele/az. I have been monitoring on
> the announced FX and having also JT4G ?on? for about this evening without
> any results.
>
> For sure I am doing something wrong but cannot figure it out due to the
> lack of information.
>
> Also, trying to get a decoder software for the GMSK telemetry is quite
> difficult for a non-IT geek, I don?t have clue how to have the published
> GITHUB decoder to work on my Windows computers?
>
> Here we are this side.
>
> Quite frustrating that the communication is not that good, as if the
> project team want the maximum of feedback and TLM they should provide a
> minimum of info. Just a personal opinion.
>
> Anyway will try hard to receive these birds as a real opportunity for HAM
> to learn more on outer space com, if anyone can help and share,
> particularly the guys who already decoded the birds, it would be more
> welcomed.
>
> 73
>
>
>
> Jean Marc (3B8DU)
>
>
>
>
>
> > On May 22, 2018, at 5:03 PM, Nico Janssen <hamsat@??????.??> wrote:
> >
> > After their launch on 2018-05-20 at 21:28 UTC, LJ 1 and LJ 2 were
> > maneuvered onto a track to the Moon. Several amateurs received
> > telemetry from the satellites. But now LJ 1 appears to encounter
> > problems.
> >
> > Quoting Wei BG2BHC:
> > "Can you help to find amateurs in the US to help to monitor DSLWP-A
> > on 435.425 and 436.425 now?
> > We lost the contact of satellite A on S band after an orbit adjustment.
> > We just tried to switch on UHF, but we don't know if it works or not.
> > The sat is just above South America.
> > If it works, 435.425 should be 500bps GMSK and JT4 alternately.
> > 436.425 should be 250 bps GMSK. Bothtransmit once in 5 minutes.
> >
> > Thank you very much!
> >
> > Wei"
> >
> > 73,
> > Nico PA0DLO
> >
> > On 22-05-18 12:15, Mike Seguin wrote:
> >> Any word on the two Chinese microsats LongJiang 1 & 2?
> >>
> >
> > _______________________________________________
> > 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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 7
Date: Tue, 22 May 2018 12:42:04 -0400
From: "Scott" <scott23192@?????.???>
To: <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Chinese Lunar sats
Message-ID: <156D05E0F4454A6D91C1C17288E9E9AF@???????>
Content-Type: text/plain; format=flowed; charset="UTF-8";
reply-type=original
Greetings!
The software on github (https://github.com/bg2bhc/gr-dslwp) is for use in
GNU Radio on linux, so a Windows computer would not be helpful for that.
In the hours after launch, several Amateurs
(http://lilacsat.hit.edu.cn/dashboard/pages_en/contribute.html)
successfully decoded the 70cm telemetry using those GNU Radio flowgraphs (I
got some partial decodes but low SNR here prevented me from getting complete
packets - but I was still very pleased!).
Last night (U.S. time), I'm not aware of anyone receiving any of the 70cm
telemetry. We were asked to watch for JT4 as well, but I'm not aware that
any was received.
As mentioned earlier in this thread, the team has lost S-Band contact with
one of the cubesats. I'm not setup to receive those frequencies but others
are watching for the signals.
For an average station like myself, the plan will be to continue to watch
for 70cm telemetry with the GNU Radio software & JT4 with a second SDR.
Hope that helps!
-Scott, K4KDR
===========================================
-----Original Message-----
From: Jean Marc Momple
Sent: Tuesday, May 22, 2018 12:21 PM
To: Nico Janssen
Cc: AMSAT BB
Subject: Re: [amsat-bb] Chinese Lunar sats
Nico,
I have been trying to capture the signals from the both Longjiang sats for
the past 2 days.
On Monday it seems that I receive a carrier on the right frequency but was
not able to confirm that it was from Longjiang 1.
I used the initial Keppler?s and now using Celestrac in SatPC32 which seems
to be OK when comparing with N2YO ele/az. I have been monitoring on the
announced FX and having also JT4G ?on? for about this evening without any
results.
