|$50SAT (Eagle2) was successfully launched from Dombarovsky Air Base in Russia on 21/11/13 at 07:11 UTC.|
The satellite went operational shortly after it was released from Unisat-5. During its first pass over the the UK on the 21st the Morse beacon was heard and FSK RTTY data received at 10:28 UTC
$50SAT (Eagle2) transmits a slow Morse FM beacon on 437.505Mhz, +/- 10khz to allow for Doppler shift.
Details of the communications, hardware, software, configurations and orbit parameters used can be found at the $50SAT Dropbox here.
There is a discussion group for $50SAT here
The $50SAT\Eagle2 team can be contacted by email at firstname.lastname@example.org
The primary purpose of $50SAT (Eagle2) was to create a cost effective platform for engineering and science students to use for developing real world skills. The pocketqube form factor has no precision mechanical parts and can be built from locally obtained sheet metal.
$50sat is comprised of two 40mm x 40mm circuit boards. The first is the processor/radio board which contains the PICaxe 40X2 processor programmed in PICaxe basic, the Hope RFM22B single chip radio and some peripheral devices. The PICaxe 40X2 is an easy to use micro controller popular in the education sector.
The second board is the power control and monitor board. This board contains four maximum power point controllers, one for each solar array on each side of the spacecraft as well as current monitors for the battery and summed solar power. The battery is a common 3.7V lithium ion camera battery.
The satellite will transmit data telemetry about the satellites operation, a sequence of call signs in slow FM Morse and some key data as fast FM Morse (120WPM). The main data payload will also be transmitted as FSK RTTY which should be readily heard on the ground with basic amateur radio equipment.
$50SAT has been a collaborative education project between Professor Bob Twiggs, Morehead State University and 3 radio amateurs, Howie DeFelice, AB2S, Michael Kirkhart, KD8QBA, and Stuart Robinson, GW7HPW.