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CX2SA > SATDIG 31.05.18 01:13l 1417 Lines 46116 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: LongJiang and Doppler correction (Dimitry Borzenko)
2. Re: Emails from AMSAT Website (Steve Saner)
3. Re: LongJiang and Doppler correction (Mike Rupprecht)
4. Re: LongJiang and Doppler correction (Dimitry Borzenko)
5. Re: Help with SatPC32 Labjack Yaesu 5500 rotator control
(Erich Eichmann)
6. Re: Help with SatPC32 Labjack Yaesu 5500 rotator control (Alan)
7. Satellites in TX Factor Show + Bulgaria CubeSat (M5AKA)
8. Upcoming ARISS contact with Sterrenschool De Globetrotter,
Rotterdam, The Netherlands (n4csitwo@?????????.????
----------------------------------------------------------------------
Message: 1
Date: Wed, 30 May 2018 15:16:54 +0000
From: "Dimitry Borzenko" <dibor@?????.???>
To: "Mike Rupprecht" <mail@??????????????.??>, "'AMSAT BB'"
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] LongJiang and Doppler correction
Message-ID: <em30869bf7-881e-4406-bb78-94cfd25abb1c@?????>
Content-Type: text/plain; format=flowed; charset=utf-8
Or set path to some file with chosen name and rename every new
downloaded file and overwrite existed.
Regards.
------ Original Message ------
From: "Dimitry Borzenko" <dibor@?????.???>
To: "Mike Rupprecht" <mail@??????????????.??>; "'AMSAT BB'"
<amsat-bb@?????.???>
Sent: 30.05.2018 18:10:29
Subject: Re: AW: AW: [amsat-bb] LongJiang and Doppler correction
>Hi Mike.
>Understood.
>Program Tracking CC block request exact file, path is not enough.
>I should to change every day/ two days Program Tracking CC setting for
>each demodulator?
>Or I do not understand something?
>
>Regards.
>
>------ Original Message ------
>From: "Mike Rupprecht" <mail@??????????????.??>
>To: "'Dimitry Borzenko'" <dibor@?????.???>; "'AMSAT BB'"
><amsat-bb@?????.???>
>Sent: 30.05.2018 17:23:48
>Subject: AW: AW: [amsat-bb] LongJiang and Doppler correction
>
>>Dimitry,
>>
>>the default directory is /home/lilac/lilacsat/gr-dslwp/examples/
>>Edit the correct path in the Program Tracking CC block.
>>
>>73 Mike
>>DK3WN
>>
>>-----Urspr?ngliche Nachricht-----
>>Von: Dimitry Borzenko [mailto:dibor@?????.????
>>Gesendet: 30 May 2018 14:58
>>An: Mike Rupprecht; 'AMSAT BB'
>>Betreff: Re: AW: [amsat-bb] LongJiang and Doppler correction
>>
>>Hello Mike.
>>I saw new files but I do not know where I should to put this file
>>(which folder?).
>>
>>Regards.
>>
>>
>>------ Original Message ------
>>From: "Mike Rupprecht" <mail@??????????????.??>
>>To: "'Dimitry Borzenko'" <dibor@?????.???>; "'AMSAT BB'"
>><amsat-bb@?????.???>
>>Sent: 30.05.2018 14:56:51
>>Subject: AW: [amsat-bb] LongJiang and Doppler correction
>>
>>>Hi Dimitry,
>>>
>>>TLE are useles in lunar orbit.
>>>
>>>You have to update the tracking file in all four decoders.
>>>
>>>https://github.com/bg2bhc/dslwp_doc/blob/master/program_tracking_dslwp-
>>>b_201
>>>80529.txt
>>>
>>>(or later files)
>>>
>>>73 Mike
>>>DK3WN
>>>
>>>-----Urspr?ngliche Nachricht-----
>>>Von: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? Im Auftrag von
>>>Dimitry Borzenko
>>>Gesendet: 30 May 2018 10:36
>>>An: AMSAT BB
>>>Betreff: Re: [amsat-bb] LongJiang and Doppler correction
>>>
>>>Hello.
>>>Have problem with running Live CD.
>>>Have made USB bootable diskONkey , system is runs.
>>>Mun Downlink Proxy is configured and Orbit TLE can be downloaded, but
>>>ALL ports is NOT connected!
>>>RTL is running and freq. calibrated.
>>>Also while running Decoder got 4 terminals running and have some
>>>message about "File is not find or EOF ....."
>>>
>>>What I did wrong?
>>>
>>>de 4z5cp.
>>>
>>>
>>>------ Original Message ------
>>>From: "Scott" <scott23192@?????.???>
>>>To: "AMSAT BB" <amsat-bb@?????.???>
>>>Sent: 30.05.2018 2:30:33
>>>Subject: Re: [amsat-bb] LongJiang and Doppler correction
>>>
>>>>Hi Jean Marc.
>>>>
>>>>I have tried to follow the news of these lunar satellites. While
>>>>several of the guys with DSN capability have received the S-Band
>>>>downlinks, I'm not aware of anyone hearing anything on 70cm past the
>>>>first day as the sats left Earth.
>>>>
>>>>In fact, even though I am listening every night for the 70cm
>>>>telemetry
>>>>(using the team's GNU Radio flowgraphs), I have not heard any
>>>>confirmation that the 70cm transmitter is even on (telemetry -or-
>>>>JT4).
>>>>
>>>>-Scott, K4KDR
>>>>
>>>>
>>>>=======================================================
>>>>
>>>>-----Original Message----- From: Jean Marc Momple
>>>>Sent: Tuesday, May 29, 2018 12:37 PM
>>>>To: AMSAT BB
>>>>Subject: Re: [amsat-bb] LongJiang and Doppler correction
>>>>
>>>>Dear All,
>>>>
>>>>May be a stupid question for the experts, but genuine from me.