For sure I am doing something wrong but cannot figure it out due to the lack
of information.
Also, trying to get a decoder software for the GMSK telemetry is quite
difficult for a non-IT geek, I don?t have clue how to have the published
GITHUB decoder to work on my Windows computers?
Here we are this side.
Quite frustrating that the communication is not that good, as if the project
team want the maximum of feedback and TLM they should provide a minimum of
info. Just a personal opinion.
Anyway will try hard to receive these birds as a real opportunity for HAM to
learn more on outer space com, if anyone can help and share, particularly
the guys who already decoded the birds, it would be more welcomed.
73
Jean Marc (3B8DU)
> On May 22, 2018, at 5:03 PM, Nico Janssen <hamsat@??????.??> wrote:
>
> After their launch on 2018-05-20 at 21:28 UTC, LJ 1 and LJ 2 were
> maneuvered onto a track to the Moon. Several amateurs received
> telemetry from the satellites. But now LJ 1 appears to encounter
> problems.
>
> Quoting Wei BG2BHC:
> "Can you help to find amateurs in the US to help to monitor DSLWP-A
> on 435.425 and 436.425 now?
> We lost the contact of satellite A on S band after an orbit adjustment.
> We just tried to switch on UHF, but we don't know if it works or not.
> The sat is just above South America.
> If it works, 435.425 should be 500bps GMSK and JT4 alternately.
> 436.425 should be 250 bps GMSK. Bothtransmit once in 5 minutes.
>
> Thank you very much!
>
> Wei"
>
> 73,
> Nico PA0DLO
>
> On 22-05-18 12:15, Mike Seguin wrote:
>> Any word on the two Chinese microsats LongJiang 1 & 2?
------------------------------
Message: 8
Date: Tue, 22 May 2018 21:50:18 +0400
From: Jean Marc Momple <jean.marc.momple@?????.???>
To: Scott <scott23192@?????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] Chinese Lunar sats
Message-ID: <48F2B395-BFFE-4C64-A8E0-77309222C03F@?????.???>
Content-Type: text/plain; charset=utf-8
Scott,
Thanks and my greetings to you also.
Very clear and thank you for the insights.
Unfortunately I don?t have the required skills about linux and IT, in spite
having quite a good RF knowledge (some 40 years professionally in SATs,
Mobile, PMR, microwave and mobile up to 5G now), i just know how to install
the APP?s o a PC and to do some basics settings?
Also, my station is quite average as yours, as the Longjiang experiment is
quite interesting will continue to watch out and try receive some signals
from these birds. But again wish to stress that the project managers would
have much more audience and feedback if sharing more info (basic marketing),
just a honest comment for improvement in such future projects. This seems
always to be the case in such HAM sat ventures, that the direct stakeholders
are so taken with urgent matters (fully understood) that they fail to
communicate well to get the best feedback after launch from the HAM
community which actually would help them a lot in assessing there bird
performance.
Hope my comments will help to improve our beloved projects.
73
Jean Marc (3B8DU)
> On May 22, 2018, at 8:42 PM, Scott <scott23192@?????.???> wrote:
>
> Greetings!
>
> The software on github (https://github.com/bg2bhc/gr-dslwp) is for use in
GNU Radio on linux, so a Windows computer would not be helpful for that.
>
> In the hours after launch, several Amateurs
(http://lilacsat.hit.edu.cn/dashboard/pages_en/contribute.html) successfully
decoded the 70cm telemetry using those GNU Radio flowgraphs (I got some
partial decodes but low SNR here prevented me from getting complete packets
- but I was still very pleased!).
>
> Last night (U.S. time), I'm not aware of anyone receiving any of the 70cm
telemetry. We were asked to watch for JT4 as well, but I'm not aware that
any was received.
>
> As mentioned earlier in this thread, the team has lost S-Band contact with
one of the cubesats. I'm not setup to receive those frequencies but others
are watching for the signals.
>
> For an average station like myself, the plan will be to continue to watch
for 70cm telemetry with the GNU Radio software & JT4 with a second SDR.
