Alan Kung BA1DU has posted launch information for the XW-2 (CAS-3) satellites on the AMSAT Bulletin Board. Launch time: UTC 23:00:00 on 2015-09-18 The satellites will separate from rocket at UTC 23:15:14 on 2015-09-18
The satellites will be launched on Beijing¡¦s new Chang Zheng 6 (CZ-6) rocket from the Taiyuan Satellite Launch Center.
It is understood the CZ-6 is carrying at least nine satellites with payloads operating in amateur bands. They include six satellites (designated XW-2A to XW-2F) with 435/145 MHz linear transponders for SSB/CW communications, and one satellite with an FM voice transponder. The frequencies to be used by the satellites are here.
XW-2A should operate in a sun-synchronous orbit at an altitude of about 450 km, with the other satellites at an altitude of about 530 km.
Predicted Two-Line Element (TLE) for tracking:XW-21 99999U 15261.96885740 .00004980 00000-0 28369-3 0 000002 99999 097.4712 269.8396 0010382 266.0521 270.6645 15.12847582000010
Further information on the XW-2 satellites is at http://amsat-uk.org/satellites/communications/camsat-xw-2/
Satellite tracking information http://amsat-uk.org/beginners/satellite-tracking/
Adding new satellites to SatPC32 and Gpredict http://amsat-uk.org/2013/11/23/adding-new-satellites-to-satpc32/
SatPC32 doppler.sqf http://www.pe0sat.vgnet.nl/2015/xw-2cas-3-launch-information/
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Alan Kung, BA1DU, provided China AMSAT's (CAMSAT) frequency and mode
information for the September 19 launch of mulitple satellites on Beijing¡¦s
new Chang Zheng 6 (CZ-6) rocket from the Taiyuan Satellite Launch Center.
Estimated early Keplerian elements for a September 19 launch are:
Launch time was planned for 23:00:00 UTC on 2015-09-18 with deployment
of the
satellites at 23:15:14 UTC. Technical difficulties postponed the launch
until
23:00:00 UTC on 2015-09-19.
The XW-2A through XW-2F satellites are using the same type of antenna.
These
are quarter wavelength deployable monopole whip antennas and made of steel
tape, including a UHF uplink antenna and a VHF downlink antenna for each
satellite.
DCBB (CAS-3G)
Downlink: 145.475 Digital Telemetry 9.6kbps, GMSK
437.950 Digital Telemetry 9.6kbps, GMSK
LilacSat-2 (CAS-3H)
CW Beacon 437.200
APRS
Uplink: 144.390 AFSK
Downlink: 144.390 AFSK
FM Transponder
Uplink: 144.350 FM
Downlink: 437.225 FM
NUDT-Phone-Sat (CAS-3I)
Downlink: 437.300 Digital Telemetry 9.6kbps, FSK
The AMSAT-BB reports CW beacon activity from the satellites after launch
although the actual orbit is reported to be running approximately two
minutes
later than the estimated Keps.
[ANS thanks Alan Kung, BA1DU, and CAMSAT for the above information]