$50SAT

$50SAT (also known as Eagle-2, OSCAR 76, Morehead-OSCAR 76 and MO-76) is an American amateur radio satellite. It was launched on November 21, 2013 with a Dnepr rocket from the Dombarovsky Air Base, in Orenburg, Russia.

$50SAT

Mission type	Communications
Operator	MSU
COSPAR ID	2013-066W
SATCAT no.	39436
Website	www.50dollarsat.info
Mission duration	1 year and 8 months
Spacecraft properties
Bus	PocketQube
Launch mass	21 kilograms (46 lb)
Dimensions	5 cm × 5 cm × 7.5 cm (2.0 in × 2.0 in × 3.0 in)
Start of mission
Launch date	21 November 2013, 07:10 UTC
Rocket	Dnepr
Launch site	Dombarovsky 370/13[1]
End of mission
Last contact	19 July 2015
Decay date	19 May 2018
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	376 kilometres (234 mi)
Apogee altitude	381.5 kilometres (237.1 mi)
Inclination	97.7°
Period	92 minutes
Epoch	21 March 2018
Transponders
Frequency	Downlink: 437.505 MHz
OSCAR

$50SAT was developed by Bob Twiggs at Morehead State University (MSU) along with three other radio amateurs and was used to train students. The satellite transmits telemetry data in various operating modes in the 70 cm band. It is based on the PocketQube design for very small and inexpensive satellites and measures 5 cm × 5 cm × 7.5 cm (1.5 U). After several months of problems due to low battery voltage, $50SAT finally dropped below the 3,300 mV required for data transmission on July 19, 2015 and thus ceased operation.