>
> Hope that helps!
>
> -Scott, K4KDR
>
>
> ===========================================
>
> -----Original Message----- From: Jean Marc Momple
> Sent: Tuesday, May 22, 2018 12:21 PM
> To: Nico Janssen
> Cc: AMSAT BB
> Subject: Re: [amsat-bb] Chinese Lunar sats
>
> Nico,
>
> I have been trying to capture the signals from the both Longjiang sats for
the past 2 days.
>
> On Monday it seems that I receive a carrier on the right frequency but was
not able to confirm that it was from Longjiang 1.
>
> I used the initial Keppler?s and now using Celestrac in SatPC32 which
seems to be OK when comparing with N2YO ele/az. I have been monitoring on
the announced FX and having also JT4G ?on? for about this evening without
any results.
>
> For sure I am doing something wrong but cannot figure it out due to the
lack of information.
>
> Also, trying to get a decoder software for the GMSK telemetry is quite
difficult for a non-IT geek, I don?t have clue how to have the published
GITHUB decoder to work on my Windows computers?
>
> Here we are this side.
>
> Quite frustrating that the communication is not that good, as if the
project team want the maximum of feedback and TLM they should provide a
minimum of info. Just a personal opinion.
>
> Anyway will try hard to receive these birds as a real opportunity for HAM
to learn more on outer space com, if anyone can help and share, particularly
the guys who already decoded the birds, it would be more welcomed.
>
> 73
>
>
>
> Jean Marc (3B8DU)
>
>
>
>
>
>> On May 22, 2018, at 5:03 PM, Nico Janssen <hamsat@??????.??> wrote:
>>
>> After their launch on 2018-05-20 at 21:28 UTC, LJ 1 and LJ 2 were
>> maneuvered onto a track to the Moon. Several amateurs received
>> telemetry from the satellites. But now LJ 1 appears to encounter
>> problems.
>>
>> Quoting Wei BG2BHC:
>> "Can you help to find amateurs in the US to help to monitor DSLWP-A
>> on 435.425 and 436.425 now?
>> We lost the contact of satellite A on S band after an orbit adjustment.
>> We just tried to switch on UHF, but we don't know if it works or not.
>> The sat is just above South America.
>> If it works, 435.425 should be 500bps GMSK and JT4 alternately.
>> 436.425 should be 250 bps GMSK. Bothtransmit once in 5 minutes.
>>
>> Thank you very much!
>>
>> Wei"
>>
>> 73,
>> Nico PA0DLO
>>
>> On 22-05-18 12:15, Mike Seguin wrote:
>>> Any word on the two Chinese microsats LongJiang 1 & 2?
>
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 9
Date: Tue, 22 May 2018 15:00:37 -0400
From: Tom Schuessler <tjschuessler@???????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] FN54 Maine, one last pass
Message-ID: <89EF37BF-A355-41AC-B4D6-16793991F19E@???????.???>
Content-Type: text/plain; charset=utf-8
Hi all,
Pat Stoddard asked me for the grid and so I will try what for me is an 8?
Fox 92 pass at 309Z, my local 2309 Eastern Tuesday evening. Would like to
see western and central US stations Who need this grid to call.
N5HYP
Sent from my iPhone
------------------------------
Message: 10
Date: Tue, 22 May 2018 16:32:33 -0400
From: Scott <scott23192@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Chinese Lunar sats
Message-ID:
<CAJCSnOZjnDAMpkm6r21zEcHmFaJW=P_N+SXdpo8wgqVCKtS7gw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Very good point, Larry. Thanks for mentioning that.
Before I had a computer dedicated to linux-only, on numerous past projects
that required GNU Radio I used a bootable CD and it works great. Your base
operating system is untouched.
There are performance advantages to having linux installed on a dedicated
computer, but to learn what linux & GNU Radio is about, the bootable CD is
a great option.