>>>>
>>>>Has anyone received any FT4G beacon signal from the Longiang Sats so
>>>>far?
>>>>
>>>>I have being trying to do so for the past week without success.
>>>>
>>>>73
>>>>
>>>>
>>>>Jean Marc (3B8DU)
>>>>
>>>>
>>>>
>>>>
>>>>>On May 26, 2018, at 8:54 PM, Nico Janssen <hamsat@??????.??> wrote:
>>>>>
>>>>>
>>>>>In the coming days the doppler shift on the 70 cm downlink of
>>>>>LongJiang 2 will vary between +2000 and -2200 Hz (for my QTH).
>>>>>This can easily be calculated with GMAT using the script I
>>>>>published
>>>>>a couple of hours ago (see my earlier post).
>>>>>
>>>>>73,
>>>>>Nico PA0DLO
>>>>>
>>>>>On 26-05-18 17:44, charlie@??????????????.???????????.??.?? wrote:
>>>>>>Michael
>>>>>>
>>>>>>I think that there are three main components to the Doppler shift
>>>>>>for a satellite orbiting the moon.
>>>>>>
>>>>>>1. Earth rotation moving the observer toward the moon at moonrise
>>>>>>(+ve
>>>>>>Doppler) and moonset (-ve).
>>>>>>
>>>>>>2. Earth-moon distance variation (smaller than 1, and very slowly
>>>>>>changing in comparison).
>>>>>>
>>>>>>3. Orbital velocity of the satellite itself.
>>>>>>
>>>>>>1 and 2 are easy to work out using EME software, eg WSJT-X or
>>>>>>Moonsked. I can't help with 3.
>>>>>>
>>>>>>Taking today as an example, total of 1 and 2 for the moon vary
>>>>>>from
>>>>>>~
>>>>>>+3
>>>>>>to -4.5kHz at S-Band.
>>>>>>
>>>>>>With DSN satellites many of us use(d) JPL Horizons to calculate
>>>>>>Doppler shift for Deep Space missions. Observing the Doppler
>>>>>>shift
>>>>>>change when probes were captured by the target planet was quite
>>>>>>interesting (a slowly changing shift to a cyclic one).
>>>>>>
>>>>>>73
>>>>>>
>>>>>>Charlie G3WDG
>>>>>>
>>>>>> > I find that an interesting question. One would think that since
>>>>>> > the
>>>>>>moon
>>>>>>>orbits the earth at a much much slower rate than a satellite that
>>>>>>>there would be almost no Doppler correction required. If you
>>>>>>>compensate for the speed of the orbit around the moon that is
>>>>>>>also
>>>>>>>at a much lower speed than a Earth satellite would be traveling
>>>>>>>at.
>>>>>>>Earth satellites are in the 17,000 mph range and moon satellites
>>>>>>>are in the 2000 mile an hour range orbiting speed. Also the
>>>>>>>chance
>>>>>>>that the satellite orbiting the moon could be at such an axis
>>>>>>>where
>>>>>>>it is in full visibility the earth the whole time, at that point
>>>>>>>there would not be a Doppler correction based upon satellite
>>>>>>>velocity only the moon's velocity. Will be interesting to hear
>>>>>>>the
>>>>>>>experts chime in on this.
>>>>>>>
>>>>>>>Michael Vivona
>>>>>>>Sent from my iPad
>>>>>>>
>>>>>>>On May 25, 2018, at 5:49 PM, Stefan Wagener <wageners@?????.???>
>>>>>>>wrote:
>>>>>>>
>>>>>>>The problem will not be the pointing (you could just point to the
>>>>>>>moon :-) Pending distance, speed and orbit around the moon and
>>>>>>>position to earth, you might have a difficult time adjusting for
>>>>>>>doppler. I let more knowledgable folks chip in on this one.
>>>>>>>
>>>>>>>Stefan, VE4NSA
>>>>>>>
>>>>>>>>On Fri, May 25, 2018 at 2:40 PM Jordan Trewitt
>>>>>>>><jmtrewitt@?????.???>
>>>>>>>>wrote:
>>>>>>>>
>>>>>>>>If it was the 70 cm downlink, you might be able to schedule
>>>>>>>>something with someone else's SATNOGS station (idk how that'd
>>>>>>>>work
>>>>>>>>with getting a rotator to work though), if they have a large
>>>>>>>>enough yagi that is.
>>>>>>>>-Jordan
>>>>>>>>KF5COQ
>>>>>>>>
>>>>>>>>>On Fri, May 25, 2018, 12:46 PM Zach Metzinger
>>>>>>>>><zmetzing@?????.???>
>>>>>>>>>wrote:
>>>>>>>>>
>>>>>>>>>>On 05/25/18 11:25, Nico Janssen wrote:
>>>>>>>>>>
>>>>>>>>>>It is confirmed from China that LongJiang 2 has performed a
>>>>>>>>>>successful braking maneuver, so that it is now in lunar orbit.
>>>>>>>>>>No further details yet.
>>>>>>>>>Nico,
>>>>>>>>>
>>>>>>>>>Do you know of any WebSDRs which are pointed and tuned to the
>>>>>>>>>downlink signals?
>>>>>>>>>
>>>>>>>>>73,
>>>>>>>>>
>>>>>>>>>--- Zach
>>>>>>>>>N0ZGO
>>>>
>>>>_______________________________________________
>>>>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: 2
Date: Wed, 30 May 2018 10:07:13 -0500
From: Steve Saner <steve@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Emails from AMSAT Website
Message-ID: <1933e0f2-f630-c419-91c0-ee8cd3c5b97b@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
On 05/30/2018 05:28 AM, John wrote:
> To further add to this point, many of us do not have time to constantly
> refresh and browse a web forum, whereas an e-mail list effectively pushes
> each update to you one at a time, allowing a much easier use format.
