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SB SPACE @ ARL $ARLS007
ARLS007 Chinese Amateur Radio Satellite Launches Delayed

ZCZC AS07  
QST de W1AW  
Space Bulletin 007  ARLS007
>From ARRL Headquarters  
Newington, CT  September 29, 2020
To all radio amateurs

SB SPACE ARL ARLS007
ARLS007 Chinese Amateur Radio Satellite Launches Delayed

CAMSAT says the CAS-7A launch has been postponed until next May, and
CAS-5A until next June.

"Because of COVID-19, many things have been delayed," CAMSAT's Alan
Kung, BA1DU, told ARRL. He said an announcement would be made closer
to the announced launches.

CAMSAT said last spring that CAS-7A would launch in mid-September;
the launch has been postponed multiple times since first announced.
CAS-5A was predicted to launch in October. Both satellites will
carry two transponders that include HF, in a configuration similar
to that of the Russian RS satellites decades ago.

CAS-7A will be placed into a sun-synchronous orbit with an
inclination of 98 degrees at 500 kilometers above Earth. The
transponders will have a bandwidth of 30 kHz. According to the IARU
amateur satellite frequency coordination page, the HF/HF linear
transponder will uplink on 15 meters - 21.245 to 21.275 MHz, and
downlink on 10 meters - 29.435 to 29.465 MHz. A CW beacon will
transmit on 29.425 MHz. The HF/UHF transponder will uplink at
21.3125 to 21.3275 MHz, and downlink at 435.3575 to 435.3725 MHz. A
CW beacon for that transponder will transmit on 435.430 MHz.

The CAS-5A nanosatellite, with a 6U form factor, carries two HF
transponders and two VHF/UHF transponders. While in orbit, it will
deploy the tiny CAS-5B femtosatellite, which will weigh just 0.5
kilogram.

The array of CAS-5A linear transponders will include HF/HF, HF/UHF,
and VHF/UHF with 30-kHz passbands (except 15 kHz for the HF/UHF
transponder).

CAS-5A will include CW telemetry beacons on HF and UHF. The HF CW
beacon will be at 29.465 MHz, and a UHF telemetry beacon will be at
435.57 MHz. Other beacons include the HF/HF transponder beacon at
29.490 MHz; the HF/UHF transponder beacon at 435.505 MHz, and the
VHF/UHF transponder beacon at 435.540 MHz.

Telemetry will be transmitted at 435.650 MHz. The V/U linear
transponder will uplink at 145.820 MHz; the V/U FM transponder will
uplink at 145.925 MHz.  Terrestrial stations will access the
transponders at 21.385 - 21.415 MHz.
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/EX