-Scott, K4KDR
=======================
On Tue, May 22, 2018 at 4:26 PM, Larry Howell <larry.howell.47@?????.???>
wrote:
> Scott and the other Windows users,
>
> Windows is completely ignored. The live Linux CD is live! You insert it
> in your DVD/CD drive and reboot your PC. Linux will load into RAM and run
> exclusively from RAM. It has a desktop not much different from a Windows
> PC or an Apple Mac. Give it a try. My mother started using Linux when she
> was 84, and she certainly didn't have an IT background!
>
> Larry AC8YE
>
> On Tue, May 22, 2018 at 1:50 PM, Jean Marc Momple <
> jean.marc.momple@?????.???> wrote:
>
>>
>> Scott,
>>
>> Thanks and my greetings to you also.
>>
>> Very clear and thank you for the insights.
>>
>> Unfortunately I don?t have the required skills about linux and IT, in
>> spite having quite a good RF knowledge (some 40 years professionally in
>> SATs, Mobile, PMR, microwave and mobile up to 5G now), i just know how to
>> install the APP?s o a PC and to do some basics settings?
>>
>> Also, my station is quite average as yours, as the Longjiang experiment
>> is quite interesting will continue to watch out and try receive some
>> signals from these birds. But again wish to stress that the project
>> managers would have much more audience and feedback if sharing more info
>> (basic marketing), just a honest comment for improvement in such future
>> projects. This seems always to be the case in such HAM sat ventures, that
>> the direct stakeholders are so taken with urgent matters (fully understood)
>> that they fail to communicate well to get the best feedback after launch
>> from the HAM community which actually would help them a lot in assessing
>> there bird performance.
>>
>> Hope my comments will help to improve our beloved projects.
>>
>> 73
>>
>>
>> Jean Marc (3B8DU)
>>
>>
>> > On May 22, 2018, at 8:42 PM, Scott <scott23192@?????.???> wrote:
>> >
>> > Greetings!
>> >
>> > The software on github (https://github.com/bg2bhc/gr-dslwp) is for
>> use in GNU Radio on linux, so a Windows computer would not be helpful for
>> that.
>> >
>> > In the hours after launch, several Amateurs (
>> http://lilacsat.hit.edu.cn/dashboard/pages_en/contribute.html)
>> successfully decoded the 70cm telemetry using those GNU Radio flowgraphs (I
>> got some partial decodes but low SNR here prevented me from getting
>> complete packets - but I was still very pleased!).
>> >
>> > Last night (U.S. time), I'm not aware of anyone receiving any of the
>> 70cm telemetry. We were asked to watch for JT4 as well, but I'm not aware
>> that any was received.
>> >
>> > As mentioned earlier in this thread, the team has lost S-Band contact
>> with one of the cubesats. I'm not setup to receive those frequencies but
>> others are watching for the signals.
>> >
>> > For an average station like myself, the plan will be to continue to
>> watch for 70cm telemetry with the GNU Radio software & JT4 with a second
>> SDR.
>> >
>> > Hope that helps!
>> >
>> > -Scott, K4KDR
>> >
>> >
>> > ===========================================
>> >
>> > -----Original Message----- From: Jean Marc Momple
>> > Sent: Tuesday, May 22, 2018 12:21 PM
>> > To: Nico Janssen
>> > Cc: AMSAT BB
>> > Subject: Re: [amsat-bb] Chinese Lunar sats
>> >
>> > Nico,
>> >
>> > I have been trying to capture the signals from the both Longjiang sats
>> for the past 2 days.
>> >
>> > On Monday it seems that I receive a carrier on the right frequency but
>> was not able to confirm that it was from Longjiang 1.
>> >
>> > I used the initial Keppler?s and now using Celestrac in SatPC32 which
>> seems to be OK when comparing with N2YO ele/az. I have been monitoring on
>> the announced FX and having also JT4G ?on? for about this evening without
>> any results.
>> >
>> > For sure I am doing something wrong but cannot figure it out due to the
>> lack of information.
