Just was on the last pass of SO-50. I was not hearing the satellite at first even as it rose above the trees. At the middle of the pass, I was expecting to find it at around 436.795 MHz, but I found it around 436.786 MHz.
Has anybody else noticed this?
73,
Paul, N8HM
Quoting Paul Stoetzer who wrote on Sat 2014-05-31 at 12:42:
Just was on the last pass of SO-50. I was not hearing the satellite at first even as it rose above the trees. At the middle of the pass, I was expecting to find it at around 436.795 MHz, but I found it around 436.786 MHz.
Has anybody else noticed this?
I just had a pass (and worked PD5DJ, thanks!) and I also noted a downward shift in frequency as I had to select the next downward shifted frequency earlier than gpredict was showing. Gpredict has the default 436.7950 in its configuration.
I can't give exact numbers as I was busy trying to hear/make a contact but there is some downward shift.
Koos van den Hout
Hi Koss and Paul, I do not think that the "normal" center frequency is 436.795 MHz.
I use two frequencies for the downlink in SatPC32:
436.791 and 436.788 MHz.
I have heard it suddenly jump about 5 kHz during a pass - but that is some time ago.
The two frequencies above are not always spot on but close enough.
Have a nice weekend all.
OZ1MY/Ib
----- Original meddelelse -----
Fra: Koos van den Hout [email protected] Til: [email protected] Dato: Lør, 07. jun 2014 12:27 Emne: Re: [amsat-bb] SO-50 Frequency Drift
Quoting Paul Stoetzer who wrote on Sat 2014-05-31 at 12:42:
Just was on the last pass of SO-50. I was not hearing the
satellite at
first even as it rose above the trees. At the middle of the pass,
I was
expecting to find it at around 436.795 MHz, but I found it around
436.786
MHz.
Has anybody else noticed this?
I just had a pass (and worked PD5DJ, thanks!) and I also noted a downward shift in frequency as I had to select the next downward shifted frequency earlier than gpredict was showing. Gpredict has the default 436.7950 in its configuration.
I can't give exact numbers as I was busy trying to hear/make a contact but there is some downward shift.
Koos van den Hout-- Koos van den Hout, PGP keyid DSS/1024 0xF0D7C263 via keyservers [email protected] Visit the site about books with reviews http://idefix.net/ http://www.virtualbookcase.com/ _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
73 OZ1MY Ib
What mode is AO 7 in today?
Always check here:
It looks like it's been in good shape today based on the satellite status page and log comments: http://aar29.free.fr/sat/ao7/ao7log.php
Of course, it can't be guaranteed that it'll stay in Mode B on each pass.
73,
Paul, N8HM
On Sat, Jun 7, 2014 at 11:46 AM, Rich/wa4bue [email protected] wrote:
What mode is AO 7 in today? _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Hi all.
If anyone in Europe is collecting grids, I'll be operating a demo station Sunday 8th from JO00EW
Will be active on anything with a transponder from the 09:08 pass of AO-73 through to about 15:30 UTC. I think that's about 12 satellite passes in total. - But no Doppler tracking in the field and manual antenna rotating. !
Thanks
David G0MRF/P
participants (5)
-
g0mrf＠aol.com -
Ib Christoffersen -
Koos van den Hout -
Paul Stoetzer -
Rich/wa4bue