CAMSAT has announced the launch of its CAS-4A and CAS-4B linear transponder payloads. These payloads piggyback on the OVS-1A and OVS-1B optical remote sensing satellites, which were launched along with the hard X-ray modulation telescope (HXMT) satellite aboard a CZ-4B rocket from Jiuquan Satellite Launch Center at 03:00 UTC on June 15, 2017. Both satellites are in a 43 degree inclination orbit with an apogee of 524 km. The satellites should be among the following four objects from the launch, from Celestrak’s tle-new.txt:

2017-034A 1 42758U 17034A 17166.44020951 .00000000 00000-0 00000+0 0 9996 2 42758 43.0132 296.0634 0006996 337.6257 22.4799 15.08374244 50 2017-034B 1 42759U 17034B 17166.44014948 -.00077158 00000-0 00000+0 0 9995 2 42759 43.0111 296.0584 0007012 333.6014 26.4991 15.08628895 40 2017-034C 1 42760U 17034C 17166.44015010 .00000000 00000-0 00000+0 0 9999 2 42760 43.0156 296.0555 0006945 344.9860 15.1295 15.08497794 52 2017-034D 1 42761U 17034D 17166.44008307 .00000000 00000-0 00000+0 0 9991 2 42761 43.0142 296.0593 0008314 328.2359 31.8502 15.08952386 37

Both satellites carry 20 kHz U/v linear transponders as well as CW beacons and a digital telemetry downlink. Frequency information is as follows:

CAS-4A – U/v Inverting Analog SSB/CW Uplink LSB 435.210 MHz through 435.230 MHz Downlink USB 145.880 MHz through 145.860 MHz CW Beacon 145.855 MHz. Digital Telemetry 145.835 MHz 4.8kbps GMSK CAS-4B – U/v Inverting Analog SSB/CW Uplink LSB 435.270 MHz through 435.290 MHz Downlink USB 145.935 MHz through 145.915 MHz CW Beacon 145.910 MHz. Digital Telemetry 145.890 MHz 4.8 kbps GMSK

For more information about these satellites, see the CAMSAT CAS-4A and CAS-4B News Release