[amsat-bb] Re: CAPE-1 Tracking

Thu Apr 19 06:01:52 PDT 2007

Matt,

I haven't received any reports from the 0610 pass.  It was going to be a 
max elevation of 1 or less at our ground station.  The two passes before 
that AOS was about 4 minutes behind #31126 and probably 30-60 seconds 
behind P-POD C keps from the launch.  Tracking P-POD C kept the 
antenna's main lobe just ahead of the sat.

As far as the workshop is concerned, most of the team is in California 
as of last night.  The original team members, me, Wade and Shawn will 
not make it.

Jonathan Wagner

Matt Bennett wrote:
> Hi Jonathan,
>
> We plugged in the latest Keps and were looking behind
> #31126 for 1.5-3 minutes, but nothing was heard. It
> could be that we just didn't pick up the beacon, but
> I'm curious--did anyone else report reception to you
> at or around 0610 UTC today (4/19) ? 
>
> We'll continue tracking when we can, but we'll be
> pretty busy at the Workshop this weekend. No doubt the
> recent deployment is keeping you busy, but were you or
> any of your teammates attending this weekend?
>
> 73,
>
> Matt Bennett
> KF6RTB
>
> --- Jonathan Wagner <jonathan at jonathanwagner.net>
> wrote:
>
>   
>> Matt,
>>
>> As long as the satellite is still healthy, the CW
>> beacon should be 
>> active.  The latest reports are saying that CAPE is
>> trailing object 
>> #31126 by 1.5 - 3 minutes and is close to the
>> preliminary P-POD C keps 
>> (I think they're still on the cubesat.org website,
>> if not let me know 
>> and I'll dig them up).
>>
>> Thanks for tracking,
>>
>> Jonathan Wagner, KE5FSG
>> Cell: (337)781-1513
>>
>>
>>
>> Matt Bennett wrote:
>>     
>>> Hi Jonathan,
>>>
>>> We were listening to the afternoon pass here in CA
>>> (around 1900 UTC I believe), but we were only
>>>       
>> tracking
>>     
>>> the first objects listed on the website (A-E). Now
>>> that we have your object ID, we'd be happy to
>>>       
>> listen
>>     
>>> and make recordings tonight on the 0610 UTC
>>>       
>> west-coast
>>     
>>> pass (60 deg max EL here). I was unable to find an
>>> operations plan on the CAPE-1 website at first
>>> glance--can you please verify that the CW beacon
>>> should be active at 0610 UTC? 
>>>
>>> Thanks Jonathan. Congratulations to you and your
>>>       
>> team
>>     
>>> on a successful deployment!
>>>
>>> Matt Bennett
>>> KF6RTB
>>> UCISAT Project Manager
>>> University of California, Irvine
>>>
>>>
>>> --- Jonathan Wagner <jonathan at jonathanwagner.net>
>>> wrote:
>>>
>>>   
>>>       
>>>> Hi all,
>>>>
>>>> We are trying to gather a full snapshot of 3 CW
>>>> beacons from CAPE-1 to 
>>>> get an idea of the health of the satellite.  Part
>>>>         
>> of
>>     
>>>> the problem is that 
>>>> we don't know exactly where CAPE-1 is located. 
>>>> TLE's are available on 
>>>> W0RPK's website
>>>> http://showcase.netins.net/web/wallio/CubeSat.htm
>>>> about 
>>>> half-way down.  We managed to hear a weak signal
>>>> starting about 435.254 
>>>> MHz and ending around 435.237 MHz tracking object
>>>> #31126.  We've 
>>>> obtained some information that CAPE may actually
>>>>         
>> be
>>     
>>>> a little behind this 
>>>> one even, but we're not sure. 
>>>>
>>>> The satellite is transmitting CW and 9600 baud
>>>> G3RUH, but currently we 
>>>> are primarily interested in the SSB CW.  Also, if
>>>> you have the 
>>>> capability any recordings are more than welcome. 
>>>> Recordings can be sent 
>>>> to jonathan at jonathanwagner.net  If the recording
>>>>         
>> is
>>     
>>>> too large, send me 
>>>> an email and we'll figure out how to get it
>>>>         
>> across. 
>>     
>>>> The CW beacon we 
>>>> are looking for the most is the beacon 1 which
>>>>         
>> gives
>>     
>>>> us an idea of 
>>>> battery health.  The telemetry format is
>>>>         
>> available
>>     
>>>> at 
>>>> http://ulcape.org/wiki/CAPE1_Telemetry  There are
>>>>         
>> a
>>     
>>>> few audio examples 
>>>> at DTUsat's webpage
>>>> http://www.dtusat.dtu.dk/index.php?id=94  The
>>>>         
>> second
>>     
>>>> file labeled Unknown.wav is what the G3RUH data
>>>> sounds like in SSB mode 
>>>> and has been confused as the letter N. After that
>>>> signal ends, the next 
>>>> CW beacon is about 10-20 seconds away.
>>>>
>>>> The satellite is transmitting at 435.245 +/-
>>>> doppler.  Any help would be 
>>>> greatly appreciated.  Again any recordings or
>>>> decoded telemetry can be 
>>>> sent to me at jonathan at jonathanwagner.net
>>>>
>>>> -- 
>>>> Jonathan Wagner, KE5FSG
>>>> Cell: (337)781-1513
>>>>
>>>>
>>>> _______________________________________________
>>>> Sent via AMSAT-BB at amsat.org. Opinions expressed
>>>>         
>> are
>>     
>>>> those of the author.
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>>>>     
>>>>         
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>
>
> Matt Bennett
> KF6RTB
> UCISAT Communications Team Member
> University of California, Irvine
> www.ucisat.net
>
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