ARLA/CLUSTER: Radio-balão em 434 MHz emite em Spread Spectrum e SSDV

[João Costa > CT1FBF]

Spread Spectrum and SSDV on 434 MHz Balloon

Today after 11am, David Akerman M0RPI hopes to launch a 434 MHz
balloon that will use the latest LoRa spread spectrum techniques as
well as transmitting Slow Scan Digital Video and a UKHASNET Repeater

The balloon will carry three trackers:

BUZZ 434.250MHz, 50 baud RTTY, 460Hz shift 7 N 2, telemetry only

LORA1, 434.450MHz, LoRa modulation (explicit mode, error coding 4:8,
spreading factor 11, 20.8kHz bandwidth), telemetry only

LORA2, 434.550MHz, LoRa modulation (implicit mode, error coding 4:5,
spreading factor 6, 20.8kHz bandwidth), telemetry and SSDV

If you happen to have a suitable LoRa modem, then you can receive
either of the LoRa transmissions; otherwise you can see the signal on
an SDR but you won't be able to decode.

All three should appear on SNUS or any of the other tracking maps.

Video streaming of the launch:
http://www.batc.tv/streams/m0rpi

The chase car will be carrying an APRS beacon M0RPI-7, which you can see here:
http://aprs.fi/#!call=a%2FM0RPI-7&timerange=3600&tail=3600

Online real-time tracking of balloons
http://spacenear.us/tracker/

Mobile Tracker
http://habitat.habhub.org/mobile-tracker/

Beginners Guide to Tracking using dl-fldigi software
http://ukhas.org.uk/guides:tracking_guide

Slow Scan Digital Video (SSDV) Guide
http://ukhas.org.uk/guides:ssdv

See received SSDV images on the web at
http://ssdv.habhub.org/

To get up-to-date information on balloon flights subscribe to the
UKHAS Mailing List by sending a blank email to this
address:ukhas+subscribe  googlegroups.com

Follow balloon chat on the #highaltitude IRC channel
athttp://webchat.freenode.net/?channels=highaltitude