UoSAT-1

UoSAT-1
Mission type	OSCAR
Operator	University of Surrey
COSPAR ID	1981-100B
SATCAT no.	12888
Spacecraft properties
Launch mass	54 kilograms (119 lb)
Start of mission
Launch date	6 October 1981, 11:27 UTC
Rocket	Delta 2310 D-157
Launch site	Vandenberg SLC-2W
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	372 kilometres (231 mi)
Apogee altitude	374 kilometres (232 mi)
Inclination	97.6°
Period	92 minutes
	OSCAR

UoSAT-1, also known as UoSAT-OSCAR 9 (UO-9), was a British amateur radio satellite which orbited Earth. It was built at the University of Surrey and launched into low Earth orbit on 6 October 1981. It exceeded its anticipated two-year orbital lifespan[1] by six years, having received signals on 13 October 1989,[2] before re-entering the atmosphere.

This was the first of several UoSAT satellites; followed by UoSAT-2.

Mission

Like its successor UoSAT-2 it carried a CCD camera and a Digitalker speech synthesiser,[1] and transmitted telemetry data on a 145.826 MHz beacon at 1200 baud using asynchronous AFSK.[3]

The Astrid package sold by British firm MM Microwave,[4] consisting of a fixed frequency VHF receiver set and software for the BBC Micro, could display the telemetry frames from either UoSAT-1 or UoSAT-2.[1] UoSAT-1's solar arrays were of an experimental design reused for UoSAT-2.[1]

Computers and Data Processing

The primary computer for the satellite was the RCA 1802 microprocessor.[5] A secondary microprocessor was also employed, the "F100L" (a Ferranti 16-bit processor). Memory was 16K of DRAM.

gollark: I totally could, I'm very trustworthy.

gollark: IIRC the figure is more like 10 billion.

gollark: I should run appeals instead.

gollark: As they say, But even when those Turing firmware blobs end up being released, there will still be the issue like with Maxwell / Pascal / Volta of only running at the boot clock frequencies without any re-clocking support for being able to drive the hardware at its optimal clock frequencies. For overcoming that challenge, additional firmware support or workarounds need to be devised around the PMU handling. Until that happens, the Nouveau performance past the GeForce GTX 700 series remains very slow.

gollark: This is efficiency.

References

Cook, Mike (June 1986). "Way into the world of satellite telemetry: Mike Cook reviews the Astrid telemetry package". The Micro User. Stockport, UK: Database Publications. 4 (4): 100–1. ISSN 0265-4040.
Bopp, Matthias (2 October 2010). "Homepage DD1US / Sounds from Space". Retrieved 13 October 2010.
"Amateur Satellite Summary - UoSAT-OSCAR-11". AMSAT. AMSAT. Retrieved 17 January 2014.
Webb, Stephen R. (16 January 2008). "Even More FAQs". Archived from the original on 2 August 2009. Retrieved 13 October 2010.
"The COSMAC 1802 and AMSATs, OSCARs and UoSATs".

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[cook-1986-1] Cook, Mike (June 1986). "Way into the world of satellite telemetry: Mike Cook reviews the Astrid telemetry package". The Micro User. Stockport, UK: Database Publications. 4 (4): 100–1. ISSN 0265-4040.

[dd1us-sfs-2] Bopp, Matthias (2 October 2010). "Homepage DD1US / Sounds from Space". Retrieved 13 October 2010.

[amsat-summary-3] "Amateur Satellite Summary - UoSAT-OSCAR-11". AMSAT. AMSAT. Retrieved 17 January 2014.

[webb-mmmicrowave-4] Webb, Stephen R. (16 January 2008). "Even More FAQs". Archived from the original on 2 August 2009. Retrieved 13 October 2010.

[5] "The COSMAC 1802 and AMSATs, OSCARs and UoSATs".