WREN The small 5X5X5cm Cube Satellite.
The tiny PocketQube satellite WREN is just 5x5x5 cm yet is equipped with a camera for Slow Scan TV (SSTV) using the Martin-1 format, a gyro, a magnetic field sensor, momentum wheels and pulsed plasma microthrusters. The camera has an image processing system which can find the position of the Sun and the Earth automatically.
|WREN Beacon on webSDR (http://zr6aic.giga.co.za:8902|
1) Beacons on 437.405 MHz (+/- 10 kHz Doppler shift)
Satellite sends 1.6 seconds in AFSK. Then it waits for 6 minutes for a signal.
It waits for a silent FM signal and Morse-like code. (So just keying the mike by hand will do.)
1 = long 0 = short
110011 = Activate (Wait for answers within 2 seconds)11111 = Camera on110 = Snapshot/Thumbnail (make image with 12x14 Pixels)110100 = SSTV send in Mode Martin-1 with 320x240 PixelsNo, there is no self destruct code.
The Telemetry Decoder and an Audio File of the beacon are available at http://we.tl/TkWEuhIlnF
WREN Decoder/Commander App Download https://www.dropbox.com/sh/pvzyr01216dab1k/uf4MQWEn5y
More details is available at http://amsat-uk.org/2013/11/28/commands-for-wren-sstv-released/