The AO-7 AMSAT OSCAR Satellite
- this fantastic piece of amateur radio engineering launched in
November 15th. 1974 is still going strong even though her batteries
died long since
- I am particularly interested in the Mode A 145
MHz -> 29 MHz and Mode B 432
MHz -> 145 MHz linear transponders and have studied them
carefully (apologies for the Finnish)
- an article
I wrote up in Finnish for our Finnish Amateur Radio League SRAL montly
magazine Radioamatööri a.k.a "Vipunen" whn the satellite
reappeared after 21 years of silence !
- some usefuly links if you are hooked on AO-7, here are some more
links with further information on AO-7:
- my good friend Pauli Töyrylä, OH2DV,
was very active on AO-7 and made many nice QSO's over the bird; here is
a QSL
card from his QSO with JA8DJJ in Japan
- and a photo of the flipside
of JA8DJJ's QSL from the QSO made some three weeks after launch
- JA8DJJ also sent OM Pauli a couple of photos, one from his radio shack
in Sapporo and the other is of his antenna
system
- here is a QSL card from OM Pauli's AO-7 QSO only two days after
launch with Torsti Paatero, OH2RK
(SK), and here is the information
side of the QSL
- this very special QSL card for AMSAT OSCAR QSO's of his had a
built-in OSCARLATOR that actually worked and could be used (zoom into
photo photo above for details)
- Torsti Paatero was the original inventor of the OSCARLATOR, an
innovative satellite prediction and tracking device made from cardboard
and overlaying transparencies
- William Leijenaar, PE1RAH has revived the OSCARLATOR and provides
a downloadable
and printable version, even for the AO-7 satellite !
Updated 19.06.2008/OH2AUE
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