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CX2SA > SATDIG 26.07.11 15:01l 688 Lines 22465 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Should I abandon full Doppler correction? (Wayne Estes)
2. Steve Bible blogs about ARISSat-1 on EE Times web site.
(Joe Fitzgerald)
3. Re: ISS Views STS-135 Re-entry (STeve Andre')
4. ARISSat-1 Battery (Clint Bradford)
5. Re: ISS Message Board (Ted)
6. Re: ISS Views STS-135 Re-entry (STeve Andre')
7. Re: Cubesat NANOSATC-BR (i8cvs)
8. Re: ARISSat-1 Battery (Anthony Monteiro)
9. Re: ISS Message Board (Bob Bruninga)
10. Re: ISS Message Board (Diane Bruce)
11. ARISSat-1 - Another Charging Time Scheduled? (Clint Bradford)
12. Guildford Talk - The Interplanetary Internet by Lloyd Wood
(Trevor .)
13. Re: ISS Views STS-135 Re-entry (Vince Fiscus, KB7ADL)
14. ISS BBS/Message Board (Kevin Deane)
15. Re: ND9M/P: DM35 / DM36 (Rick Tejera)
16. Trip Report - CN90 Portable Northern California
(David Palmer KB5WIA)
17. Re: Doppler Correction? (Paul Delaney - K6HR)
18. LA4FPA JP22 (John Papay)
----------------------------------------------------------------------
Message: 1
Date: Mon, 25 Jul 2011 12:50:02 -0700
From: Wayne Estes <w9ae@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Should I abandon full Doppler correction?
To: amsat-bb@xxxxx.xxx
Message-ID: <4E2DC8EA.5040707@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
NY4I wrote:
One of the things I like most about MacDoppler is that I can turn the
VFO and it will follow me. It does not enforce that I use the program to
change frequencies. That allows one to use a simple VFO know interface
to change frequencies while still having full Doppler correction.
W9AE replies:
SatPC32 provides three methods to tune across the passband of a linear
transponder while under full Doppler control:
1. With the radio's VFO knob
(most peoples' preference)
2. With the mouse, by clicking the on-screen tuning buttons
(for example, to go up 5 kHz with a single click)
3. With the keyboard:
up/down arrow keys for 100 Hz increments
left/right arrow keys for 20 Hz increments
+/- keys for 10 Hz increments
Methods 2 and 3 only work when SatPC32 is the active program window.
They don't work if, for example, your logging program is the active window.
SatPC32 doesn't force users to start Doppler tuning in the middle of the
passband. That's the default, but it's easy to modify the Doppler.SQF
file to start away from center, or on the beacon frequency.
Wayne Estes W9AE
Oakland, Oregon, USA, CN83ik
------------------------------
Message: 2
Date: Mon, 25 Jul 2011 17:06:39 -0400
From: "Joe Fitzgerald" <jfitzgerald@xxxx.xxx.xxx>
Subject: [amsat-bb] Steve Bible blogs about ARISSat-1 on EE Times web
site.
To: amsat-bb@xxxxx.xxx
Message-ID: <a8e94137177b01f8f6f467401d2501c0.squirrel@xxxx.xxx.xxx>
Content-Type: text/plain;charset=iso-8859-1
Our friends at Microchip are stirring up some interest in our project
outside the ham radio world.
http://www.eetimes.com/electronics-blogs/chips-in-space/4218140/The-Building-o
f-an-Amateur-Satellite-1
-Joe KM1P
------------------------------
Message: 3
Date: Mon, 25 Jul 2011 17:38:16 -0400
From: "STeve Andre'" <andres@xxx.xxx>
Subject: [amsat-bb] Re: ISS Views STS-135 Re-entry
To: amsat-bb@xxxxx.xxx
Message-ID: <4E2DE248.3000306@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 07/25/11 14:27, Clint Bradford wrote:
> NASA PHOTO -
>
> http://www.nasa.gov/images/content/573236main_iss028e018218_full.jpg
>
> Station Crew Views Shuttle Landing
>
> This unprecedented view of the space shuttle Atlantis, appearing like a
bean sprout
> against clouds and city lights, on its way home, was photographed by the
Expedition
> 28 crew of the International Space Station. Airglow over Earth can be seen
in the
> background.
