Video: Commanding the WREN SSTV PocketQube

WREN - Image credit Stadoko

WREN – Image credit Stadoko

The WREN Team have released a video showing you how to use the WREN Decoder/Commander App.

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.

The WREN Decoder/Commander App uses the RTS pin of the com port to trigger TX of the radio (we use an ICOM 910h) for commanding. Decoder and Commander in one package.

Watch How to use the Decoder/Commander to send commands to Pocketqube Satellite WREN

The SSTV PocketQube WREN is currently in a mode where it beacons on 437.405 MHz (+/- 10 kHz Doppler shift) for 1.6 seconds then listens for 6 minutes on that frequency for any commands. If none are received it goes to sleep for 2 minutes before transmitting the beacon again.

WREN spectral view after ACTIVATE/HK command

WREN spectral view after ACTIVATE/HK command

Because the beacon is so infrequent the approach currently being used is to send commands to WREN on 437.405 MHz whenever you think it is in range.

Thanet Radio and Electronics Club member Patrick Kirkden M0ZPK was the first person in the UK to achieve a confirmed reception of WREN.

Hope you can catch WREN and have fun commanding it.

WREN Decoder/Commander App Download https://www.dropbox.com/sh/pvzyr01216dab1k/uf4MQWEn5y

WREN on Facebook http://www.facebook.com/StaDoKo

WREN a Ham Radio Slow Scan TV PocketQube Satellite https://amsat-uk.org/2013/10/24/wren-a-ham-radio-sstv-pocketqube/

Commands for WREN SSTV Released https://amsat-uk.org/2013/11/28/commands-for-wren-sstv-released/

Satellite Tracking https://amsat-uk.org/beginners/satellite-tracking/

Dnepr Yasny launch https://amsat-uk.org/satellites/dnepr-november-2013/