DSLWP-A1/A2

Chinese satellite: DSLWP-A1/A2 (A/B)


  


CZ-4C from the Xichang Space Center into lunar orbit in June 2018
DSLWP-A1/A2 (A/B), Harbin Institute of Technology, China


Just update gr-dslwp for DSLWP lunar misson.
Launch window open UTC Sunday evening, 20 May 2018.
LiveCD ready soon.


DSLWP-A1/A2 (A/B) mission
The first launch window will open at about 21:30 May 20th UTC.

DSLWP-A
1 99971U 00000    18140.91308873 -.00092210  00000-0 -24572+2 0 00008
2 99971 028.3228 205.3120 9633787 173.0988 004.2094 00.10982076000017

DSLWP-A1(A): 435.425MHz, 500 baud GMSK with 1/4 turbo code or JT4G
             436.425MHz, 250 baud GMSK with 1/2 turbo code or JT4G

DSLWP-A2(B): 435.400MHz, 500 baud GMSK with 1/4 turbo code or JT4G
             436.400MHz, 250 baud GMSK with 1/2 turbo code or JT4G

every 5 minutes by default
each transmittion about 16 seconds

TLE: http://lilacsat.hit.edu.cn/tle/dslwp.txt
Decoder (GNU Radio OOT module): http://github.com/bg2bhc/gr-dslwp
Decoder (Linux Live CD): http://1drv.ms/u/s!Av6J6WjI3UbMhHm8gwMr4Z_keqWH
DSLWP-A Telemetry Display: http://lilacsat.hit.edu.cn/dashboard/pages_en/telemetry-a.html
DSLWP-B Telemetry Display: http://lilacsat.hit.edu.cn/dashboard/pages_en/telemetry-b.html


DSLWP-A/B successfully seprated from vehicle at about 21:30 May 20th UTC.
The downlink conformed by the amateur radio stations all over the world.
But now DSLWP UHF downlink temporary OFF.


43470 18045A Queqiao
43471 18045B DSLWP-A (Longjiang-1)
43472 18045C DSLWP-B (Longjiang-2)
43473 18045D CZ-4C


Sat-A (not transmitting now) 2222.810MHz
Sat-B (tickling the helix nicely now) 2275.220MHz

DSLWP-A (Longjiang-1)  #43471  435.425/436.425/2222.810  500/250bps GMSK,JT4G
DSLWP-B (Longjiang-2)  #43472  435.400/436.400/2275.220  500/250bps GMSK,JT4G

DSLWP-B, 2275.220MHz S-band standby





[Reference]

http://twitter.com/bg2bhc
http://blog.goo.ne.jp/je1cvl/d/20180426
http://dk3wn.info/blog/satelliten/dslwp/
http://lilacsat.hit.edu.cn/wp/?page_id=676
http://amsat.org/pipermail/amsat-bb/2018-May/068067.html
http://www.sed.co.jp/contents/news-list/2018/05/0521-1.html
http://www.chinaspaceflight.com/satellite/HIT/DSLWP-A1-A2.html
http://amsat-uk.org/2018/04/03/dslwp-lunar-amateur-radio-satellites/


[DSLWP-B mission end]



DSLWP2 seems to have impacted into the far side of Moon on 31Jul2019
I, JE9PEL expressed this as "re-entered".  The mission controller
BG2BHC, Mr.Wei's Twitter has been declared the end of the mission.

http://twitter.com/bg2bhc
http://twitter.com/AJ_FI/status/1157599493346529282

Even if DSLWP2 is alive, the command to emit a radio signal will
not be transmitted. And I don't think there is any way to find
it rounding the moon.

http://pbs.twimg.com/media/EAugmKuWwAEtmrD.jpg
http://twitter.com/sinus_iridium/status/1156951114199101440
http://destevez.net/2019/07/dslwp-b-mission-end-prediction/

On July 31 a Chinese lunar microsatellite impacted on the
far side of the Moon, near Van Gent & Konstantinov craters,
2019-07-31 14:19:57 UTC.