(C)SPACEFLIGHT101

The another Chinese satellites were launched 01:41 UTC, 25 Sep 2015.

Date: 25 Sep 2015, 01:41 UTC
Site: Jiuquan Space Launch Center
Vehicle: Changzheng-11 (CZ-11)

Tianwang-1A (TW-1A / SECM-1, Shankeda-2)
Tianwang-1B (TW-1B / NJUST-2)
Tianwang-1C (TW-1C / NJFA-1)

http://spaceflight101.com/chinas-new-long-march-11-rocket-roars-into-orbit-for-the-first-time/
http://www.amsatuk.me.uk/iaru/formal_detail.php?serialnum=468
http://www.chinaspaceflight.com/satellite/STU/STU-2.html

Shanghai Engineering Centre for Microsatellites (SECM)

TW-1A/C: Telemetry 435.645MHz GMSK 4800/9600 CSP TX interval 10s
TW-1B  : Telemetry 437.645MHz GMSK 4800/9600 CSP TX interval 20s


TW-1A,1B,1C heard

I could receive the signals of these Chinese satellites on 27 Sep 2015.
The signals of TW-1A or 1C in the left figure are a very powerful every
10 seconds. The signal of TW-1B in the right figure is a very delicate
and I confirmed that are sending every 20 seconds. Because those protocol
is CSP (not AX.25) of LINUX specification, we will not be able to decode
them in the usual way. Then, I used 2015-051A in NORAD as TLE.

2015-051A
1 40925U 15051A   15270.08999289 -.00000074  00000-0  00000+0 0  9992
2 40925  97.3119 305.5606 0012816 273.4021 164.9809 15.29495126   296


09:44-09:55 UTC, 27 Sep 2015, Ele 31 SE-E-N
(L)TW-1A/C  (R)TW-1B
  


TW-1B signals !

23:36-23:46 UTC, 2 Oct 2015, Ele 24 N-W-WS, 437.645MHz 4k8/9k6 GMSK CSP
The first half in the pass was sending every 20 seconds, but it was transmitting
the short continuos beeps little by little at the middle in this pass.

TW-1A/1C signals ?

XW-2(CAS-3) satellite and TW-1 satellite are confusing the satellite name itself.
Since the frequency and mode of TW-1A/1C is the same, I think not possible to
distinguish between these signals. Today (3.Oct2015) I tried to listen to the
TW-1A/1C signal from 10:07 UTC. The signal had been heard until 10:19:50 UTC.
In other words, this signal will be estimated to be TW-1C.  So, whether the
signal was not sent from TW-1A?  Or, whether it was switched as planned?

15/10/03  UTC    Az   MA   JST   El    Az    JST    Az   MA  min
TW-1A    10:07 161.8 082  10:12 66.6 062.0  10:18 352.0 112  011
TW-1B    10:07 162.1 083  10:13 68.4 066.6  10:18 351.9 113  011
TW-1C    10:09 163.2 089  10:14 69.8 112.7  10:20 351.3 118  010

         Number    Down      Mode
TW-1A    40928   435.645   4k8/9k6 GMSK
TW-1B    40927   437.645   4k8/9k6 GMSK
TW-1C    40926   435.645   4k8/9k6 GMSK

XiWang: xi wang, Wish or Hope in English
TianWang: tian wang, Emperor in English


[Reference]
Chinese satellites #1: http://www.ne.jp/asahi/hamradio/je9pel/lilacsat.htm
Chinese satellites #2: http://www.ne.jp/asahi/hamradio/je9pel/cas2cas3.htm
Chinese satellites #3: http://www.ne.jp/asahi/hamradio/je9pel/xw2_cas3.htm


[Supplement]
11:15-11:24 UTC, 28 Oct 2016, Ele 13 SW-W-WN, 435.645MHz 4800bps GMSK
HS_soundmodem set "GMSK GOMX3 4800bd"
Tianwang-1C (TW-1C / NJFA-1)

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