>
> I stopped using forums years ago, but still read e-mail reflectors as they
> come in with all my other e-mail in one useful place.
Yes, I agree. I do not see the appeal of forums at all. That said, there
are some forum packages, Discourse being one that I am familiar with,
that you can choose to work with in "Email Mode" such that any message
posted to the forum will come to you in email, and if the system is set
up to do it, you can reply to a post via email, and even start a new
thread via email.
In other words, it can be a forum for those that like forums, and it can
pretty much be an email list for those that like that. I'm on a couple
groups that use Discourse and the email interface seems to work pretty well.
I would much prefer just sticking with mailman, myself, but if it has to
change, there are ways of implementing a forum that don't totally suck.
Steve
--
--------------------------------------------------------------------------
Steven Saner <steve@?????.???> KD0IJP
Andover, Kansas USA
------------------------------
Message: 3
Date: Wed, 30 May 2018 17:46:13 +0200
From: "Mike Rupprecht" <mail@??????????????.??>
To: "'Dimitry Borzenko'" <dibor@?????.???>, "'AMSAT BB'"
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] LongJiang and Doppler correction
Message-ID: <007d01d3f82d$5769e1d0$063da570$@??>
Content-Type: text/plain; charset="utf-8"
Hi Dimitry,
of course - you need the full path + filename ...
Wei, BG2BHC is updating the files regularly. If you take a look into such a
tracking file you see seven columns in each line. The first column contains
the date and time in Unix timestamp format. The next 3 columns contain the
position in ECEF coordinates followed by 3 columns which contain the
velocity in ECEF coordinates. Based on the filename you can see how long
this file can be used.
You will get this error message (File is not find or EOF .....) if no valid
information is found that match to the current time.
73 Mike
-----Urspr?ngliche Nachricht-----
Von: Dimitry Borzenko [mailto:dibor@?????.????
Gesendet: 30 May 2018 17:10
An: Mike Rupprecht; 'AMSAT BB'
Betreff: Re: AW: AW: [amsat-bb] LongJiang and Doppler correction
Hi Mike.
Understood.
Program Tracking CC block request exact file, path is not enough.
I should to change every day/ two days Program Tracking CC setting for each
demodulator?
Or I do not understand something?
Regards.
------ Original Message ------
From: "Mike Rupprecht" <mail@??????????????.??>
To: "'Dimitry Borzenko'" <dibor@?????.???>; "'AMSAT BB'"
<amsat-bb@?????.???>
Sent: 30.05.2018 17:23:48
Subject: AW: AW: [amsat-bb] LongJiang and Doppler correction
>Dimitry,
>
>the default directory is /home/lilac/lilacsat/gr-dslwp/examples/
>Edit the correct path in the Program Tracking CC block.
>
>73 Mike
>DK3WN
>
>-----Urspr?ngliche Nachricht-----
>Von: Dimitry Borzenko [mailto:dibor@?????.????
>Gesendet: 30 May 2018 14:58
>An: Mike Rupprecht; 'AMSAT BB'
>Betreff: Re: AW: [amsat-bb] LongJiang and Doppler correction
>
>Hello Mike.
>I saw new files but I do not know where I should to put this file
>(which folder?).
>
>Regards.
>
>
>------ Original Message ------
>From: "Mike Rupprecht" <mail@??????????????.??>
>To: "'Dimitry Borzenko'" <dibor@?????.???>; "'AMSAT BB'"
><amsat-bb@?????.???>
>Sent: 30.05.2018 14:56:51
>Subject: AW: [amsat-bb] LongJiang and Doppler correction
>
>>Hi Dimitry,
>>
>>TLE are useles in lunar orbit.
>>
>>You have to update the tracking file in all four decoders.
>>
>>https://github.com/bg2bhc/dslwp_doc/blob/master/program_tracking_dslwp
>>-
>>b_201
>>80529.txt
>>
>>(or later files)
>>
>>73 Mike
>>DK3WN
>>
>>-----Urspr?ngliche Nachricht-----
>>Von: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? Im Auftrag von
>>Dimitry Borzenko
>>Gesendet: 30 May 2018 10:36
>>An: AMSAT BB
>>Betreff: Re: [amsat-bb] LongJiang and Doppler correction
>>
>>Hello.
>>Have problem with running Live CD.
>>Have made USB bootable diskONkey , system is runs.
>>Mun Downlink Proxy is configured and Orbit TLE can be downloaded, but
>>ALL ports is NOT connected!
>>RTL is running and freq. calibrated.
>>Also while running Decoder got 4 terminals running and have some
>>message about "File is not find or EOF ....."
>>
>>What I did wrong?
>>
>>de 4z5cp.
>>
>>
>>------ Original Message ------
>>From: "Scott" <scott23192@?????.???>
>>To: "AMSAT BB" <amsat-bb@?????.???>
>>Sent: 30.05.2018 2:30:33
>>Subject: Re: [amsat-bb] LongJiang and Doppler correction
>>
>>>Hi Jean Marc.
>>>
>>>I have tried to follow the news of these lunar satellites. While
>>>several of the guys with DSN capability have received the S-Band
>>>downlinks, I'm not aware of anyone hearing anything on 70cm past the
>>>first day as the sats left Earth.
>>>
>>>In fact, even though I am listening every night for the 70cm
>>>telemetry (using the team's GNU Radio flowgraphs), I have not heard
>>>any confirmation that the 70cm transmitter is even on (telemetry -or-
>>>JT4).
>>>
>>>-Scott, K4KDR
>>>
>>>
>>>=======================================================
>>>
>>>-----Original Message----- From: Jean Marc Momple
>>>Sent: Tuesday, May 29, 2018 12:37 PM
>>>To: AMSAT BB
>>>Subject: Re: [amsat-bb] LongJiang and Doppler correction
>>>
>>>Dear All,
>>>
>>>May be a stupid question for the experts, but genuine from me.
