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Re: New Satellites



If I may offer a suggestion:

I believe everything came off the rocket in the same orbit plane or  
very nearly. They are now separating along that plane.  Point your  
antennas just above the horizon a few minutes before you expect the  
first in the group to rise and leave it there till you hear your bird.  
  If you have to transmit to it for it to respond, bang away at it  
just above the horizon till you get a response.  Eventually, when the  
objects separate enough and there are sets of elements to match each  
object, you can use that horizon crossing time against those keps sets  
to pick out which set matches your bird.

Chasing around the sky with your antennas is generally not productive.  
And you need to do the AOS time measurement anyway in order to figure  
out which object you are.

Jim


> Roger,
>
> We are actually doing a little bit of both using prediction software to
> guess where the sat is coming over and then manually adjust antennas
> during the pass.  This worked well for the first couple days, but now
> that the objects are separating, we don't know which object to point at.
>
> Jonathan Wagner
>
>
>
>
> Roger Kolakowski wrote:
>> Hi Jonathan...
>>
>> It almost sounds like you are using tracking software to control your
>> antennas. If so, at this point it might be better to disable automatic
>> tracking and "hand point" your system to determine which object
>> closest meets your needs.
>>
>> Just a thought...
>>
>> Roger
>> WA1KAT
>> ----- Original Message ----- From: "Jonathan Wagner"
>> <jonathan@jonathanwagner.net>
>> To: "Mineo Wakita" <ei7m-wkt@asahi-net.or.jp>
>> Cc: <amsat-bb@amsat.org>
>> Sent: Friday, April 20, 2007 7:53 AM
>> Subject: [amsat-bb] Re: New Satellites
>>
>>
>>> We're still not sure which object CAPE-1 is since we haven't heard it
>>> recently.  We think 31122 (OBJECT F) is P-POD A with CP4, Aerocube and
>>> Boeing's cube.  Tethers Unlimited's MAST was detected using tracking
>>> information for 31126 (OBJECT J). OBJECTS L, M and N are believed to be
>>> the P-POD B group CAPE1, Libertad1 and CP3, but no good contact has been
>>> made tracking these.  A station in Denmark reported hearing something
>>> from
>>> the L/M/N cluster but nothing decipherable.  If anyone on here has time
>>> and a station set up for tracking, any help finding the cubes is greatly
>>> appreciated.
>>>
>>> The latest we were tracking was an older version of this TLE.
>>>
>>> 1 31129U 07012N   07110.22204978  .00000384  00000-0  10000-3 0   102
>>> 2 31129 098.0841 185.3550 0102972 204.2636 155.3680 14.51906202   399
>>>
>>> Jonathan Wagner, KE5FSG
>>>
>>> On Fri, April 20, 2007 5:34 am, Mineo Wakita wrote:
>>>>
>>>> EGYPTSAT 1      31117
>>>> SAUDISAT 3      31118
>>>> SAUDICOMSAT 7   31119
>>>> SL-24 DEB       31120
>>>> SAUDICOMSAT 6   31121
>>>> OBJECT F        31122
>>>> SL-24 R/B       31123
>>>> SAUDICOMSAT 5   31124
>>>> SAUDICOMSAT 3   31125
>>>> OBJECT J        31126
>>>> OBJECT K        31127
>>>> OBJECT L        31128
>>>> OBJECT M        31129
>>>> OBJECT N        31130
>>>>
>>>> OBJECT J = CAPE-1 ?
>>>> 1 31126U 07012K   07109.87495130  .00000393  00000-0  10000-3 0    87
>>>> 2 31126 098.0837 185.0256 0094278 205.2982 154.3455 14.53328747   387
>>>>
>>>> http://www.celestrak.com/NORAD/elements/tle-new.txt
>>>> http://www.space-track.org/perl/login.pl
>>>>
>>>> ---------------------------------------------
>>>> Name: Mineo Wakita / JE9PEL, JAMSAT member
>>>> Mail: ei7m-wkt@asahi-net.or.jp
>>>> URL : http://www.ne.jp/asahi/hamradio/je9pel/
>>>> QTH : Yokohama Japan, GL:pm95tj
>>>> Date: Apr 20, 2007
>>>> ---------------------------------------------
>>>>
>>>> _______________________________________________
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>>>
>>>
>>> _______________________________________________
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>>
>>
>
> _______________________________________________
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