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CX2SA > SATDIG 05.05.09 04:50l 278 Lines 8854 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
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Today's Topics:
1. Re: How satellites could 'sail' home (Tony Langdon)
2. Re: Cal Poly's CP6 Satellite Launching May 5th
(Rizwan 'Drake' Merchant)
3. JPL tour (Tim Goodrich)
4. CPX Data Decoder Software Available (Jason Anderson)
5. Dayton Reminder (Martha)
6. Cellphone Pass Predictions (Pedro Converso)
----------------------------------------------------------------------
Message: 1
Date: Mon, 04 May 2009 09:14:31 +1000
From: Tony Langdon <vk3jed@xxxxx.xxx>
Subject: [amsat-bb] Re: How satellites could 'sail' home
To: kg4zlb@xxxxx.xxxx amsat bb <amsat-bb@xxxxx.xxx>
Message-ID: <49fe2561.19f8720a.6038.ffff94cf@xx.xxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 02:00 AM 5/4/2009, David - KG4ZLB wrote:
> >From "Auntie" (or the BBC for anyone not from England!)
><http://news.bbc.co.uk/2/hi/science/nature/8029899.stm>
Hehe, that could get confusing for us, as we call our ABC (Aussie
equivalent of the BBC) "Auntie". :)
73 de VK3JED / VK3IRL
http://vkradio.com
------------------------------
Message: 2
Date: Sun, 3 May 2009 14:20:47 -0500
From: "Rizwan 'Drake' Merchant" <kommandantdrake@xxxxx.xxx>
Subject: [amsat-bb] Re: Cal Poly's CP6 Satellite Launching May 5th
To: Jason Anderson <jander06@xxxxxxx.xxx>, amsat-bb@xxxxx.xxxxxxx CAPE
Mailing List <cape@xxxxxx.xxx>
Message-ID:
<1e25d9aa0905031220n5a7e6843g54784afccea8b7d7@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Best of luck to CP6, I'll be in your irc channel watching for updates, as
they come out!
On Sat, May 2, 2009 at 8:54 PM, Jason Anderson <jander06@xxxxxxx.xxx> wrote:
> Hi Fellow Amateurs,
>
> Cal Poly's next satellite, CP6, is scheduled to launch on May 5th between
> 20:00 and 23:00 EDT. We would be more than happy if everyone who is
> interested could listen for CP6 as it comes over your locales. We will be
> providing a CPX Data Decoder program which will show you all of your
> decoded
> data as well as forward those packets to us at Cal Poly. I will be sending
> out another email in a few days regarding how to download the program.
>
> Also to note, we will be in the IRC chatroom at 'irc.freenode.org' in the
> 'cubesat' room before, during, and after the launch. Thanks!
>
>
> CP6 Satellite Link Information
> ------------------------------
> Frequency: 437.365MHz
> Modulation: FSK (but uses LSB cheat to make AFSK)
> Radio Mode: LSB (neccesary for LSB cheat)
> Baud Rate: 1200 baud
> Beacon rate: 1 beacon every 2 minutes
>
>
> - Jason Anderson, KI6GIV
> PolySat, Software Team Lead
> California Polytechnic State University
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
--
Sincerely,
Rizwan Merchant
------------------------------
Message: 3
Date: Sun, 3 May 2009 22:48:21 -0700
From: "Tim Goodrich" <tim@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] JPL tour
To: <amsat-bb@xxxxx.xxx>
Message-ID: <00d101c9cc7b$ef84eec0$ce8ecc40$@xxx>
Content-Type: text/plain; charset="us-ascii"
This weekend, JPL was open to the public for tours. I wanted to go, but they
turned me away because I had a dog in the car (going hiking afterwards). Did
anyone go and can you post pictures and a description of what they had?
Thanks,
Tim
KI6VBY
------------------------------
Message: 4
Date: Mon, 4 May 2009 01:50:43 -0700
From: Jason Anderson <jander06@xxxxxxx.xxx>
Subject: [amsat-bb] CPX Data Decoder Software Available
To: amsat-bb@xxxxx.xxx
Message-ID:
<6f43dc0a0905040150i41a134c4i96e17ae3b3abb460@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
So the CPX Data Decoder software is now available for download now at
http://moredbs.atl.calpoly.edu
Follow the link and click the 'Download' menu option. This will take you to
the download page where you can download the software for your computer.