>>>
>>>Has anyone received any FT4G beacon signal from the Longiang Sats so
>>>far?
>>>
>>>I have being trying to do so for the past week without success.
>>>
>>>73
>>>
>>>
>>>Jean Marc (3B8DU)
>>>
>>>
>>>
>>>
>>>>On May 26, 2018, at 8:54 PM, Nico Janssen <hamsat@??????.??> wrote:
>>>>
>>>>
>>>>In the coming days the doppler shift on the 70 cm downlink of
>>>>LongJiang 2 will vary between +2000 and -2200 Hz (for my QTH).
>>>>This can easily be calculated with GMAT using the script I published
>>>>a couple of hours ago (see my earlier post).
>>>>
>>>>73,
>>>>Nico PA0DLO
>>>>
>>>>On 26-05-18 17:44, charlie@??????????????.???????????.??.?? wrote:
>>>>>Michael
>>>>>
>>>>>I think that there are three main components to the Doppler shift
>>>>>for a satellite orbiting the moon.
>>>>>
>>>>>1. Earth rotation moving the observer toward the moon at moonrise
>>>>>(+ve
>>>>>Doppler) and moonset (-ve).
>>>>>
>>>>>2. Earth-moon distance variation (smaller than 1, and very slowly
>>>>>changing in comparison).
>>>>>
>>>>>3. Orbital velocity of the satellite itself.
>>>>>
>>>>>1 and 2 are easy to work out using EME software, eg WSJT-X or
>>>>>Moonsked. I can't help with 3.
>>>>>
>>>>>Taking today as an example, total of 1 and 2 for the moon vary from
>>>>>~
>>>>>+3
>>>>>to -4.5kHz at S-Band.
>>>>>
>>>>>With DSN satellites many of us use(d) JPL Horizons to calculate
>>>>>Doppler shift for Deep Space missions. Observing the Doppler shift
>>>>>change when probes were captured by the target planet was quite
>>>>>interesting (a slowly changing shift to a cyclic one).
>>>>>
>>>>>73
>>>>>
>>>>>Charlie G3WDG
>>>>>
>>>>> > I find that an interesting question. One would think that since
>>>>> > the
>>>>>moon
>>>>>>orbits the earth at a much much slower rate than a satellite that
>>>>>>there would be almost no Doppler correction required. If you
>>>>>>compensate for the speed of the orbit around the moon that is also
>>>>>>at a much lower speed than a Earth satellite would be traveling
>>>>>>at.
>>>>>>Earth satellites are in the 17,000 mph range and moon satellites
>>>>>>are in the 2000 mile an hour range orbiting speed. Also the chance
>>>>>>that the satellite orbiting the moon could be at such an axis
>>>>>>where it is in full visibility the earth the whole time, at that
>>>>>>point there would not be a Doppler correction based upon satellite
>>>>>>velocity only the moon's velocity. Will be interesting to hear the
>>>>>>experts chime in on this.
>>>>>>
>>>>>>Michael Vivona
>>>>>>Sent from my iPad
>>>>>>
>>>>>>On May 25, 2018, at 5:49 PM, Stefan Wagener <wageners@?????.???>
>>>>>>wrote:
>>>>>>
>>>>>>The problem will not be the pointing (you could just point to the
>>>>>>moon :-) Pending distance, speed and orbit around the moon and
>>>>>>position to earth, you might have a difficult time adjusting for
>>>>>>doppler. I let more knowledgable folks chip in on this one.
>>>>>>
>>>>>>Stefan, VE4NSA
>>>>>>
>>>>>>>On Fri, May 25, 2018 at 2:40 PM Jordan Trewitt
>>>>>>><jmtrewitt@?????.???>
>>>>>>>wrote:
>>>>>>>
>>>>>>>If it was the 70 cm downlink, you might be able to schedule
>>>>>>>something with someone else's SATNOGS station (idk how that'd
>>>>>>>work with getting a rotator to work though), if they have a large
>>>>>>>enough yagi that is.
>>>>>>>-Jordan
>>>>>>>KF5COQ
>>>>>>>
>>>>>>>>On Fri, May 25, 2018, 12:46 PM Zach Metzinger
>>>>>>>><zmetzing@?????.???>
>>>>>>>>wrote:
>>>>>>>>
>>>>>>>>>On 05/25/18 11:25, Nico Janssen wrote:
>>>>>>>>>
>>>>>>>>>It is confirmed from China that LongJiang 2 has performed a
>>>>>>>>>successful braking maneuver, so that it is now in lunar orbit.
>>>>>>>>>No further details yet.
>>>>>>>>Nico,
>>>>>>>>
>>>>>>>>Do you know of any WebSDRs which are pointed and tuned to the
>>>>>>>>downlink signals?
>>>>>>>>
>>>>>>>>73,
>>>>>>>>
>>>>>>>>--- Zach
>>>>>>>>N0ZGO
>>>
>>>_______________________________________________
>>>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: 4
Date: Wed, 30 May 2018 16:04:02 +0000
From: "Dimitry Borzenko" <dibor@?????.???>
To: "Mike Rupprecht" <mail@??????????????.??>, "'AMSAT BB'"
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] LongJiang and Doppler correction
Message-ID: <em46060181-c556-4637-90ff-8b54e5503a0e@?????>
Content-Type: text/plain; format=flowed; charset=utf-8
Hi Mike.
I have pointing Program Tracking CC of all decoders to the
program_tracking_dslwp-b.txt file
For me is more simple to change new downloaded file to
"program_tracking_dslwp-b.txt" and overwrite existed then change path in
the Program Tracking CC block of 2 or 4 decoders.
Thank you for the help!
