User manual released for Fengtai OSCAR-118

Some of the students and teachers who participated in the CAS-5A project

Some of the students and teachers who participated in the CAS-5A project

CAMSAT’s transponder satellite CAS-5A (Fengtai OSCAR-118) launched on December 9, 2022, carrying three amateur radio transponders.

The satellite user manual can be downloaded here: CAS-5A Amateur Radio Satellite User’s Manual V1.0

Students participated in CAS-5A projectCAS-5A Frequencies:

CW Beacon: 435.570MHz CW 22wpm

U/V Linear Transponder: Uplink 145.820MHz, Downlink 435.540MHz, Bandwidth 30kHz

U/V FM Transponder: Uplink 145.925MHz,Downlink 435.600MHz Bandwidth 15kHz

H/U linear Transponder: Uplink 21.435MHz,Downlink 435.505MHz Bandwidth 15kHz

Telemetry: 435.650MHz GMSK 4800bps

CAMSAT amateur radio transponder satellites to launch this year

CAMSAT has released details of three new amateur radio satellites, CAS-5A, CAS-5B and CAS-6, that are hoped to launch in September 2018. Two of the satellites CAS-5A and CAS-6 will carry transponders.

CAS-5A a 6U CubeSat which will include the following capabilities:
• HF/HF – H/T Mode Linear Transponder
• HF/UHF – H/U Mode Linear Transponder
• HF – CW Telemetry Beacon
• VHF/UHF – V/U Mode Linear Transponder
• VHF/UHF – V/U Mode FM Transponder
• UHF – CW Telemetry Beacon
• UHF – AX.25 4.8k/9.6k Baud GMSK Telemetry.

The transponders will have 30 kHz bandwidths except the H/U one which will be 15 kHz. Planning a launch in September 2018 from the Jiuquan Satellite Launch Center into a 539×533 km 97.5 degree orbit.

CAS-5B a femto-satellite architecture 90Lx80Wx50H mm with a mass of 0.5kg Proposing a UHF CW beacon and to be deployed from CAS-5A when in space.

CAS-6 a 50 kg micro satellite approx 490 x 499 x 430 mm. It will include:
• VHF CW Telemetry Beacon
• U/V Mode 20 kHz Linear Transponder
• AX.25 4.8k baud GMSK telemetry downlink
• Deployable Antennas
• Solar Panels, Lithium ion battery and power controller
• Integrated Housekeeping Unit
• Three-axis stabilization system
• Atmospheric Wind detector
• S-band TT&C system (non-amateur radio band)
• X-band Data link system (non-amateur radio band)

Planning a Sea Launch Pad from the China Academy of Launch Vehicle Technology in September 2018 into a 579 x 579 km 45 degree orbit.

IARU Satellite Frequency Coordination Status