| |
CX2SA > SATDIG 16.04.11 21:06l 262 Lines 9540 Bytes #999 (0) @ WW
BID : AMSATBB6221
Read: GUEST
Subj: AMSAT-BB-digest V6 221
Path: IZ3LSV<IK2XDE<DB0RES<ON0AR<HS1LMV<CX2SA
Sent: 110416/1903Z @:CX2SA.LAV.URY.SA #:65415 [Minas] FBB7.00e $:AMSATBB6221
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. ARISSat-1 Failure to Transmit (Peter Portanova)
2. ARISSat-1/KEDR declared success by Roscosmos! (Alan P. Biddle)
3. Subject: Re: Verticals & Such on SSB Birds (Richard Lawn)
4. Re: ARISSat-1 - Battery Failure (tosca005@xxx.xxxx
5. Re: ISS Packet using AGWPE (JoAnne Maenpaa)
6. Re: Subject: Re: Verticals & Such on SSB Birds (Dave Guimont)
----------------------------------------------------------------------
Message: 1
Date: Sat, 16 Apr 2011 08:41:26 -0400
From: "Peter Portanova" <wb2oqq@xxxxxxx.xxx>
Subject: [amsat-bb] ARISSat-1 Failure to Transmit
To: <AMSAT-BB@xxxxx.xxx>
Message-ID: <0214AF1853F4487491EA8FC1CEA11C86@xxxx>
Content-Type: text/plain; format=flowed; charset=Windows-1252;
reply-type=original
Hello,
I don't possess any "inside information" on what the cause was of ARISSat-1
not to be heard, however I have a theory. We know that Packet
transmission's ended and began soon after the posted times for ARISSat to be
powered on/off, this action was done because they agreed that the satellite
"woke up". The power on sequence for ARISSat-1 is visual, meaning that if
their was a battery failure they would not have seen the satellite power up.
If we believe that this occurred a possible reason for not hearing the
satellite was that it was connected to the wrong antenna, and seeing the
coax in this area it is conceivable that this might be the cause. I know we
will learn what actually occurred, at some point, it's our priority not
theirs, perhaps we can have a contest, "pick the cause" and the winner can
win a good night's sleep in a motel of their choice, satellite equipment not
permitted.
73's Pete
WB2OQQ
------------------------------
Message: 2
Date: Sat, 16 Apr 2011 09:26:22 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] ARISSat-1/KEDR declared success by Roscosmos!
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <7619564B827B4702B5E854FE39695EB2@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Looks like we have all been wrong about this. Yesterday, just after
midnight Moscow time, I found this on the Roscosmos site:
http://www.federalspace.ru/main.php?id=2&nid=11669&lang=en
Russian Educational Satellite Works 16.04.2011
Russia's Kedr minisatellite designed by students from Kursk and carried to
the ISS under UNESCO's program in January has went on air.
Its first broadcast was carried out on April 11-13 to mark the 50 years of
the first manned space flight.
The 30-kg Kedr will transmit 25 greetings in 15 different languages, photos
of the Earth, telemetry and scientific data.
Hats off to the satellite designers at Kursk U.
More seriously, aside from the "embellishments" concerning Kursk, which in
fact only did their experiment package, it looks as if someone had a timed
release news article which they forgot to cancel.
Alan
WA4SCA
------------------------------
Message: 3
Date: Sat, 16 Apr 2011 11:39:26 -0400
From: Richard Lawn <rjlawn@xxxxx.xxx>
Subject: [amsat-bb] Subject: Re: Verticals & Such on SSB Birds
To: amsat-bb@xxxxx.xxx
Message-ID: <BANLkTim2p_3oSdh4vT_Q88Aq5jBTWNcioQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I too am always looking for ideas as I get older and know downsizing is
sooner rather than later forcing me to move and shed my M2 rotatable pair.
I've been slowly working on building double Moxon's for 440 and 2 meters
both using #6 copper wire and trying to measure very carefully. Another list
serve participant suggested I tried these as they have worked well for him
and better than other stationary antennas he has tried. Next up for me when
I have time is to try your Quadrifilars and I have another article or two on
construction suggestions. My one big question is how did you get the #6 wire
to solder? I use a gun and inevitably the joint breaks. What's your secret?
