ARLA/CLUSTER: Dados orbitais dos satlites CAS-4A e CAS-4B e dos transponders em V/UHF

Joo Costa > CT1FBF ct1fbf gmail.com
Quinta-Feira, 19 de Outubro de 2017 - 13:26:50 WEST 

CAS-4A and CAS-4B amateur radio transponders activated

On Wednesday, October 18, 2017 the amateur radio linear (SSB/CW)
transponders on the CAS-4A and CAS-4B satellites were activated

CAMSAT’s amateur radio payloads piggybacked on the optical remote sensing
micro-satellites OVS-1A (CAS-4A) and OVS-1B (CAS-4B) that were launched at
0300 GMT on Thursday, June 15, 2017 from the Jiuquan Satellite Launch
Center, on the CZ-4B launch vehicle. The primary payload of the launch was
a hard X-ray modulation telescope satellite (HXMT).

Satellite *CAS-4A/OVS-1A*:
● Architecture: Micro-satellite
● Dimensions: 494Lx499Wx630H mm
● Mass: 55 kg
● Stabilization: three-axis stabilization system with its +Y surface facing
the earth
● Primary Payload: optical Camera with 1.98m resolution

CAS-4A Orbit:
● Orbit type : Sun synchronization orbit
● Apogee: 524 km
● Inclination: 43°
● Period: 95.1 minutes

CAS-4A Amateur Radio Payload:
● Call sign: BJ1SK
● VHF Antenna: one 1/4λ monopole antenna with max. 0 dBi gain located at +Z
side
● UHF Antenna: one 1/4λ monopole antenna with max. 0 dBi gain located at -Z
side
● CW Telemetry Beacon: 145.855 MHz 17 dBm
● AX.25 4.8k Baud GMSK Telemetry: 145.835 MHz 20 dBm
● U/V Linear Transponder Downlink: 145.870 MHz 20 dBm, 20 kHz bandwidth,
Inverted
● U/V Linear Transponder Uplink: 435.220 MHz

Satellite Name: *CAS-4B/OVS-1B*:
● Architecture: Micro-satellite
● Dimensions: 494Lx499Wx630H mm
● Mass: 55 kg
● Stabilization: three-axis stabilization system with its +Y surface facing
the earth
● Primary Payload: optical Camera with 1.98m resolution

CAS-4B Orbit:
● Orbit type : Sun synchronization orbit
● Apogee: 524 km
● Inclination: 43°
● Period: 95.1 minutes

CAS-4B Amateur Radio Payload:
● Call sign: BJ1SL
● VHF Antenna: one 1/4λ monopole antenna with max. 0 dBi gain located at +Z
side
● UHF Antenna: one 1/4λ monopole antenna with max. 0 dBi gain located at -Z
side
● CW Telemetry Beacon: 145.910 MHz 17 dBm
● AX.25 4.8k Baud GMSK Telemetry: 145.890 MHz 20 dBm
● U/V Linear Transponder Downlink: 145.925 MHz 20 dBm, 20 kHz bandwidth,
Inverted
● U/V Linear Transponder Uplink: 435.280 MHz

CAMSAT Press Release PDF
https://ukamsat.files.wordpress.com/2017/03/camsat-cas-4a-and-cas-4b-news-release.pdf

AMSAT-UK http://amsat-uk.org/
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