Email Detail

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/35B4HSWUQJTVI5WPUS5IZTPARJQQ7T5U/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "CAHD9BgD0kD=qefPnR3fTUHmbiWv1jem2_93LgjYiNe0K3YiXNA@mail.gmail.com",
    "message_id_hash": "35B4HSWUQJTVI5WPUS5IZTPARJQQ7T5U",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/NSMXPU3DJXIAVNRNZR25UK3RFGU5YCO3/?format=api",
    "sender": {
        "address": "jmtrewitt (a) gmail.com",
        "mailman_id": "967d8763674b4978825e6fecd813ed3d",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/967d8763674b4978825e6fecd813ed3d/emails/?format=api"
    },
    "sender_name": "Jordan Trewitt",
    "subject": "Re: [amsat-bb] LongJiang and Doppler correction",
    "date": "2018-05-31T00:44:45Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/EUABI37S43ITNT3FKIEE6KVIGJ6LHT5O/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "So it sounds like they're getting ready for some more tests with this tweet\nfrom BG2BHC:\n\nDSLWP Live CD update, for the tests comming this weekend\nhttps://t.co/Tjw5Yo9VfT @AMSAT @AmsatUK @cgbassa @dk3wn @n6rfm @ndonso\n@ea4gpz @m6sig @JA5BLZ\n\n\nBest regards,\nJordan Trewitt\nKF5COQ\n\nOn Wed, May 30, 2018, 11:08 AM Dimitry Borzenko <[email protected]> wrote:\n\n> Hi Mike.\n> I have pointing Program Tracking CC of all decoders to the\n> program_tracking_dslwp-b.txt file\n> For me is more simple to change new downloaded file to\n> \"program_tracking_dslwp-b.txt\" and overwrite existed then change path in\n> the Program Tracking CC block of 2 or 4 decoders.\n>\n> Thank you for the help!\n>\n>\n> ------ Original Message ------\n> From: \"Mike Rupprecht\" <[email protected]>\n> To: \"'Dimitry Borzenko'\" <[email protected]>; \"'AMSAT BB'\"\n> <[email protected]>\n> Sent: 30.05.2018 18:46:13\n> Subject: AW: AW: AW: [amsat-bb] LongJiang and Doppler correction\n>\n> >Hi Dimitry,\n> >\n> >of course - you need the full path + filename ...\n> >\n> >Wei, BG2BHC is updating the files regularly. If you take a look into\n> >such a tracking file you see seven columns in each line. The first\n> >column contains the date and time in Unix timestamp format. The next 3\n> >columns contain the position in ECEF coordinates followed by 3 columns\n> >which contain the velocity in ECEF coordinates. Based on the filename\n> >you can see how long this file can be used.\n> >\n> >You will get this error message (File is not find or EOF .....)  if no\n> >valid information is found that match to the current time.\n> >\n> >73 Mike\n> >\n> >\n> >-----Ursprüngliche Nachricht-----\n> >Von: Dimitry Borzenko [mailto:[email protected]]\n> >Gesendet: 30 May 2018 17:10\n> >An: Mike Rupprecht; 'AMSAT BB'\n> >Betreff: Re: AW: AW: [amsat-bb] LongJiang and Doppler correction\n> >\n> >Hi Mike.\n> >Understood.\n> >Program Tracking CC block request exact file, path is not enough.\n> >I should to change every day/ two days Program Tracking CC setting for\n> >each demodulator?\n> >Or I do not understand something?\n> >\n> >Regards.\n> >\n> >------ Original Message ------\n> >From: \"Mike Rupprecht\" <[email protected]>\n> >To: \"'Dimitry Borzenko'\" <[email protected]>; \"'AMSAT BB'\"\n> ><[email protected]>\n> >Sent: 30.05.2018 17:23:48\n> >Subject: AW: AW: [amsat-bb] LongJiang and Doppler correction\n> >\n> >>Dimitry,\n> >>\n> >>the default directory is /home/lilac/lilacsat/gr-dslwp/examples/\n> >>Edit the correct path in the Program Tracking CC block.\n> >>\n> >>73 Mike\n> >>DK3WN\n> >>\n> >>-----Ursprüngliche Nachricht-----\n> >>Von: Dimitry Borzenko [mailto:[email protected]]\n> >>Gesendet: 30 May 2018 14:58\n> >>An: Mike Rupprecht; 'AMSAT BB'\n> >>Betreff: Re: AW: [amsat-bb] LongJiang and Doppler correction\n> >>\n> >>Hello Mike.\n> >>I saw new files but I do not know where I should to put this file\n> >>(which folder?).\n> >>\n> >>Regards.