434 MHz balloons to launch for JOTA

Chris Stubbs M6EDF with 434 MHz trackers

Chris Stubbs M6EDF with 434 MHz trackers

Radio amateurs Chris M6EDF and Steve G0TDJ will each be launching 434 MHz balloons from Essex for Jamboree On The Air (JOTA) this weekend.

The balloons should be launched from Kingston Ridge Campsite in Essex on the Saturday and Sunday, Lat/Lon: 51.559144, 0.435010 http://www.kingstonridgecampsite.co.uk/index2.html

Chris Stubbs M6EDF posted on the UKHAS Google Group:
I will be launching JOTA1 at about 12:30 on Saturday 18/10/2014.
Using either a foil or 100g pawan depending on the conditions.
434.300 MHz SSB,RTTY, 50 baud, 7n2, 450Hz shift.

Steve G0TDJ posted:
Callsign: JOTA2
Date-Time: 19/10/2014 – 12:30pm
Frequency: 434.450 MHz SSB
Mode: RTTY 50n7 with 450Hz shift.
My launch will be at around 12:30pm (+/- ish) Tracking stations will be appreciated. This time, I’m going to try for a float since I will hopefully have plenty of time to prepare. The payload will be running on a Maplin AAA Lithium so expected Tx time will be >24hrs.

The balloon’s FSK (SSB) 434 MHz signals should be receiveable across much of the UK but for those out of range or who lack 70 cm SSB the online SUWS WebSDR can be used instead, see https://amsat-uk.org/2014/08/15/suws-websdr-moves-to-new-site/

Useful links for tracking and receiving 434 MHz balloons https://amsat-uk.org/beginners/balloons/