Mission typeCommunications
COSPAR ID2013-066W
SATCAT no.39436
Mission duration1 year and 8 months
Spacecraft properties
Launch mass21 kilograms (46 lb)
Dimensions5 cm × 5 cm × 7.5 cm (2.0 in × 2.0 in × 3.0 in)
Start of mission
Launch date21 November 2013, 07:10 UTC
Launch siteDombarovsky 370/13[1]
End of mission
Last contact19 July 2015
Decay date19 May 2018
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude376 kilometres (234 mi)
Apogee altitude381.5 kilometres (237.1 mi)
Period92 minutes
Epoch21 March 2018
FrequencyDownlink: 437.505 MHz
← OSCAR 75
OSCAR 77 →

$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 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.

See also


  1. ^ Graham, William (21 November 2013). "Russian Dnepr conducts record breaking 32 satellite haul". NASASpaceFlight. Retrieved 11 February 2020.