ARLA/CLUSTER: CAMSAT anuncia para meio de Julho o lançamento de 6 novos satélites com transponders U/VHF

[João Costa > CT1FBF]

CAMSAT announces mid-July launch with six U/V transponders

*Alan Kung, BA1DU* (CAMSAT CEO) recently sent AMSAT-NA the following
press release:

CAMSAT-orchestrated *CAS-3* amateur satellite system is now nearing
completion, six Chinese amateur satellites will be launched in mid-July, it
includes different weight category satellites, consists of a 20 kg, three
10 kg and two 1 kg satellites.

All six satellites are equipped with substantially the same amateur radio
payloads, a U/V mode linear transponder, a CW telemetry beacon and an AX.25
19.2k/9.6k baud GMSK telemetry downlink are attached in each of the six
satellites, each set of amateur radio equipments has the same technical
characteristics, but operates on different frequencies of 70cm band uplink
and 2m band downlink.

During the years, CAMSAT works closely with DFH Satellite Co. Ltd to
complete the project, which is Chinese government aerospace contractor and
provided most of the support for this project. All the satellites are
currently conducting final testing and inspection, here are the technical
details:

*CAS-3A*:

? Micro-satellite architecture
? Dimensions: 400Lx400Wx400H mm
? Mass: 20kg
? Stabilization: three-axis stabilization system with its +Y surface
facing the earth
? Antenna: Deployable antenna, one 1/4? monopole VHF antenna with
max.0dBi gain is located at +Z side and one 1/4? monopole UHF
antenna with max.0dBi gain is located at ?Z side, close to the each
edge of satellite body
? Uplink: 70cm band
? Downlink: 2m band
? Amateur radio payloads:
Callsign: BJ1SB
CW Telemetry Beacon: 50mW, 22wpm
U/V Mode Linear Transponder: 100mW, 20kHz bandwidth, spectrum
Inverting
AX.25 telemetry: 100mW, 19.2k/9.6k baud GMSK

*CAS-3B, CAS-3C and CAS-3D*:

? Micro-satellite architecture
? Dimensions: 250Lx250Wx250H mm
? Mass: 9kg
? Stabilization: three-axis stabilization system with its +Y surface
facing the earth
? Antenna: Deployable antenna, one 1/4? monopole VHF antenna with
max.0dBi gain is located at +Z side and one 1/4? monopole UHF
antenna with max.0dBi gain is located at ?Z side, close to the each
edge of satellite body
? Uplink: 70cm band
? Downlink: 2m band
? Amateur radio payloads:
Callsign: BJ1SC ( for CAS-3B), BJ1SD ( for CAS-3C), BJ1SE (for CAS-3D
CW Telemetry Beacon: 50mW, 22wpm
U/V Mode Linear Transponder: 100mW, 20kHz bandwidth, spectrum
Inverting AX.25 telemetry: 100mW, 19.2k/9.6k baud GMSK

*CAS-3E and CAS-3F*:

? Cube-satellite architecture
? Dimensions: 110Lx110Wx110H mm
? Mass: 1.5kg
? Stabilization: Spinning stabilization using permanent magnet torquer
? Antenna: Deployable antenna, one 1/4? monopole VHF antenna with
max.0dBi gain is located at +Z side and one 1/4? monopole UHF
antenna with max.0dBi gain is located at ?Z side, close to the each
edge of satellite body
? Uplink: 70cm band
? Downlink: 2m band
? Amateur radio payloads:
Callsign: BJ1SF ( for CAS-3E), BJ1SG ( for CAS-3F)
CW Telemetry Beacon: 50mW, 22wpm
U/V Mode Linear Transponder: 100mW, 20kHz bandwidth, spectrum
Inverting
AX.25 telemetry: 100mW, 9.6k baud GMSK

This launch will use an brand new Chinese launch vehicle named as
Long March ? 6 (LM-6 or CZ-6) at Taiyuan Satellite Launch Center of
China, CAS-3A will operate at about 450 km height sun-synchronous
orbit, the other satellites will operate at about 530 km height sun-
synchronous orbit.

The launch will carry total of 20 satellites, there are other three
satellites named as CAS-3G, CAS-3H and CAS-3I involved in amateur
radio from other agencies of China will share the same launch, CAMSAT
was assisting Chinese government administration to coordinate and
allocate their frequencies, more details will be announced later.

Thanks to Alan Kung, BA1DU, CAMSAT and ANS for the above information
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