ILMARI-2007 Amateur Radio balloon launches 2nd September

A balloon carrying an Amateur Radio
144 MHz to 437 MHz linear transponder will be launched from Sappee, Finland on 2nd September.

The SSB/CW linear transponder will invert the passband so users will transmit LSB on 144 MHz and listen on USB on 437 MHz.

The balloon will also carry an FM AX.25 APRS, a 23cm ATV transmitter and a beacon in the 80 metre band.

Although the balloon will reach a maximum height of 31 kilometres, it is unlikely the UHF signals would be heard in the UK but it may be worth listening for the 80 metre beacon or tracking its progress on APRS.

Callsign:
OH2SIX (APRS OH2SIX-11 OH2SIX-12)
Launch time:
2007-09-02 06:00 UT
IARU Locator:
KP21GJ
Rx/Uplink:
144.305-144.345 MHz (LSB, CW) 40 kHz
Tx/Downlink:
437.346-437.386 MHz (USB, CW)
Beacon:
3579.5 kHz CW
Beacon:
437.725 MHz CW
Beacon:
437.850 MHz FM APRS (or AX.25 packet)
FM-ATV:
1282 MHz, Subcarriers: 6.0 MHz, 6.5 MHz, no pre-emphasis

More information is available at
http://wiki.ham.fi/Ilmari-2007.en

Many countries allow Amateurs to launch balloons carrying Amateur Radio transponders. At the present time, this is not permitted by the UK regulator Ofcom.

Related URLs

Swedish Amateur Radio Society - ILMARI flyger den 2 september (in Swedish)
http://www.ssa.se/

The Ilmari-2003 balloon project
http://www.kolumbus.fi/michael.fletcher/ilmari_data.htm

Ilmari-2007a - 16 August 2007
http://wiki.ham.fi/Ilmari-2007a

APRS
http://aprs.he.fi/?call=OH2SIX-11

Illmari Frequency Conversion Chart
http://www.kolumbus.fi/michael.fletcher/Ilmari_operation_manual_2007.doc