You will still need to have your own tracking software to control the rotors
and radio as our software simply links onto the output of your TNC.
Launch night will hopefully go as follows. The rocket carrying CP6 will
launch on May 5th between 20:00 and 23:00 EDT. Minutes later the rocket
will kick out our CubeSat into orbit. Due to safety reasons, our satellite
will turn on 4 hours after it is deployed and will start to beacon every 2
minutes. Each beacon is 6 seconds long and contains 4 seconds of CW
followed by 2 seconds of a 1200 baud AX.25 packet.
Unfortunately for tracking purposes, tuning will still be a minor issue as
it was with our previous satellites (work is being done on our next
generation Comm system which will hopefully make this issue disappear). The
best way to combat our transceiver frequency drift is to start with the
calculated frequency and adjust the radio frequency manually as soon as you
hear a beacon. This is part of the reason why we have 4 seconds of CW
before the AX.25 data packet. One trick it to tune the the CW signal to
1200 Hz on a waterfall display (something like MixW if you have it) which
happens to line up the frequency to decode data packets. Hope everyone is
up for a small challenge :).
As for the TLE required to track our satellite, we have created a very rough
predicted TLE. We are told we will receive the actual TLE 4 hours after the
launch occurs which is approximately when our satellite will start to
beacon. We will be posting the updated TLE as soon as we receive it on the
CP6 information page found at
http://polysat.calpoly.edu/CP6.php
We will also announce the updated TLEs in the CubeSat IRC room which can be
found at
Server: irc.freenode.org
Room: cubesat
If you have any questions regarding the software or trying to contact CP6
please feel free to ask. Thanks for such a great initial response and I
wish you all happy satellite listening.
- Jason Anderson, KI6GIV
------------------------------
Message: 5
Date: Mon, 4 May 2009 12:16:07 -0400
From: Martha <martha@xxxxx.xxx>
Subject: [amsat-bb] Dayton Reminder
To: amsat-bb@xxxxx.xxx
Message-ID:
<956751cf0905040916k287c3144lbd582c7a25738db5@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I still have 1 room left for our hotel - The Hampton Inn at Fairborn. If
you are interested, please call me ASAP. This is due to a cancellation.
The days are Thursday, Friday and Saturday. Also, if you have not
registered for the AMSAT/TAPR, please do so by May11th. All registration
need to be done on the AMSAT store. If you have any questions, please call
me at 301-589-6062.
--
73- Martha
------------------------------
Message: 6
Date: Mon, 4 May 2009 15:19:49 -0300
From: "Pedro Converso" <lu7abf@xxxxx.xxx.xx>
Subject: [amsat-bb] Cellphone Pass Predictions
To: <amsat-bb@xxxxx.xxx>
Message-ID: <20090504171930.B84172E64A@xxxx.xxxxxx.xx>
Content-Type: text/plain; charset="us-ascii"
New facility to get satellite pass predictions on your cellphone available.
(if your cellphone can do to Internet)
Navigate to lu7aa.org.ar with your cellphone or mobile and select your
closest location.
You will get local time ordered predictions for popular birds, including
DUration in minutes and maximum Elevation in degrees.
List will show next passes from now on and up to a week in advance.
List obtained will look as:
* lu7aa.org.ar *
Sats @ local time
San Francisco, USA
MON 4-MAY
SATEL HH:MM DU EL
===== ===== == ==
RS-22 10:05 14 65
VO-52 10:07 11 18
NA-17 10:48 15 73
FO-29 10:49 16 35
AO-07 11:38 14 8
...
Sats Frequencies
ARISS PK:145.825 FM
DU:145.800 FM
....
This list was developed using KB5MU ITpass program and Internet appl. by
LU7ABF. Data & Keps updated twice daily.
This free facility is at test, could be handy when you are in travel,
planning your operation, or just to know which birds are coming.
Comments/suggestions welcome.
73, lu7abf, Pedro Converso
Lu7abf@xxxxx.xxx.xx
www.amsat.org.ar
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 4, Issue 212
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