Posts by DK2ZF

    DB9020

    so lautete in den 80er Jahren das Rufzeichen von Neumayer. DK2ZF war damals bei Norddeich Radio beschäftigt. Die Verbindung da runter lief immer in SSB auf 16/17 MHz Vollduplex, in den Nachmittagsstunden. Norddeich bei 17.3 MHz Neumayer bei 16,5 MHz.

    Die Signale waren immer sehr leise. Meistens mit schnellem Flatterfading, d.h. gespreizte F-Schicht-Übertragung. Das "entdeckte" seinerzeit DK2ZF mit DL3SK auf der OSCAR-6 10m-Bake. Wir beobachteten koordiniert um 40min lang ununterbrochen Telemetriedaten zu bekommen. Das 10m-Signal hörte sich zeitweise wie Aurora oder RS auf 10 GHz an.


    Die Beobachtungen wurden in den UKW-Berichten veröffentlicht und Dr. Röttger, DJ3KR, schickte mir daraufhin Material über die mir bis dato unbekannte "spread F2-communication" zur Verfügung.

    Im Nachhinein habe ich mich immer über die Ehefrauen gewundert, die bei Signalen knapp über der Grasnarbe ihren Ehemann kpl. verstanden haben. Andere beschwerten sich immer über das Rauschen. Ehefrau 1 konzentrierte sich auf das Nutzsignal, Ehefrau 2 auf das andere... Immer auf das Nutzsignal konzentrieren!


    It was a tragic news to read that Hanspeter Kuhlen, DK1YQ, died on September 23 at the age of 69 years. The funeral took place today near Munich.

    Hanspeter worked as an engineer in major aerospace companies; in the years before retiring he was mostly involved in frequency management matters on CEPT and ITU level. In the 1980s, he was a member of the RUDAK team in Munich, which at that time introduced the first digital techniques to AMSAT's amateur radio satellites, e.g. AO-40

    Being a licensed radio amateur since age of 18 years, he always kept his interest in amateur radio. After retirement he offered his knowledge and expertise to the DARC as a consultant for the problem of compatibility of amateur radio with Galileo satellites on the 23cm band.

    In that role he represented the interests of amateurs in talks with EU representatives and other involved parties; he was engaged in studies about this problem at a university in Munich, which were suggested by the German administration.


    We will miss him very much, our sympathy to his family.

    DK2ZF

    But this tower not exclusively for QO-100, I suppose.


    For QO-100 just a small tripod with 60cm dish would be sufficient.


    Over the weekend I am probably /p in JO40/41. Your freq please?

    73 DK2ZF+

    Moin Frank und Mitleser.


    Mir schwebte auch so etwas vor. Mit DJ5PW trafen wir uns morgens zwischen 06 und 07 auf der.710.

    Aber 700 ist leichter zu merken - für die über

    70jährigen..


    Gruss aus Buxtehude Rolf z.Zt. "portable"

    Assuming the direction to the satellite is correct, 5W and 22dBi should work nicely. So either you don't have 5W or the antenna is not 22dBi.


    there is nothing to add...

    just use a 65cm dish with G3RUH and you will be happy. There are so many busy contributors here. Rarely active on the xponder


    Greetings from Vienna - (portable equipment not ready yet)

    the dots are 3dB above noise,

    more or less than my suppressed carrier when I am not talking.

    What will be the conclusion? Prefer two-way contacts.

    February 14th we found that 50mW to a 60cm dish is sufficient for two qsos in cw 539 +

    At around 11:50 UTC A71A appeared on .710.


    DK2ZF was lucky enough to made the QSO number one.

    At first Hamid was on the Mike, later DB2OS and DH2VA


    They are running 300mW into 2.4m dish . The group will return on mondy.


    Well done boys !

    Feb. 14th 10:53 UTC:


    Tu ALL for the correct BCN qrg, i have a little offset but it doesnt matter AMATEUR RADIO is EXPERIMENTAL by definition.

    And: satellite means DUPLEX since the old OSCARS. You can run and tune simultaneously your own transmission by strength and quality.

    And now waiting for the upcoming procedure

    DK2ZF