ARLA/CLUSTER: Radio-balão em 434 MHz emite em Spread Spectrum e SSDV
João Costa > CT1FBF
ct1fbf gmail.com
Quarta-Feira, 3 de Setembro de 2014 - 11:24:18 WEST
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
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