>
> Image Credit: NASA
>
> I have run out of monitors for all these incredible
"screensaver/wallpaper" NASA photos ...
>
>
> Clint Bradford, K6LCS
>
This doesn't make any sense to me. It looks like a launch, not a descent.
If the shuttle went down at that angle it would be toast.
I think they got their captions wrong?
--STeve Andre'
wb8wsf en72
------------------------------
Message: 4
Date: Mon, 25 Jul 2011 15:39:00 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
Subject: [amsat-bb] ARISSat-1 Battery
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <416084A1-2ED9-418D-88BF-B812011D51E2@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
OK - Charging of the ARISSat-1's battery is scheduled for July 27. And a
test this weekend.
Will the battery be charged a second time - before EVA-29 on August 3?
What is the expected/anticipated battery "charge state" to be after the July
30 test? Good enough for deployment without another charge?
Clint Bradford, K6LCS
------------------------------
Message: 5
Date: Mon, 25 Jul 2011 15:43:03 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
Subject: [amsat-bb] Re: ISS Message Board
To: <amsat-bb@xxxxx.xxx>
Message-ID: <0130C4544FEB4223B6900A1E88C44781@xxxxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Curious..
If Gordon (always ready with a cheerful comment) is accurate, then what is
the purpose of the BBS? Also, Kevin is far from 'selfish'...he is just using
the available resources. Helpful education is far more useful than lame name
calling, Gordon.
Ted, K7TRK
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Gordon JC Pearce
Sent: Sunday, July 24, 2011 6:46 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: ISS Message Board
On Sun, 24 Jul 2011 05:07:16 -0700
Kevin Deane <summit496@xxxx.xxx> wrote:
>
> Good morning Jeremy, saw your message but she fell out of veiw...Thanks
KG6NUG for the cool flag that came up on my end anyway!!
>
> Glad to see active people and not BEACONS using the ISS Digi. Dont get me
wrong, they serve their purpose...
The problem is that when you use the packet BBS on the ISS, it stops
digipeating packets for anyone else. So, for that entire pass, you're the
only person who can work the ISS.
Don't be selfish.
--
Gordon JC Pearce MM0YEQ <gordonjcp@xxxx.xxx>
_______________________________________________
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
------------------------------
Message: 6
Date: Mon, 25 Jul 2011 18:41:12 -0400
From: "STeve Andre'" <andres@xxx.xxx>
Subject: [amsat-bb] Re: ISS Views STS-135 Re-entry
To: amsat-bb@xxxxx.xxx
Message-ID: <4E2DF108.2070205@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 07/25/11 19:04, Vince Fiscus, KB7ADL wrote:
> At 05:38 PM 7/25/2011 -0400, you wrote:
>> On 07/25/11 14:27, Clint Bradford wrote:
>> > NASA PHOTO -
>> >
>> > http://www.nasa.gov/images/content/573236main_iss028e018218_full.jpg
>> >
>>
>> This doesn't make any sense to me. It looks like a launch, not a
>> descent.
>> If the shuttle went down at that angle it would be toast.
>>
>> I think they got their captions wrong?
>>
>> --STeve
>
>
> I thought that too until I took another look at it. This is a two
> dimensional view of three dimensional space, so things in the photo
> might give a different impression than what is described by it. The
> decent only looks step because the earth is a sphere and the orbiter's
> track in this view is away from the ISS.
>
> 73
> KB7ADL
>
I'm struggling to 'get' this. It's certainly an interesting optical
illusion, or
whatever this kind of misleading effect is... Thanks, I'll ponder this!
--STeve Andre'
wb8wsf en72
------------------------------
Message: 7
Date: Tue, 26 Jul 2011 00:44:57 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Cubesat NANOSATC-BR
To: "ps8rf Piraja" <ps8rf@xxxxxxx.xxx>, "Amsat - BBs"
<amsat-bb@xxxxx.xxx>, <dguimon1@xxx.xx.xxx>
Message-ID: <004901cc4b1c$7ad44180$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "ps8rf Piraja" <ps8rf@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Saturday, July 23, 2011 3:53 PM
Subject: [amsat-bb] Cubesat NANOSATC-BR
Brazil is preparing to launch the NANOSATC-BR. The design of the BR-NANOSATC
is being developed by the National Institute for Space Research (INPE) and
students of Federal University of Santa Maria (UFSM) of state Rio Grande
do Sul here in Brazil.