------ Original Message ------
From: "Mike Rupprecht" <mail@??????????????.??>
To: "'Dimitry Borzenko'" <dibor@?????.???>; "'AMSAT BB'"
<amsat-bb@?????.???>
Sent: 30.05.2018 18:46:13
Subject: AW: AW: AW: [amsat-bb] LongJiang and Doppler correction
>Hi Dimitry,
>
>of course - you need the full path + filename ...
>
>Wei, BG2BHC is updating the files regularly. If you take a look into
>such a tracking file you see seven columns in each line. The first
>column contains the date and time in Unix timestamp format. The next 3
>columns contain the position in ECEF coordinates followed by 3 columns
>which contain the velocity in ECEF coordinates. Based on the filename
>you can see how long this file can be used.
>
>You will get this error message (File is not find or EOF .....) if no
>valid information is found that match to the current time.
>
>73 Mike
>
>
>-----Urspr?ngliche Nachricht-----
>Von: Dimitry Borzenko [mailto:dibor@?????.????
>Gesendet: 30 May 2018 17:10
>An: Mike Rupprecht; 'AMSAT BB'
>Betreff: Re: AW: AW: [amsat-bb] LongJiang and Doppler correction
>
>Hi Mike.
>Understood.
>Program Tracking CC block request exact file, path is not enough.
>I should to change every day/ two days Program Tracking CC setting for
>each demodulator?
>Or I do not understand something?
>
>Regards.
>
>------ Original Message ------
>From: "Mike Rupprecht" <mail@??????????????.??>
>To: "'Dimitry Borzenko'" <dibor@?????.???>; "'AMSAT BB'"
><amsat-bb@?????.???>
>Sent: 30.05.2018 17:23:48
>Subject: AW: AW: [amsat-bb] LongJiang and Doppler correction
>
>>Dimitry,
>>
>>the default directory is /home/lilac/lilacsat/gr-dslwp/examples/
>>Edit the correct path in the Program Tracking CC block.
>>
>>73 Mike
>>DK3WN
>>
>>-----Urspr?ngliche Nachricht-----
>>Von: Dimitry Borzenko [mailto:dibor@?????.????
>>Gesendet: 30 May 2018 14:58
>>An: Mike Rupprecht; 'AMSAT BB'
>>Betreff: Re: AW: [amsat-bb] LongJiang and Doppler correction
>>
>>Hello Mike.
>>I saw new files but I do not know where I should to put this file
>>(which folder?).
>>
>>Regards.
>>
>>
>>------ Original Message ------
>>From: "Mike Rupprecht" <mail@??????????????.??>
>>To: "'Dimitry Borzenko'" <dibor@?????.???>; "'AMSAT BB'"
>><amsat-bb@?????.???>
>>Sent: 30.05.2018 14:56:51
>>Subject: AW: [amsat-bb] LongJiang and Doppler correction
>>
>>>Hi Dimitry,
>>>
>>>TLE are useles in lunar orbit.
>>>
>>>You have to update the tracking file in all four decoders.
>>>
>>>https://github.com/bg2bhc/dslwp_doc/blob/master/program_tracking_dslwp
>>>-
>>>b_201
>>>80529.txt
>>>
>>>(or later files)
>>>
>>>73 Mike
>>>DK3WN
>>>
>>>-----Urspr?ngliche Nachricht-----
>>>Von: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? Im Auftrag von
>>>Dimitry Borzenko
>>>Gesendet: 30 May 2018 10:36
>>>An: AMSAT BB
>>>Betreff: Re: [amsat-bb] LongJiang and Doppler correction
>>>
>>>Hello.
>>>Have problem with running Live CD.
>>>Have made USB bootable diskONkey , system is runs.
>>>Mun Downlink Proxy is configured and Orbit TLE can be downloaded, but
>>>ALL ports is NOT connected!
>>>RTL is running and freq. calibrated.
>>>Also while running Decoder got 4 terminals running and have some
>>>message about "File is not find or EOF ....."
>>>
>>>What I did wrong?
>>>
>>>de 4z5cp.
>>>
>>>
>>>------ Original Message ------
>>>From: "Scott" <scott23192@?????.???>
>>>To: "AMSAT BB" <amsat-bb@?????.???>
>>>Sent: 30.05.2018 2:30:33
>>>Subject: Re: [amsat-bb] LongJiang and Doppler correction
>>>
>>>>Hi Jean Marc.
>>>>
>>>>I have tried to follow the news of these lunar satellites. While
>>>>several of the guys with DSN capability have received the S-Band
>>>>downlinks, I'm not aware of anyone hearing anything on 70cm past the
>>>>first day as the sats left Earth.
>>>>
>>>>In fact, even though I am listening every night for the 70cm
>>>>telemetry (using the team's GNU Radio flowgraphs), I have not heard
>>>>any confirmation that the 70cm transmitter is even on (telemetry
>>>>-or-
>>>>JT4).
>>>>
>>>>-Scott, K4KDR
>>>>
>>>>
>>>>=======================================================
>>>>
>>>>-----Original Message----- From: Jean Marc Momple
>>>>Sent: Tuesday, May 29, 2018 12:37 PM
>>>>To: AMSAT BB
>>>>Subject: Re: [amsat-bb] LongJiang and Doppler correction
>>>>
>>>>Dear All,
>>>>
>>>>May be a stupid question for the experts, but genuine from me.
>>>>
>>>>Has anyone received any FT4G beacon signal from the Longiang Sats so
>>>>far?
>>>>
>>>>I have being trying to do so for the past week without success.
>>>>
>>>>73
>>>>
>>>>
>>>>Jean Marc (3B8DU)
>>>>
>>>>
>>>>
>>>>
>>>>>On May 26, 2018, at 8:54 PM, Nico Janssen <hamsat@??????.??> wrote:
>>>>>
>>>>>
>>>>>In the coming days the doppler shift on the 70 cm downlink of
>>>>>LongJiang 2 will vary between +2000 and -2200 Hz (for my QTH).
