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Re: [eu-amsat] Re: Delfi-C3 RASCAL tuning & TLE's



On 1 May 2008 at 2:44, SV1BSX wrote:

> 
> 
> >
> > The KEPS i used are from spacetrack i know someone recommend to take those 
> > who appears on the ops DELFI page. If its only a KEPS matter
> > they should be quite far from the real orbit or something is moving in a 
> > funny way up there.
> >
> > I will try to listen sooner on the evening pass over here
> >
> >
> >
> > Luc Leblanc VE2DWE
> 
> 
> ....CORRECT Luc !  Probably that is the point. The Keps form Delfi-page is 
> now with... 10 min's  delay !!!
> 
> I have sent a new file with Keps,  where the Delfi is ...10 mins ahead from 
> previous Kepls!
> 
> He sent it me a friend of mine and he said it's 100% accurate.
> 
> I will try it also with these new Kepls today afternoon.

I refresh my Orbitron KEPS Mak and i just hear DELFI C 3 very loud but there is another problem who come out. The audio was very unstable 
the tone frequencies where not stable and some distortion seems to appears during the data transmissions making RASCALS completely unable 
to decode even a single packet.


Theses tones distortions gradually increased up to a point the transmitter shuts down.  The tone pointer on RASCALS was moving wild 
smashing both side limit of the scale and it was not what i got the first time i decoded my first packets.

Why the tone frequencies are no more stable even with doppler correction remain a mystery but surely the control team will come up with 
some explanations as they seems to be aware of this behaviour.

End of the story and a night to speculate on the subject!



Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
WAC BASIC CW PHONE SATELLITE

 

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