"The BR-NANOSATC will have two scientific instruments, a magnetometer and
also a particle detector of precipitation for monitoring real-time
geospatial, and the precipitation of particles in the magnetosphere
disturbances on the Brazilian territory to determine its effects on regions
such as the South Atlantic Magnetic Anomaly (SAMA, the English acronym) and
the Brazilian sector of the equatorial electrojet.
This anomaly [SAMA] is a "failure" of the Earth's magnetic field in this
region, which is about Brazil, "said Jose Manuel Octavio Coordinator of the
National Institute for Space Research of Brazil. As a consequence of this
anomaly, there is a greater risk of the presence of particles high-energy
region, which can affect communications, signals from global positioning
satellites (like GPS), or even cause failure of electronic equipment such as
onboard computers. The INPE has been studying this anomaly for decades,
including several researchers international reputation, which even took part
in defining the mission and its payload. "
According to Otavio Dur?o, Technical Coordinator NanosatC-Br and INPE, the
situation referred to is its launch in November 2012. The uplink frequency
(UHF) and downlink (VHF) have been allocated by the IARU. The telemetry will
be at 145.865 MHz 9k6 BPSK. The project is receiving support from the
Amateur Radio Association Santamariense - ASRA and call sign of the control
station will be PY3EB. Dur?o told me it will be very interesting and welcome
the participation of the Amateur Radio satellite tracking.
We are waiting for soon the website with all the information the CubeSat
NANOSTC-BR.
The project is in full swing.
IARU Informations:
http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=209
73'
Piraj?, PS8RF
Hi Piraja', PS8RF
Daily I see news about new CubeSat's.. but like the one you mentioned
(build by commercial company), most of them have nothing to do with
Ham Radio anymore.
Ham Radio is only the vehicle to use our frequencies, that's all.. they are
not interested in ham radio...
I think it will not take long and we may loose our satellite frequencies
to the CubeSat community of institutes, industry, etc...
On the other hand, if the worldwide ham radio community does not support
P3-E, how can AMSAT-DL ever finish it and get it launched ?
I'm still optimistic regarding an affordable launch for P3-E in the future
but it may happen that we have a launch but AMSAT does not exist anymore
due to the lack of money to keep the world wide organization running..
The old HEO satellite users of OSCAR-10, OSCAR-13 and AO40 are
becoclintbradford@xxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <4E2DF8B4.9010808@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi Clint,
The battery can run ARISSat-1 for about 6 days on
the ISS so it will still be almost fully charged
if they run it for just 1 day.
Once it is deployed, the solar panels will charge
the battery.
73,
Tony AA2TX
---
On 7/25/2011 6:39 PM, Clint Bradford wrote:
> OK - Charging of the ARISSat-1's battery is scheduled for July 27. And a
test this weekend.
>
> Will the battery be charged a second time - before EVA-29 on August 3?
>
> What is the expected/anticipated battery "charge state" to be after the
July 30 test? Good enough for deployment without another charge?
>
>
> Clint Bradford, K6LCS
>
>
>
>
> _______________________________________________
> 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
>
>
------------------------------
Message: 9
Date: Mon, 25 Jul 2011 19:26:46 -0400
From: "Bob Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] Re: ISS Message Board
To: <amsat-bb@xxxxx.xxx>
Message-ID: <002b01cc4b22$521ec020$f65c4060$@xxx>
Content-Type: text/plain; charset="us-ascii"
> If Gordon ... is accurate, then what is
> the purpose of the BBS?
None practically. It is the most inefficient AX.25 packet arrangement
possible.
AX.25 connected packet depends on line-by-line ACKS. This works on a
two-way balanced link when both stations hear each other reliably and
without interference. But the Earth to ISS path is anything but balanced.
It is solid ISS to earth, but the other way is probably 10% if that much.
Thus, for each packet delivered, there are 10 RETRIES or more than 20
packets on channel to deliver EACH LINE.
But it is even worse than that. The ISS uses AX25V2L2 which means it does
not even send a RETRY without first sending a "what was your last heard line
number" packet. SO it will not even retry a single line until TWO more
packets have been exchanged. Now multiply that by the 10% channel
performance and it might take 20, 30 or 40 packets to deliver just ONE LINE.