>>>>>This can easily be calculated with GMAT using the script I
>>>>>published
>>>>>a couple of hours ago (see my earlier post).
>>>>>
>>>>>73,
>>>>>Nico PA0DLO
>>>>>
>>>>>On 26-05-18 17:44, charlie@??????????????.???????????.??.?? wrote:
>>>>>>Michael
>>>>>>
>>>>>>I think that there are three main components to the Doppler shift
>>>>>>for a satellite orbiting the moon.
>>>>>>
>>>>>>1. Earth rotation moving the observer toward the moon at moonrise
>>>>>>(+ve
>>>>>>Doppler) and moonset (-ve).
>>>>>>
>>>>>>2. Earth-moon distance variation (smaller than 1, and very slowly
>>>>>>changing in comparison).
>>>>>>
>>>>>>3. Orbital velocity of the satellite itself.
>>>>>>
>>>>>>1 and 2 are easy to work out using EME software, eg WSJT-X or
>>>>>>Moonsked. I can't help with 3.
>>>>>>
>>>>>>Taking today as an example, total of 1 and 2 for the moon vary
>>>>>>from
>>>>>>~
>>>>>>+3
>>>>>>to -4.5kHz at S-Band.
>>>>>>
>>>>>>With DSN satellites many of us use(d) JPL Horizons to calculate
>>>>>>Doppler shift for Deep Space missions. Observing the Doppler
>>>>>>shift
>>>>>>change when probes were captured by the target planet was quite
>>>>>>interesting (a slowly changing shift to a cyclic one).
>>>>>>
>>>>>>73
>>>>>>
>>>>>>Charlie G3WDG
>>>>>>
>>>>>> > I find that an interesting question. One would think that since
>>>>>> > the
>>>>>>moon
>>>>>>>orbits the earth at a much much slower rate than a satellite that
>>>>>>>there would be almost no Doppler correction required. If you
>>>>>>>compensate for the speed of the orbit around the moon that is
>>>>>>>also
>>>>>>>at a much lower speed than a Earth satellite would be traveling
>>>>>>>at.
>>>>>>>Earth satellites are in the 17,000 mph range and moon satellites
>>>>>>>are in the 2000 mile an hour range orbiting speed. Also the
>>>>>>>chance
>>>>>>>that the satellite orbiting the moon could be at such an axis
>>>>>>>where it is in full visibility the earth the whole time, at that
>>>>>>>point there would not be a Doppler correction based upon
>>>>>>>satellite
>>>>>>>velocity only the moon's velocity. Will be interesting to hear
>>>>>>>the
>>>>>>>experts chime in on this.
>>>>>>>
>>>>>>>Michael Vivona
>>>>>>>Sent from my iPad
>>>>>>>
>>>>>>>On May 25, 2018, at 5:49 PM, Stefan Wagener <wageners@?????.???>
>>>>>>>wrote:
>>>>>>>
>>>>>>>The problem will not be the pointing (you could just point to the
>>>>>>>moon :-) Pending distance, speed and orbit around the moon and
>>>>>>>position to earth, you might have a difficult time adjusting for
>>>>>>>doppler. I let more knowledgable folks chip in on this one.
>>>>>>>
>>>>>>>Stefan, VE4NSA
>>>>>>>
>>>>>>>>On Fri, May 25, 2018 at 2:40 PM Jordan Trewitt
>>>>>>>><jmtrewitt@?????.???>
>>>>>>>>wrote:
>>>>>>>>
>>>>>>>>If it was the 70 cm downlink, you might be able to schedule
>>>>>>>>something with someone else's SATNOGS station (idk how that'd
>>>>>>>>work with getting a rotator to work though), if they have a
>>>>>>>>large
>>>>>>>>enough yagi that is.
>>>>>>>>-Jordan
>>>>>>>>KF5COQ
>>>>>>>>
>>>>>>>>>On Fri, May 25, 2018, 12:46 PM Zach Metzinger
>>>>>>>>><zmetzing@?????.???>
>>>>>>>>>wrote:
>>>>>>>>>
>>>>>>>>>>On 05/25/18 11:25, Nico Janssen wrote:
>>>>>>>>>>
>>>>>>>>>>It is confirmed from China that LongJiang 2 has performed a
>>>>>>>>>>successful braking maneuver, so that it is now in lunar orbit.
>>>>>>>>>>No further details yet.
>>>>>>>>>Nico,
>>>>>>>>>
>>>>>>>>>Do you know of any WebSDRs which are pointed and tuned to the
>>>>>>>>>downlink signals?
>>>>>>>>>
>>>>>>>>>73,
>>>>>>>>>
>>>>>>>>>--- Zach
>>>>>>>>>N0ZGO
>>>>
>>>>_______________________________________________
>>>>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: 5
Date: Wed, 30 May 2018 18:06:09 +0200
From: Erich Eichmann <erich.eichmann@????????.??>
To: APBIDDLE@???????.???? AMSAT-BB@?????.???
Subject: Re: [amsat-bb] Help with SatPC32 Labjack Yaesu 5500 rotator
control
Message-ID: <5B0ECBF1.3000403@????????.??>
Content-Type: text/plain; charset=windows-1252; format=flowed
Hello Alan, Nick and others,
I didn't make any changes with ServerLabjack. The file is unchanged
since Dec. 12. 2012. SatPC32 itself only outputs the target positions
to ServerLabjack. Only this file then checks whether the rotors have
reached the target positions.
Is there any correlation between updating the target positions by
SatPC32 and stalling of the rotor?
I also use Windows 7, 64-bit and the Labjack U-12 with a KR-5600.
Lately I used it for multiple satellite passes and I just tested full
360? turns of the az. rotor/ 90? turns of the el. rotor in both
direction (entered target postions in menu "Rotor"). No issues so far.
