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Επιστροφή στο Forum : το πιο μακρινό dx!



antonis_p
30-03-09, 22:53
AMSAT-DL Reports Reflections from Venus

Germany’s amateur satellite organization, AMSAT-DL, reports successfully receiving echoes of signals bounced off of Venus on March 25, 2009. The group’s president, Peter Guelzow, DB2OS, says the AMSAT-DL team working toward launching an amateur radio satellite to Mars used a ground station at the Bochum observatory to transmit signals – “HI” in Morse code -- to our closest planetary neighbor. Nonetheless, the distance is nearly 100 million kilometers (67 million miles) and the radio signals took about five minutes to make the round trip at the speed of light.

This was the first time planetary echoes have been received in Europe, according to Guelzow, and the greatest DX ever achieved by radio amateurs, as the signals traveled more than 100 times farther than those sent to the moon for EME (Earth-Moon-Earth) contacts. A fast-Fourier-transform (FFT) analysis program was used to decode the returning signals. Guelzow says the tests were repeated successfully on March 26 and that as a result of the successful reception of echoes from Venus, the ground and command station at Bochum has been cleared for operational use.

AMSAT-DL is working on building a satellite known currently as Phase 5A (P5A), which is intended to be launched into Mars orbit in an effort to show that interplanetary exploration is possible on a “low budget” basis. Low budget in this case, however, will still require an investment of more than 20 million Euros (approximately $26 million US).

Ακρίτας
30-03-09, 23:09
Συχνότητα; Ισχύ;

antonis_p
30-03-09, 23:12
μόνο το πιο πάνω άρθρο μου έφτασε στο inbox.

Προσπαθω να βρω περισσότερες πληροφορίες.

Το site είναι αυτό: http://www.amsat-dl.org/

antonis_p
30-03-09, 23:15
τα γερμανικά μου ειναι τραγικά,
φαντάζομαι πως είναι αυτό: (5 kW Leistung auf 2.4 GHz)

από εδώ (http://www.amsat-dl.org//index.php?option=com_content&task=view&id=166&Itemid=97)

αυτό πρέπει να είναι το δελτίο τύπου (http://www.amsat-dl.org/pic/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=7561)

SV1EDG
31-03-09, 23:24
Κι εμείς παλεύουμε να ακουστούμε μέχρι το Ν.Ηράκλειο..Φώτη ακούς ???:biggrin::biggrin: