CAMSAT CAS-4A & 4B Linear Transponder Payloads Launched

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:

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
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
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
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
The OVS-1A & 1B satellites carrying the CAS-4A & 4B payloads.

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

RadFxSat (Fox-1B) Gets the Official OK for Flight

The RadFxSat (Fox-1B) Mission Readiness Review was held Saturday morning, April 29th, at the Cal Poly campus in front of a board representing Tyvak, Cal Poly, and NASA.
The purpose of the review is to verify that all requirements are met for a safe and successful launch and deployment. Vice President Engineering Jerry Buxton, N0JY, presented 81 PowerPoint slides covering all of the ICD (Interface Control Document) requirements, mission, operations, and deorbit.
At the conclusion of the presentation including questions answers, the panel unanimously approved RadFxSat as ready for flight. The next milestone will be integration into the P-POD with launch scheduled NET (No Earlier Than) September 23, 2017 aboard a Delta II at Vandenberg AFB.

RadFxSat/Fox-1B Flight Model

RadFxSat (Fox-1B) Nearing Completion

RadFxSat flight unit has been assembled and is going through various stages of testing before it is put through environmental (shock, vibe, bakeout) testing in August  for completion in early September.  Launch is scheduled for January 20, 2017.

In a recent test stop in Fox Labs for a few days, most of the testing was streamed live on YouTube to give enthusiasts an opportunity to “look over the shoulder” of VPE Jerry Buxton, N0JY as he conducted tests on the flight unit along with other Fox Engineering Team members on GoToMeeting.

If you missed the live video, you can view the archives at

RadFxSat is expected to be back in Fox Labs around August 11 for another round of tests and it is planned to have live streaming during those tests as well.

View of live streaming from YouTube
View of live streaming from YouTube