Two New Chinese Ham Satellites Expected to Launch in September

Two new Chinese amateur radio satellites are expected to launch on September 15. CAS-7A and CAS-7C follow in the wake of numerous amateur radio satellites put into space by CAMSAT. CAS-7A, a 27 kilogram microsat, will carry several transponders, including a 15-meter-to-10-meter (H/t) linear transponder, and a 2-meter-to-70-centimeter (H/u) linear transponder. CAS-7A also will include a V/u (2 meters to 70 centimeters) FM voice transponder. According to the International Amateur Radio Union (IARU) satellite coordination site, CAS-7A is planned to have CW beacons on both 10 meters and 70 centimeters, 4.8k or 9.6k GMSK telemetry on 70 centimeters, and a 1 Mbps GMSK image data downlink on 3 centimeters for an onboard camera.

CAS-7C is a 2U CubeSat carrying a V/u linear transponder and a CW beacon. IARU has not yet coordinated frequencies for CAS-7C, which is to deploy a 1,080-meter (3,543 feet) long, 1-millimeter carbon fiber rope.

The two satellites will launch from Jiuquan Satellite Launch Center into a 500-kilometer sun-synchronous orbit with an inclination of 98°. 

Frequency:
1.CAS-7A H/T linear transponder:
Uplink frequency 21.245 MHz-21.275 MHz
Downlink frequency 29.435 MHz-29.465 MHz
CW beacon 29.425 MHz

2.CAS-7A H/U linear transponder:
Uplink frequency 21.3125 MHz-21.3275 MHz
Downlink frequency 435.3575 MHz-435.3725 MHz
CW beacon 435.430 MHz

3.CAS-7A V/U linear transponder:
Uplink frequency 145.865 MHz to 145.895 MHz
Downlink frequency 435.385 MHz to 435.415 MHz
CW beacon 435.430 MHz

4.CAS-7A V/U frequency modulation (FM) transponder:
Uplink frequency 145.950 MHz
Downlink frequency 435.455 MHz
4.8k/9.6k GMSK telemetry signal downlink frequency 435.480 MHz
1Mbps GMSK image data downlink frequency 10460.00 MHz