\n> >>\n> >>\n> >>------ Original Message ------\n> >>From: \"Mike Rupprecht\" <[email protected]>\n> >>To: \"'Dimitry Borzenko'\" <[email protected]>; \"'AMSAT BB'\"\n> >><[email protected]>\n> >>Sent: 30.05.2018 14:56:51\n> >>Subject: AW: [amsat-bb] LongJiang and Doppler correction\n> >>\n> >>>Hi Dimitry,\n> >>>\n> >>>TLE are useles in lunar orbit.\n> >>>\n> >>>You have to update the tracking file in all four decoders.\n> >>>\n> >>>https://github.com/bg2bhc/dslwp_doc/blob/master/program_tracking_dslwp\n> >>>-\n> >>>b_201\n> >>>80529.txt\n> >>>\n> >>>(or later files)\n> >>>\n> >>>73 Mike\n> >>>DK3WN\n> >>>\n> >>>-----Ursprüngliche Nachricht-----\n> >>>Von: AMSAT-BB [mailto:[email protected]] Im Auftrag von\n> >>>Dimitry Borzenko\n> >>>Gesendet: 30 May 2018 10:36\n> >>>An: AMSAT BB\n> >>>Betreff: Re: [amsat-bb] LongJiang and Doppler correction\n> >>>\n> >>>Hello.\n> >>>Have problem with running Live CD.\n> >>>Have made USB bootable diskONkey , system is runs.\n> >>>Mun Downlink Proxy is configured and Orbit TLE can be downloaded, but\n> >>>ALL ports is NOT connected!\n> >>>RTL is running and freq. calibrated.\n> >>>Also while running Decoder got 4 terminals running and have some\n> >>>message about \"File is not find or EOF .....\"\n> >>>\n> >>>What I did wrong?\n> >>>\n> >>>de 4z5cp.\n> >>>\n> >>>\n> >>>------ Original Message ------\n> >>>From: \"Scott\" <[email protected]>\n> >>>To: \"AMSAT BB\" <[email protected]>\n> >>>Sent: 30.05.2018 2:30:33\n> >>>Subject: Re: [amsat-bb] LongJiang and Doppler correction\n> >>>\n> >>>>Hi Jean Marc.\n> >>>>\n> >>>>I have tried to follow the news of these lunar satellites.  While\n> >>>>several of the guys with DSN capability have received the S-Band\n> >>>>downlinks, I'm not aware of anyone hearing anything on 70cm past the\n> >>>>first day as the sats left Earth.\n> >>>>\n> >>>>In fact, even though I am listening every night for the 70cm\n> >>>>telemetry (using the team's GNU Radio flowgraphs), I have not heard\n> >>>>any confirmation that the 70cm transmitter is even on (telemetry\n> >>>>-or-\n> >>>>JT4).\n> >>>>\n> >>>>-Scott,  K4KDR\n> >>>>\n> >>>>\n> >>>>=======================================================\n> >>>>\n> >>>>-----Original Message----- From: Jean Marc Momple\n> >>>>Sent: Tuesday, May 29, 2018 12:37 PM\n> >>>>To: AMSAT BB\n> >>>>Subject: Re: [amsat-bb] LongJiang and Doppler correction\n> >>>>\n> >>>>Dear All,\n> >>>>\n> >>>>May be a stupid question for the experts, but genuine from me.\n> >>>>\n> >>>>Has anyone received any FT4G beacon signal from the Longiang Sats so\n> >>>>far?\n> >>>>\n> >>>>I have being trying to do so for the past week without success.\n> >>>>\n> >>>>73\n> >>>>\n> >>>>\n> >>>>Jean Marc (3B8DU)\n> >>>>\n> >>>>\n> >>>>\n> >>>>\n> >>>>>On May 26, 2018, at 8:54 PM, Nico Janssen <[email protected]> wrote:\n> >>>>>\n> >>>>>\n> >>>>>In the coming days the doppler shift on the 70 cm downlink of\n> >>>>>LongJiang 2 will vary between +2000 and -2200 Hz (for my QTH).\n> >>>>>This can easily be calculated with GMAT using the script I\n> >>>>>published\n> >>>>>a couple of hours ago (see my earlier post).\n> >>>>>\n> >>>>>73,\n> >>>>>Nico PA0DLO\n> >>>>>\n> >>>>>On 26-05-18 17:44, [email protected] wrote:\n> >>>>>>Michael\n> >>>>>>\n> >>>>>>I think that there are three main components to the Doppler shift\n> >>>>>>for a satellite orbiting the moon.\n> >>>>>>\n> >>>>>>1.  Earth rotation moving the observer toward the moon at moonrise\n> >>>>>>(+ve\n> >>>>>>Doppler) and moonset (-ve).\n> >>>>>>\n> >>>>>>2.  Earth-moon distance variation (smaller than 1, and very slowly\n> >>>>>>changing in comparison).\n> >>>>>>\n> >>>>>>3.  Orbital velocity of the satellite itself.\n> >>>>>>\n> >>>>>>1 and 2 are easy to work out using EME software, eg WSJT-X or\n> >>>>>>Moonsked. I can't help with 3.\n> >>>>>>\n> >>>>>>Taking today as an example, total of 1 and 2 for the moon vary\n> >>>>>>from\n> >>>>>>~\n> >>>>>>+3\n> >>>>>>to -4.5kHz at S-Band.\n> >>>>>>\n> >>>>>>With DSN satellites many of us use(d) JPL Horizons to calculate\n> >>>>>>Doppler shift for Deep Space missions.  