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Re: AO-51 Telemetry & WOD



Hi Clive,

The telemetry from AO-51 is generally downlinked all the time except when 
the second transmitter isn't running another mode.

I change the rate that the telemetry is collected and transmittted, mainly 
for WOD.  Since the new software was uploaded in early 2007, the PHT time 
doesn't always reflect the rate, there is another value that we set as a 
multiple of the PHT.  So generally I have been using 2*PHT, for a 30 sec 
rate.
Every week or so I change the rate to 5 sec for an orbit to get a good time 
handle on the eclipse time.

I generally have the WOD running and stored in a daily WOD file that 
normally could be downloaded from the BB using WiSP.  Unfortunately, we have 
an issue with the BB open and access via the SQRX.  We are attempting to 
improve this, but there is only one person that can change the software in 
this section. So the BB is not available for general use at this time.

I will be happy to send you some current WOD, let me know what you would 
like.  We don't have an WOD server setup at this time, but I am working on 
this.

I will send you a 24 hour WOD in csv format.

Let me know if you have any questions.

Best Regards,
Gould, WA4SXM
AO-51 Command Station

----- Original Message ----- 
From: "Clive Wallis" <clivew@zetnet.co.uk>
To: <amsat-bb@amsat.org>
Sent: Friday, August 17, 2007 7:20 AM
Subject: [amsat-bb] AO-51 Telemetry & WOD


> Hi,
>
> Recently I've been listening to Echo AO-51 on 435.150 MHz., and looking
> at some of the data in the KE4AZN telemetry archive.
>
> I've found a lot of information about the satellite, on the web, but
> still have a few questions.
>
> Is there a schedule of the sequence of when the various types of data
> packets are transmitted?   Looking at the archived data TLM appears to
> be transmitted every 15 seconds.
>
> Some of the packets I've received, mention WOD.   Is there a schedule
> for WOD capture and transmission?   Is the WOD archived any where?
>
> Any help would be greatly appreciated.
>
> 73     Clive    G3CWV
>
>       Hitchin, North Hertfordshire, UK.
> _______________________________________________
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