That is why if someone logs onto the BBS, that the pass is more or less
wasted. The logee never gets a successful download due to all the
bazillions of inefficient overhead, and no one else gets to make any
digipeated contacts either.
Just listen to a BBS pass, and its wall to wall packets, but only a line or
two are actually delivered in most cases. The only true use of the BBS is
possible if the ground station is using a few kilowatts of ERP to make sure
that there are no missing ACKS!
Something like that,
Bob, WB4APR
------------------------ the available resources. Helpful education is far more useful than lame name
It's the way Gordon is, he's a nice chap online (on IRC). Don't take it
the wrong way. The pair of you should go have a beer together or something.
He's just a typical dour direct Scot, but he will drink you under the table.
;-)
- 73 Diane VA3DB
--
- db@xxxxxxx.xxx db@xx.xxx http://www.db.net/~db
Why leave money to our children if we don't leave them the Earth?
------------------------------
Message: 11
Date: Mon, 25 Jul 2011 13:37:01 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
Subject: [amsat-bb] ARISSat-1 - Another Charging Time Scheduled?
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <8F9F003F-2508-4680-8D2E-B52AF9A72EA1@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
OK - Charging of the ARISSat-1's battery is scheduled for July 27. And a
test this weekend.
Will the battery be charged a second time - before EVA-29 on August 3?
What is the expected/anticipated battery "charge state" to be after the July
30 test? Good enough for deployment without another charge?
Clint Bradford, K6LCS
------------------------------
Message: 12
Date: Mon, 25 Jul 2011 21:57:02 +0100 (BST)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
Subject: [amsat-bb] Guildford Talk - The Interplanetary Internet by
Lloyd Wood
To: amsat-bb@xxxxx.xxx
Message-ID:
<1311627422.43719.YahooMailClassic@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
The Amateur Radio satellite OSCAR-36 (UoSAT-12) and the UK-DMC satellite
were used for the first tests in space of the "Interplanetary Internet"
Lloyd Wood PhD, MSc, MEng, CEng MIET of the University of Surrey Centre for
Communication Systems Research (CCSR) will be giving a talk to the AMSAT-UK
International Space Colloquium about this exciting pioneering work in
bringing the Interplanetary Internet and terrestrial Internet together.
His talk will describe how pioneering tests of computer networking on Surrey
Satellite Technology's satellites (UoSAT-12 and UK-DMC) were able to
integrate the satellites with the terrestrial Internet, and then conduct the
first tests in space of the "Interplanetary Internet" that is designed for
NASA's deep space missions.
The talk takes palce 16:10 - 16:50 BST on Satuday, July 30, there will be a
live webstream at http://www.batc.tv/ch_live.php?ch=3
IPv6 in space
http://info.ee.surrey.ac.uk/Personal/L.Wood/dtn/interplanetary-internet
Delay-Tolerant Networking work:
http://personal.ee.surrey.ac.uk/Personal/L.Wood/dtn/
John Lloyd
http://www.ee.surrey.ac.uk/CCSR/profiles?s_id=5839&
The AMSAT-UK International Space Colloquium to be held July 30-31 at the
Holiday Inn, Guildford, GU2 7XZ, England. The event is open to all.
Either day passes or full packages comprising overnight accommodation and
meals are available. Fo is clear. I
am new to radio and Packet/APRS, learning and having fun.
I will just have fun blastin away at the message board and hope to catch
someone at there keyboard. I do sympathize with anyone who was not able to
get on while I was getting messages from actual people that helped me get
started with Packet in France and the Czech Republic.
I will stay off the BBS, unless in the future if I find someone who wishes
to have a Digi Qsl via ISS BBS who is outside my footprint, then at least I
will KNOW I am being selfish and will enjoy hogging the ISS only just a
little bit less now.
Kevin
KF7MYK
------------------------------
Message: 15
Date: Mon, 25 Jul 2011 17:44:52 -0700
From: "Rick Tejera" <saguaroastro@xxx.xxx>
Subject: [amsat-bb] Re: ND9M/P: DM35 / DM36
To: <claryco@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID:
<20110726004721.CART16474.fed1rmfepo201.cox.net@xxxxxxxxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Jim,
Hope to catch you again soon from a rare grid. Seems whenever you're out
there, I can't get on the air for whatever reason.