Observing the Doppler\n> >>>>>>shift\n> >>>>>>change when probes were captured by the target planet was quite\n> >>>>>>interesting (a slowly changing shift to a cyclic one).\n> >>>>>>\n> >>>>>>73\n> >>>>>>\n> >>>>>>Charlie G3WDG\n> >>>>>>\n> >>>>>> > I find that an interesting question. One would think that since\n> >>>>>> > the\n> >>>>>>moon\n> >>>>>>>orbits the earth at a much much slower rate than a satellite that\n> >>>>>>>there would be almost no Doppler correction required. If you\n> >>>>>>>compensate for the speed of the orbit around the moon that is\n> >>>>>>>also\n> >>>>>>>at a much lower speed than a Earth satellite would be traveling\n> >>>>>>>at.\n> >>>>>>>Earth satellites are in the 17,000 mph range and moon satellites\n> >>>>>>>are in the 2000 mile an hour range orbiting speed. Also the\n> >>>>>>>chance\n> >>>>>>>that the satellite orbiting the moon could be at such an axis\n> >>>>>>>where it is in full visibility the earth the whole time, at that\n> >>>>>>>point there would not be a Doppler correction based upon\n> >>>>>>>satellite\n> >>>>>>>velocity only the moon's velocity. Will be interesting to hear\n> >>>>>>>the\n> >>>>>>>experts chime in on this.\n> >>>>>>>\n> >>>>>>>Michael Vivona\n> >>>>>>>Sent from my iPad\n> >>>>>>>\n> >>>>>>>On May 25, 2018, at 5:49 PM, Stefan Wagener <[email protected]>\n> >>>>>>>wrote:\n> >>>>>>>\n> >>>>>>>The problem will not be the pointing (you could just point to the\n> >>>>>>>moon :-) Pending distance, speed and orbit around the moon and\n> >>>>>>>position to earth, you might have a difficult time adjusting for\n> >>>>>>>doppler. I let more knowledgable folks chip in on this one.\n> >>>>>>>\n> >>>>>>>Stefan, VE4NSA\n> >>>>>>>\n> >>>>>>>>On Fri, May 25, 2018 at 2:40 PM Jordan Trewitt\n> >>>>>>>><[email protected]>\n> >>>>>>>>wrote:\n> >>>>>>>>\n> >>>>>>>>If it was the 70 cm downlink, you might be able to schedule\n> >>>>>>>>something with someone else's SATNOGS station (idk how that'd\n> >>>>>>>>work with getting a rotator to work though), if they have a\n> >>>>>>>>large\n> >>>>>>>>enough yagi that is.\n> >>>>>>>>-Jordan\n> >>>>>>>>KF5COQ\n> >>>>>>>>\n> >>>>>>>>>On Fri, May 25, 2018, 12:46 PM Zach Metzinger\n> >>>>>>>>><[email protected]>\n> >>>>>>>>>wrote:\n> >>>>>>>>>\n> >>>>>>>>>>On 05/25/18 11:25, Nico Janssen wrote:\n> >>>>>>>>>>\n> >>>>>>>>>>It is confirmed from China that LongJiang 2 has performed a\n> >>>>>>>>>>successful braking maneuver, so that it is now in lunar orbit.\n> >>>>>>>>>>No further details yet.\n> >>>>>>>>>Nico,\n> >>>>>>>>>\n> >>>>>>>>>Do you know of any WebSDRs which are pointed and tuned to the\n> >>>>>>>>>downlink signals?\n> >>>>>>>>>\n> >>>>>>>>>73,\n> >>>>>>>>>\n> >>>>>>>>>--- Zach\n> >>>>>>>>>N0ZGO\n> >>>>\n> >>>>_______________________________________________\n> >>>>Sent via [email protected]. AMSAT-NA makes this open forum\n> >>>>available\n> >>>>to all interested persons worldwide without requiring membership.\n> >>>>Opinions expressed\n> >>>>are solely those of the author, and do not reflect the official\n> >>>>views\n> >>>>of AMSAT-NA.\n> >>>>Not an AMSAT-NA member? Join now to support the amateur satellite\n> >>>>program!\n> >>>>Subscription settings:\n> >>>>http://www.amsat.org/mailman/listinfo/amsat-bb\n> >>>\n> >>>_______________________________________________\n> >>>Sent via [email protected]. AMSAT-NA makes this open forum available\n> >>>to all interested persons worldwide without requiring membership.\n> >>>Opinions expressed are solely those of the author, and do not reflect\n> >>>the official views of AMSAT-NA.\n> >>>Not an AMSAT-NA member? Join now to support the amateur satellite\n> >>>program!\n> >>>Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> >>>\n> >>\n> >\n>\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available\n> to all interested persons worldwide without requiring membership. Opinions\n> expressed\n> are solely those of the author, and do not reflect the official views of\n> AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>\n",
    "attachments": []
}