Radio amateur Philip Crump M0DNY plans a number of High Altitude Balloon (HAB) flights this weekend transmitting Slow Scan Digital Video (SSDV).
The launches will take place from Gilwell Park near Epping and the balloons are expected to land around Chelmsford in Essex.
They are planned as part of the Gilwell 24 Scouts Activity event, taking place from 9am Saturday, July 12 through the night to 9am Sunday, July 13 in Gilwell Park. The plan is to monitor predictions/weather, prepare the payload, launch when convenient, then Philip M0DNY will chase, recover and repeat, up to 2 additional times.
The balloons are 100g hwoyees, and so are only expected to reach around 14 km altitude due to the weight, and increasing chances of wet landing for a longer flight. A Raspberry Pi is being used for the SSDV, and will store images as well as short but frequent video clips.
Due to tracker issues I may be flying a borrowed SUSF tracker on 434.613 MHz, replacing my one on 424.125 MHz.
The USB frequencies used will be
• 434.200 MHz – G24HAB – 600 baud SSDV
• 434.125 MHz – GILWELL24 – 50 baud RTTY
• 434.613 MHz – GILWELL24 – 50 baud RTTY + 300 baud TurboHAB FSK (SSB)
Dave Akerman M0RPI is also launching on Saturday between 10-11am from Ross On Wye. His balloon will be transmitting on three frequencies one of which will be SSDV.
$$SUPER: 434.500MHz, 300 baud RTTY, 880Hz shift, USB, 8, N, 2, SSDV
$$UAD: 434.480MHz, Domino EX22
$$UAR: 434.475MHz, 50 baud RTTY, 400Hz shift, USB, 7, N, 1
The chase car is M0RPI_chase.
The balloons should have a radio range of up to 700 km providing coverage over a large part of the British Isles and into Europe.
Online real-time tracking of balloons
Beginners Guide to Tracking using dl-fldigi software
Slow Scan Digital Video (SSDV) Guide
Follow the launch day chat on the #highaltitude IRC channel at
The Chelmsford Amateur Radio Society have a new training course starting on September 4. To find out more speak to Clive G1EUC on
E-mail: training2014 at g0mwt.org.uk
What is Amateur Radio ? http://www.essexham.co.uk/what-is-amateur-radio