When are you working SSB? I need a few rare counties in AZ for the AZ Worked
all Counties award. Are you planning on being on Sat or Phone in any of the
following counties before heading out:
Coconino
Apache
Greenlee
Graham
Pinal
Gila
Yuma (I know that ones been done, just throwing it in for completeness ;))
Thanks for the opportunities you give or us to grab rare grids.
Hope you're enjoying the trip.
Clear Skies
Rick Tejera
Saguaro Astronomy Club
Phoenix, Arizona
www.saguaroastro.org
saguaroastro@xxx.xxx
K7TEJ, AMSAT 38452
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of claryco@xxx.xxx
Sent: Sunday, July 24, 2011 21:35
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ND9M/P: DM35 / DM36
Cori and I will be on from DM36 (possibly the grid line with DM35) on AO27
tomorrow (Monday) at 25/2043Z (approx turn on at 2047Z). Later on, we'll
head south a bit and be on from DM34 and then green stamper DM33 after that.
I don't know what pass(es) that will be however, but I know that Patrick,
WD9EWK, has got those two pretty well covered anyway.
We're still running all Arizona counties on HF CW and SSB, which really puts
a dent in efficient grid ops, but we'll be turning toward the northeast in a
couple days. Then we'll head for the much-in-demand DM66 grid in NM shortly
after that.
Also, now that we're back in AZ, tracking via APRS (ND9M-7) is more reliable
again.
73,
Jim, ND9M / VQ9JC
Flagstaff, AZ / DM66
_______________________________________________
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
------------------------------
Message: 16
Date: Mon, 25 Jul 2011 20:58:47 -0700
From: David Palmer KB5WIA <kb5wia@xxxxx.xxx>
Subject: [amsat-bb] Trip Report - CN90 Portable Northern California
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID:
<CAO-vtPMxm4WOG8_FKt6BO=PyfEuyFiR9cSCgByCtcNa3W2kDfg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Everyone,
This weekend I was able to sneak in some satellite operating during a
camping trip with my XYL. We went up to Eagle Lake in Lassen National
Forest, which is in Northern California and grid CN90. I had no idea
if satellite operation would even be possible from that location
(time-wise or terrain-wise) but it turned out it was pretty good! The
lake had low mountains around it, not more than a few degrees above
the horizon in all directions. I was able to work quite a few
satellite passes there, and it was a lot of fun talking to friends in
the sat community from that somewhat remote location!
The equipment worked well, and I learned the importance of verifying
the computer has updated keps before leaving home! My netbook
computer had keps that were several months old, which made
computer-aided tuning of the linear birds almost impossible! Ugh,
lesson learned, and another opportunity to practice manual tuning.
Patrick's suggestion of headset and voice recorder really worked well
though!
ICorrection?
To: "'AMSAT'" <AMSAT-BB@xxxxx.xxx>
Message-ID: <E66B56638C3846DD8B29A2473726B232@xxxxxx>
Content-Type: text/plain; charset=US-ASCII
> On Jul 24, 2011, at 9:00 PM, John Papay wrote:
> > Of course you must adjust your uplink calibration on SatPC32 so that you
> > hear yourself on the downlink. Hearing yourself in a normal voice will
> > be an indication that you have your calibration set properly.
Hello John,
When I transmit I do not hear myself on the downlink. How do I adjust the
uplink calibration in SatPC32 ?
Paul Delaney - K6HR
paul.hamradio@xxxxxxx.xxx
http://k6hr.dyndns.org:8080
------------------------------
Message: 18
Date: Tue, 26 Jul 2011 08:50:00 -0400
From: John Papay <john@xxxxxx.xxx>
Subject: [amsat-bb] LA4FPA JP22
To: amsat-bb@xxxxx.xxx
Message-ID: <654398.27862.qm@xxxxxxx.xxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Erling, LA4FPA, will likely be on the AO-7 pass
today around 1952utc. You can track him on aprs.fi
using LA4FPA-9. He has been operating from JP32 but
is planning for JP22 today. Good luck.
73,
John K8YSE
------------------------------
_______________________________________________
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 6, Issue 395
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