[amsat-bb] Re: Delfi C3 transponder frequencies ?

[Alan Cresswell]

Hi David,

 

The frequencies I indicated were the satellite input/output frequencies as I
saw them here.

My transmit and receive frequencies were those frequencies +/- Doppler

 

It seemes to me that there is a 6kHz offset within the satellite
transponder.

 

I presume the Delfi team can tell us what the actual situation is.

 

Alan

ZL2BX

 

  _____  

From: G0MRF at aol.com [mailto:G0MRF at aol.com] 
Sent: Sunday, 27 July 2008 21:14
To: alancresswell at xtra.co.nz; oz1my at privat.dk
Subject: Re: [amsat-bb] Re: Delfi C3 transponder frequencies ?

 

In a message dated 27/07/2008 20:27:18 GMT Standard Time,
alancresswell at xtra.co.nz writes:

Hi all,

On the one good pass over ZL so far I had to use a +6kHz offset on my uplink
to receive on the nominal downlink frequency.
i.e. satellite input frequency of 535.556 (nominal 435.550) to hit the
145.900 satellite output frequency.

Alan
ZL2BX

Hello Alan  

Hello Ib

 

That's quite a spread of frequencies  556 to 565.   Was that corrected for
doppler?

I suppose the other possibility is that Alan has been listening towards the
end of the pass when the satellite has reached its maximum temperature and
drift?

This will be interesting to follow!

 

Sorry not to see you at Surrey this year Ib. Hope everything is OK

 

Regards

 

David