73s, Erich, DK1TB
Am 30.05.2018 um 16:18 schrieb Alan:
> Same here, beginning a week or so back. Investigating, but so far nothing
> determined. Using WIN7 64-bit, and wondering if there was something in the
> recent updates.
>
> 73,
>
> Alan
> WA4SCA
>
>
> <-----Original Message-----
> <From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of Nick
> <Pugh
> <Sent: Wednesday, May 30, 2018 08:54 AM
> <To: 'Amsat BB' <AMSAT-BB@?????.???>
> <Subject: [amsat-bb] help with yaesu 5500 rotator
> <
> <Hello Amsat-ers
> <
> <
> <
> <I am using an Yaesu 5500 rotator controlled by a Lab jack under Satpc32
> <v8.1. Intermittently the rotator stall under computer control. The LED on
> <the lab jack indicate a signal to control the rotator to move but no
> <movement. Terminating Satpc32 the rotator works normal. Suggestions??
> <
> <
> <
> <
> <
> <
> <
> <Nick k6qxj
> <
> <_______________________________________________
> <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: 6
Date: Wed, 30 May 2018 11:43:42 -0500
From: "Alan" <wa4sca@?????.???>
To: "'Erich Eichmann'" <erich.eichmann@????????.??>,
<APBIDDLE@???????.???>, <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Help with SatPC32 Labjack Yaesu 5500 rotator
control
Message-ID: <000001d3f835$5edc7e20$1c957a60$@?????.???>
Content-Type: text/plain; charset="iso-8859-1"
Erich,
So far the stalls have occurred in the middle of the night. One was showing
the elevation at 4 degrees, with the target at 0. The Labjack server was
indicating a down command. I closed and restarted SatPC32 and when I
selected Park, it dropped to 0 and the desired azimuth. The second time was
an azimuth problem, with a large difference between the commanded and actual
position. The Labjack server was indicating a turn. Closing and restarting
cleared the problem.
There are two changes that I know of. I recently changed the rotor position
change window from 3 degrees to 10 degree to reduce wear, as that is close
enough for LEOs. I have reset that to 3 degrees to remove the variable.
Mark, G0MGX suggested that I look at KB4103718, which has been reported to
be causing some USB issues. I have removed it, and will see what happens.
If it happens again, I will get more details. It certainly looks like
something in the OS rather than SatPC32.
73,
Alan
WA4SCA
<-----Original Message-----
<From: Erich Eichmann [mailto:erich.eichmann@????????.???
<Sent: Wednesday, May 30, 2018 11:06 AM
<To: APBIDDLE@???????.???? AMSAT-BB@?????.???
<Subject: Re: [amsat-bb] Help with SatPC32 Labjack Yaesu 5500 rotator
control
<
<Hello Alan, Nick and others,
<I didn't make any changes with ServerLabjack. The file is unchanged
<since Dec. 12. 2012. SatPC32 itself only outputs the target positions
<to ServerLabjack. Only this file then checks whether the rotors have
<reached the target positions.
<Is there any correlation between updating the target positions by
<SatPC32 and stalling of the rotor?
<
<I also use Windows 7, 64-bit and the Labjack U-12 with a KR-5600.
<Lately I used it for multiple satellite passes and I just tested full
<360? turns of the az. rotor/ 90? turns of the el. rotor in both
<direction (entered target postions in menu "Rotor"). No issues so far.
<73s, Erich, DK1TB
<
<Am 30.05.2018 um 16:18 schrieb Alan:
<> Same here, beginning a week or so back. Investigating, but so far
nothing
<> determined. Using WIN7 64-bit, and wondering if there was something in
<the
<> recent updates.
<>
<> 73,
<>
<> Alan
<> WA4SCA
<>
<>
<> <-----Original Message-----
<> <From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of
<Nick
<> <Pugh
<> <Sent: Wednesday, May 30, 2018 08:54 AM
<> <To: 'Amsat BB' <AMSAT-BB@?????.???>
<> <Subject: [amsat-bb] help with yaesu 5500 rotator
<> <
<> <Hello Amsat-ers
<> <
<> <
<> <
<> <I am using an Yaesu 5500 rotator controlled by a Lab jack under Satpc32
<> <v8.1. Intermittently the rotator stall under computer control. The LED
on
<> <the lab jack indicate a signal to control the rotator to move but no
<> <movement. Terminating Satpc32 the rotator works normal. Suggestions??
<> <
<> <
<> <
<> <
<> <
<> <
<> <
<> <Nick k6qxj
<> <
<> <_______________________________________________
<> <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: Wed, 30 May 2018 19:33:44 +0000 (UTC)
From: M5AKA <m5aka@?????.??.??>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] Satellites in TX Factor Show + Bulgaria CubeSat
Message-ID: <1029192493.12230000.1527708824504@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Amateur radio satellites in TX Factor Show episode 21
https://amsat-uk.org/2018/05/30/satellites-tx-factor-21/
Bulgarian CubeSat EnduroSat on ISS awaiting deployment
https://amsat-uk.org/2018/05/30/bulgaria-endurosat/
IARU R1 highlights threat to higher ham radio bands
https://amsat-uk.org/2018/05/28/iaru-r1-highlights-threat-to-higher-ham-radio-
bands/
Trevor M5AKA
----
AMSAT-UK?http://amsat-uk.org/
Twitter?https://twitter.com/AmsatUK
Facebook?https://facebook.com/AmsatUK
YouTube?https://youtube.com/AmsatUK
----
------------------------------
Message: 8
Date: Wed, 30 May 2018 19:01:31 -0400
From: <n4csitwo@?????????.???>
To: "Bill Merino" <n2cop@??.??.???>, <amsat-bb@?????.???>, "amsat-edu"
<amsat-edu@?????.???>, <ariss-press@?????.???>
Subject: [amsat-bb] Upcoming ARISS contact with Sterrenschool De
Globetrotter, Rotterdam, The Netherlands
Message-ID: <2E6E8B6631BF4E38BF10FFD33D678FF9@???>
Content-Type: text/plain; charset="iso-8859-1"
An International Space Station school contact has been planned with
participants at Sterrenschool De Globetrotter, Rotterdam, The Netherlands on
31 May. The event is scheduled to begin at approximately 16:58 UTC. It is
recommended that you start listening approximately 10 minutes before this
time.The duration of the contact is approximately 9 minutes and 30 seconds.
