[amsat-bb] Chinese Lunar sats

Wed May 23 00:19:39 UTC 2018

>From earlier post.

韦明川 via <https://support.google.com/mail/answer/1311182?hl=en> amsat.org
May 19 (3 days ago)
to amsat-bb
Hi OMs,

If the One Drive link for DSLWP does not work, please have a try with this:
https://drive.google.com/file/d/16YQ3XvQ9hLp6ckpwFj4OkxO2ONzJ8
ZSw/view?usp=sharing

73!

Wei BG2BHC

On Tue, May 22, 2018 at 8:06 PM, Walter Holmes <walterh at k5wh.net> wrote:

> So where is this LIVE cd that is mentioned for these new sats?
>
> Thanks,
>
> Walter/K5WH
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Larry Howell
> Sent: Tuesday, May 22, 2018 3:27 PM
> To: Scott <scott23192 at gmail.com>; amsat-bb at amsat.org
> Subject: Re: [amsat-bb] Chinese Lunar sats
>
> 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 at gmail.com> 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 at gmail.com> 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 at xs4all.nl> 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 at amsat.org. 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 at amsat.org. 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 at amsat.org. 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 at amsat.org. 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
>