Håkan SM7WSJ skriver:
Förutom att vi har FOX satelliterna http://www.amsat.org/?page_id=1113 på väg upp i rymden under året, så kommer vi även att få ett antal nya linjära satelliter uppskickade från Kina.
Det verkar vara ett stort intresse för rymden från nya spelare (nationer) och det skulle inte förvåna mig om vi inom några år återigen får se någon amatörsatellit i högre bana.
Känns ännu mer inspirerande att bygga upp sin nya satellitstation med så mycket på väg upp i omloppsbana.
73 Håkan SM7WSJ
PS: Se även http://amsat-uk.org/2015/05/24/nine-cas-3-ham-radio-satellites/
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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.