>> >
>> > Also, trying to get a decoder software for the GMSK telemetry is quite
>> difficult for a non-IT geek, I don?t have clue how to have the published
>> GITHUB decoder to work on my Windows computers?
>> >
>> > Here we are this side.
>> >
>> > Quite frustrating that the communication is not that good, as if the
>> project team want the maximum of feedback and TLM they should provide a
>> minimum of info. Just a personal opinion.
>> >
>> > Anyway will try hard to receive these birds as a real opportunity for
>> HAM to learn more on outer space com, if anyone can help and share,
>> particularly the guys who already decoded the birds, it would be more
>> welcomed.
>> >
>> > 73
>> >
>> >
>> >
>> > Jean Marc (3B8DU)
>> >
>> >
>> >
>> >
>> >
>> >> On May 22, 2018, at 5:03 PM, Nico Janssen <hamsat@??????.??> wrote:
>> >>
>> >> After their launch on 2018-05-20 at 21:28 UTC, LJ 1 and LJ 2 were
>> >> maneuvered onto a track to the Moon. Several amateurs received
>> >> telemetry from the satellites. But now LJ 1 appears to encounter
>> >> problems.
>> >>
>> >> Quoting Wei BG2BHC:
>> >> "Can you help to find amateurs in the US to help to monitor DSLWP-A
>> >> on 435.425 and 436.425 now?
>> >> We lost the contact of satellite A on S band after an orbit adjustment.
>> >> We just tried to switch on UHF, but we don't know if it works or not.
>> >> The sat is just above South America.
>> >> If it works, 435.425 should be 500bps GMSK and JT4 alternately.
>> >> 436.425 should be 250 bps GMSK. Bothtransmit once in 5 minutes.
>> >>
>> >> Thank you very much!
>> >>
>> >> Wei"
>> >>
>> >> 73,
>> >> Nico PA0DLO
>> >>
>> >> On 22-05-18 12:15, Mike Seguin wrote:
>> >>> Any word on the two Chinese microsats LongJiang 1 & 2?
>>
>
------------------------------
Message: 11
Date: Tue, 22 May 2018 16:26:41 -0400
From: Larry Howell <larry.howell.47@?????.???>
To: Scott <scott23192@?????.???>, amsat-bb@?????.???
Subject: Re: [amsat-bb] Chinese Lunar sats
Message-ID:
<CAMiRMkJy3dhGqqLGPiH5xHpAvhsf6Y4eiQF+0KReoU_tgc0_fg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Scott and the other Windows users,
Windows is completely ignored. The live Linux CD is live! You insert it
in your DVD/CD drive and reboot your PC. Linux will load into RAM and run
exclusively from RAM. It has a desktop not much different from a Windows
PC or an Apple Mac. Give it a try. My mother started using Linux when she
was 84, and she certainly didn't have an IT background!
Larry AC8YE
On Tue, May 22, 2018 at 1:50 PM, Jean Marc Momple <
jean.marc.momple@?????.???> wrote:
>
> Scott,
>
> Thanks and my greetings to you also.
>
> Very clear and thank you for the insights.
>
> Unfortunately I don?t have the required skills about linux and IT, in
> spite having quite a good RF knowledge (some 40 years professionally in
> SATs, Mobile, PMR, microwave and mobile up to 5G now), i just know how to
> install the APP?s o a PC and to do some basics settings?
>
> Also, my station is quite average as yours, as the Longjiang experiment is
> quite interesting will continue to watch out and try receive some signals
> from these birds. But again wish to stress that the project managers would
> have much more audience and feedback if sharing more info (basic
> marketing), just a honest comment for improvement in such future projects.
> This seems always to be the case in such HAM sat ventures, that the direct
> stakeholders are so taken with urgent matters (fully understood) that they
> fail to communicate well to get the best feedback after launch from the HAM
> community which actually would help them a lot in assessing there bird
> performance.
>
> Hope my comments will help to improve our beloved projects.
>
> 73
>
>
> Jean Marc (3B8DU)
>
>
> > On May 22, 2018, at 8:42 PM, Scott <scott23192@?????.???> wrote:
> >
> > Greetings!
