Parkinson's SAT

Parkinson's SAT (OSCAR 84)
Type:	Amateur radio satellite
Country:	United States
Operator:	United States Naval Academy
COSPAR-ID :	2015-025D
Mission dates
Size:	10 cm × 10 cm × 15 cm
Begin:	May 20, 2015, 15:05 UTC
Starting place:	CCAFS LC-41
Launcher:	Atlas-5 (501) AV-054
Orbit data
Orbit inclination :	55 °
Apogee height :	700 km
Perigee height :	350 km

ParkinsonSAT , PSAT or Naval Academy OSCAR 84 is an American technology demonstration satellite and an amateur radio satellite for Packet Radio . It was built at the United States Naval Academy and was planned as a dual satellite (ParkinsonSAT A and B). The name ParkinsonSAT was chosen in honor of Bradford Parkinson , the father of the GPS system. After the successful launch, the satellite was assigned the OSCAR number 84.

mission

The satellite was launched from Cape Canaveral on May 20, 2015 with an Atlas 5 (501) rocket along with the main payload X-37B OTV-4 and nine other CubeSat satellites, including BRICSat-P .

ParkinsonSAT is a student satellite project. It was funded in part by the Aerospace Corporation . It has a transponder for the transmission of telemetry from remote measuring points (e.g.  floating buoys ). This telemetry is to be transmitted to a network of ground stations. A second transponder enables multi-user text transmission in PSK31 mode . This transponder was built by the Brno University of Technology .

Originally the project consisted of two identical satellites: PSat-A and PSat-B, two identical 1.5U CubeSats, which were to be brought into space together in a 3U starter. During the long wait for a launch opportunity, the design of the satellite was changed again in 2014. The solar cells have been replaced by new, more efficient cells. The other CubeSat, originally called PSat-B, was rebuilt and started as BRICSat-P .

Frequencies

• 406 MHz Ocean Data Telemetry Microsat Link (ODTML)
• 145.825 MHz APRS uplink and downlink (1200 Baud AX.25 )
• 435.350 MHz PSK31 downlink ( FM , 300 mW)
• 28.120 MHz PSK31 uplink ( SSB , 25 W permitted on an omnidirectional antenna)

Web links

• US Naval Academy Satellite Lab: ParkinsonSAT ( Memento from June 20, 2015 in the Internet Archive ) (English)
• US Naval Academy Satellite Lab: Design website PSAT - APRS plus a new PSK31 Approach (English)
• Software to decode the AX.25 telemetry from PSAT

Individual evidence

1. ↑ PSAT in the NSSDCA Master Catalog , accessed June 17, 2015.
2. ↑ Jonathan McDowell: Jonathan's Space Report No. 712 May 21, 2015, accessed June 13, 2015 . 
3. ↑ P-sat transponder WEB specification. Retrieved June 14, 2015 .