[amsat-bb] CAMSAT CAS-4A and CAS-4B launched today

[Scott]

Thank you for the details on these new satellites, Alan.

Signals on the telemetry frequencies from both satellites are extremely
strong.

Is there any information available on what the AX.25 4.8k Baud GMSK
Telemetry streams contain, or how to decode the data?

Thanks very much!

-Scott,  K4KDR
Montpelier, VA  USA


===============================

On Thu, Jun 15, 2017 at 1:54 AM, Alan Kung <camsat at vip.163.com> wrote:

> CAS-4A and CAS-4B Satellites from CAMSAT Launched today
>
>
> Two CAMSAT’s armature radio payloads piggybacked on the optical remote
> sensing micro-satellites OVS-1A and OVS-1B have been launched at 11:00BJT
> on June 15, 2017 at The Jiuquan Satellite Launch Center of China, using
> CZ-4B launch vehicle. The primary of this launch is a hard X-ray modulation
> telescope satellite (HXMT).
>
>
> ● Satellite Name:  CAS-4A/OVS-1A
> ● Architecture: Micro-satellite
> ● Dimensions: 494Lx499Wx630H mm
> ● Mass: 55kg
> ● Stabilization: three-axis stabilization system with its +Y surface
> facing the earth
> ● Primary Payload: optical Camera with 1.98m resolution
> ● Orbit:
> ● Orbit type :       Sun synchronization orbit
> ● Apogee :         524km
> ● Inclination :       43º
> ● Period :          95.1min
>
>
> ● Amateur Radio Payload:
> ● Call sign: BJ1SK
> ● VHF Antenna: one 1/4λ monopole antenna with max.0dBi gain is located at
> +Z side
> ● UHF Antenna: one 1/4λ monopole antenna with max.0dBi gain is located at
> -Z side
> ● CW Telemetry Beacon:                  145.855MHz     17dBm
> ● AX.25 4.8k Baud GMSK Telemetry:         145.835MHz     20dBm
> ● U/V Linear Transponder Downlink:         145.870MHz     20dBm, 20kHz,
> Inverted
> ● U/V Linear Transponder Uplink:           435.220MHz
>
>
>
>
> ● Satellite Name:  CAS-4B/OVS-1B
> ● Architecture: Micro-satellite
> ●Dimensions: 494Lx499Wx630H mm
> ●Mass: 55kg
> ● Stabilization: three-axis stabilization system with its +Y surface
> facing the earth
> ● Primary Payload: optical Camera with 1.98m resolution
> ●Orbit:
> ● Orbit type :       Sun synchronization orbit
> ● Apogee :         524km
> ● Inclination :       43º
> ● Period :          95.1min
>
>
> ●Amateur Radio Payload:
> ● Call sign: BJ1SL
> ● VHF Antenna: one 1/4λ monopole antenna with max.0dBi gain is located at
> +Z side
> ● UHF Antenna: one 1/4λ monopole antenna with max.0dBi gain is located at
> -Z side
> ● CW Telemetry Beacon:                   145.910MHz   17dBm
> ● AX.25 4.8k Baud GMSK Telemetry:          145.890MHz   20dBm
> ●U/V Linear Transponder Downlink:          145.925MHz    20dBm, 20kHz,
> Inverted
> ●U/V Linear Transponder Uplink:             435.280MHz
>
>
> 73!
> Alan Kung, BA1DU