> >
> > The software on github (https://github.com/bg2bhc/gr-dslwp) is for use
> in GNU Radio on linux, so a Windows computer would not be helpful for that.
> >
> > In the hours after launch, several Amateurs (http://lilacsat.hit.edu.cn/
> dashboard/pages_en/contribute.html) successfully decoded the 70cm
> telemetry using those GNU Radio flowgraphs (I got some partial decodes but
> low SNR here prevented me from getting complete packets - but I was still
> very pleased!).
> >
> > Last night (U.S. time), I'm not aware of anyone receiving any of the
> 70cm telemetry. We were asked to watch for JT4 as well, but I'm not aware
> that any was received.
> >
> > As mentioned earlier in this thread, the team has lost S-Band contact
> with one of the cubesats. I'm not setup to receive those frequencies but
> others are watching for the signals.
> >
> > For an average station like myself, the plan will be to continue to
> watch for 70cm telemetry with the GNU Radio software & JT4 with a second
> SDR.
> >
> > Hope that helps!
> >
> > -Scott, K4KDR
> >
> >
> > ===========================================
> >
> > -----Original Message----- From: Jean Marc Momple
> > Sent: Tuesday, May 22, 2018 12:21 PM
> > To: Nico Janssen
> > Cc: AMSAT BB
> > Subject: Re: [amsat-bb] Chinese Lunar sats
> >
> > Nico,
> >
> > I have been trying to capture the signals from the both Longjiang sats
> for the past 2 days.
> >
> > On Monday it seems that I receive a carrier on the right frequency but
> was not able to confirm that it was from Longjiang 1.
> >
> > I used the initial Keppler?s and now using Celestrac in SatPC32 which
> seems to be OK when comparing with N2YO ele/az. I have been monitoring on
> the announced FX and having also JT4G ?on? for about this evening without
> any results.
> >
> > For sure I am doing something wrong but cannot figure it out due to the
> lack of information.
> >
> > Also, trying to get a decoder software for the GMSK telemetry is quite
> difficult for a non-IT geek, I don?t have clue how to have the published
> GITHUB decoder to work on my Windows computers?
> >
> > Here we are this side.
> >
> > Quite frustrating that the communication is not that good, as if the
> project team want the maximum of feedback and TLM they should provide a
> minimum of info. Just a personal opinion.
> >
> > Anyway will try hard to receive these birds as a real opportunity for
> HAM to learn more on outer space com, if anyone can help and share,
> particularly the guys who already decoded the birds, it would be more
> welcomed.
> >
> > 73
> >
> >
> >
> > Jean Marc (3B8DU)
> >
> >
> >
> >
> >
> >> On May 22, 2018, at 5:03 PM, Nico Janssen <hamsat@??????.??> wrote:
> >>
> >> After their launch on 2018-05-20 at 21:28 UTC, LJ 1 and LJ 2 were
> >> maneuvered onto a track to the Moon. Several amateurs received
> >> telemetry from the satellites. But now LJ 1 appears to encounter
> >> problems.
> >>
> >> Quoting Wei BG2BHC:
> >> "Can you help to find amateurs in the US to help to monitor DSLWP-A
> >> on 435.425 and 436.425 now?
> >> We lost the contact of satellite A on S band after an orbit adjustment.
> >> We just tried to switch on UHF, but we don't know if it works or not.
> >> The sat is just above South America.
> >> If it works, 435.425 should be 500bps GMSK and JT4 alternately.
> >> 436.425 should be 250 bps GMSK. Bothtransmit once in 5 minutes.
> >>
> >> Thank you very much!
> >>
> >> Wei"
> >>
> >> 73,
> >> Nico PA0DLO
> >>
> >> On 22-05-18 12:15, Mike Seguin wrote:
> >>> Any word on the two Chinese microsats LongJiang 1 & 2?
> >
> > _______________________________________________
> > 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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
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!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 13, Issue 173
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