The contact will be a telebridge between NA1SS and VK4KHZ. The contact
should be audible over Australia and adjacent areas. Interested parties are
invited to listen in on the 145.80 MHz downlink. The contact is expected to
be conducted in English.
Sterrenschool De Globetrotter, Rotterdam
Sterrenschool De Globetrotter is a primary school in Rotterdam located in
the inner city neighborhood Afrikaanderwijk (Feijenoord). The
Afrikaanderwijk was one of the first areas with an international background,
primarily consisting families of Turkish, Moroccan, Surinamese and Antillean
descent.
Globetrotter focused this school year on a project group of students from
all grades with a need for extra challenges and assignments. The theme this
year has been space exploration. Two teachers have been carrying out and
will carry out the project in weekly lessons in order to provide in depth
knowledge of the galaxy, space exploration and radio communication. During
the rest of the week the students has been and will work on these
assignments after their regular schoolwork. Central to this approach is that
the students extend their work based on their own interests and share their
work with the other students, teachers and parents. The two weeks prior to
the contact with ISS, the entire school will be working on projects that
have to do with the universe and ISS.
Aloysius school, Maasland
It started with a pupil from our school who had a question about a solar
eclipse from space. This way we were involved in the ARISS project. Stefan
Nelwan took the initiative for the application. Our school loves challenges.
So, the Aloysiusschool, a small village school in rural Maasland, was chosen
to participate in a large project. Together with the Globetrotter, a city
school in the heart of Rotterdam, we had several contacts about the course
of events. We made a website with lots of information for the children and
gave lessons about morse code, but also about all kinds of themes around it,
such as technology, innovation, physics and more. In the period that Stephen
Hawking died, more input was released. In class we spoke about ISS, about
the universe, about the solar system, space debris and even about the
meaning of life. The universe is fascinating and brings us to the essence of
our lives for now but also in the future. Children can handle this
flawlessly. We built little pl
astic bottle- missiles and launched them on a soccer field. We watched
films and saw our national pioneers Wubbo Ockels and Andr? Kuipers take an
important step in our history. One question led to another and so we all
became all, step by step, a little wiser.
We decided to ask the children of three regular classes (not only the
children with a need for extra challenges and assignments) to put their
questions on a digital bulletin board. Not every student put something on
it, but eventually it filled with countless relevant and irrelevant
questions. In the end we selected a number of relevant questions. We also
looked at the fact that children experience things differently than adults.
We hope that we have laid a foundation for further exploration and that the
children will realize that we have to be careful with that piece of rock
that rotates in an immeasurable universe, that we call Earth. It is
remarkable to know that the Sun will swallow our planet in five billion
years and eventually destroy everything we've built up. Space exploration
can perhaps prevent humanity from ceasing to exist.
We were not able to realize everything we had in our minds, but we are
satisfied with the proceeds of the project and thank the people who made
this possible for us. We have experienced the cooperation with the
Globetrotter as very pleasant and meaningful.
Participants will ask as many of the following questions as time allows:
1. Is it hard to walk with gravity once you've returned to earth?
2. Is someone's blood pressure different in space?
3. What kind of work in ISS do you find easy and what difficult?
4. Can you catch diseases in space that you won't catch on earth?
5. Do you miss having pets in space? Would it be possible to have pets in
ISS?
6. How do you see a solar eclipse from the ISS?
7. Do you have difficulties with the enclosed space?
8. You are conducting a lot of experiments in ISS, are there experiments that
are secret and you can't tell anything about.
9. What inspired you to become an astronaut?
10. Can one be afraid of heights in space?
11. Is it nice to sleep in space, do you find it comfortable?
12. Is space radiation dangerous for your body and how do you prevent cell
damage?
13. Do you miss your family, what do you miss that you didn't anticipate
beforehand?
14. If you are in space, what is your greatest fear?
15. You are growing plants in ISS, do they grow well and how do you water
them when there is no gravity
16. Does your body feel the same in space as on earth or are there
differences?
17. Does one ever experience physical pain or discomfort from being in space?
18. What do you do when space-debris is heading towards ISS?
19. Do you sometimes organize joint activities such as a game 'evening'?
20. What kind of experiments are you currently doing in ISS?
PLEASE CHECK THE FOLLOWING FOR MORE INFORMATION ON ARISS UPDATES:
Visit ARISS on Facebook. We can be found at Amateur Radio on the
International Space Station (ARISS).
To receive our Twitter updates, follow @????????????
Next planned event(s):
TBD
About ARISS:
Amateur Radio on the International Space Station (ARISS) is a cooperative
venture of international amateur radio societies and the space agencies that
support the International Space Station (ISS). In the United States,
sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American
Radio Relay League (ARRL), the Center for the Advancement of Science in
Space (CASIS) and National Aeronautics and Space Administration (NASA).
The primary goal of ARISS is to promote exploration of science, technology,
engineering, and mathematics (STEM) topics by organizing scheduled contacts
via amateur radio between crew members aboard the ISS and students in
classrooms or informal education venues. With the help of experienced
amateur radio volunteers, ISS crews speak directly with large audiences in a
variety of public forums. Before and during these radio contacts, students,
teachers, parents, and communities learn about space, space technologies,
and amateur radio. For more informa
tion, see www.ariss.org, www.amsat.org, and www.arrl.org.
Thank you & 73,
David - AA4KN
---
This email has been checked for viruses by Avast antivirus software.
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------------------------------
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 183
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