Torch?
Rick
W2JAZ
------------------------------
Message: 4
Date: 16 Apr 2011 10:47:57 -0500
From: tosca005@xxx.xxx
Subject: [amsat-bb] Re: ARISSat-1 - Battery Failure
To: R Oler <orbitjet@xxxxxxx.xxx>
Cc: Amsat BB <amsat-bb@xxxxx.xxx>
Message-ID: <Gophermail.2.0.1104161047570.7641@xxxx.xx.xxx.xxx>
Content-Type: text/plain; format=flowed; charset=UTF-8
On Apr 15 2011, R Oler wrote:
>
There are LOTS of reasons that the bird could have failed, in my viewpoint
the BEST one is that the battery has some issues. Operating the vehicle in
a thermal environment that it was not designed for would be a first guess,
followed by some sort of "crib death" issue, and next comes parts connected
wrong.
>
In any event the failure does not bode well for a successful sat
deployment.
>
>See if this makes it on the board. Robert G. Oler WB5MZO
>
>_______________________________________________
>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
>
One small consolation is that if the ISS crew can't get it working before
tossing it into space, it could (possibly) be brought back to Earth on a
future return trip to be diagnosed and repaired on the ground.
But let's hope it is something simple to fix up on the ISS and that someone
on the crew can take a little time to fix it.
But I also understand that none of those 3 scenarios are guaranteed (easy
to fix, time to fix it, or return it to Earth).
John P. Toscano, W0JT
------------------------------
Message: 5
Date: Sat, 16 Apr 2011 11:50:12 -0500
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
Subject: [amsat-bb] Re: ISS Packet using AGWPE
To: "'amsat-bb'" <amsat-bb@xxxxx.xxx>
Message-ID: <001201cbfc56$5ac10fa0$10432ee0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Hello Peter,
> connect to ISS using AGWPE with my soundcard.
> can anyone help me with this?
I found the links to JE9PEL's setup guides posted on the UISS main page to
be helpful in getting my soundcard packet running:
http://users.belgacom.net/hamradio/uisslinks.htm
> How does one connect to the ISS digipeater?
1. One good way to learn is to see what kind of packets others are sending.
You can spy on the ISS 145.825 MHz packet log at http://www.ariss.net/
2. 99% of the packet digipeats via ISS are UI packets (they aren't connected
to any specific node) and pretty much are an AX.25 CQ-with-text-string so to
speak.
3. To setup your packet path for the ISS setting the UNPROTO parameter to
'via ARISS'
(UNPROTO CQ VIA ARISS) is about all that is needed for the average user. The
digipeater at the ISS plugs in its specific callsign RS0ISS-3 or RS0ISS-4 in
response to the ARISS alias. There is a pull-down menu in the UISS program
where you can select ARISS.
4. An AX.25 hard-connection to the RS0ISS-11 Packet PBBS (C RS0ISS-11) is
not recommended over highly populated areas. If you establish a connection
to RS0ISS-11 the full AX.25 protocol for packet retries and timeouts takes
effect. Now your hard-connection retries will compete with the dozens of UI
packet transmissions and you'll never get to the PBBS anyways. You'll see
the ISS digi faithfully retrying and retrying per AX.25 protocol as it goes
over the horizon ... it will timeout over someone else's QTH. Most of the
PBBS messages you occasionally see are "Hello There" postings and not worth
the effort compared to the quick keyboard UI packet QSOs that many
successfully complete.
5. If you run UI-View along with UISS and AGWPE you can get an APRS map
showing the locations of the stations sending location data via ISS digi. I
have one example of an ISS pass mapped at
http://home.comcast.net/~k9jkm/UI_View_ISS_Pass.jpg
Hope this helps,
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
------------------------------
Message: 6
Date: Sat, 16 Apr 2011 11:53:28 -0700
From: Dave Guimont <dguimon1@xxx.xx.xxx>
Subject: [amsat-bb] Re: Subject: Re: Verticals & Such on SSB Birds
To: Richard Lawn <rjlawn@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <D2.3E.09483.5A5E9AD4@xxxxxxxxxxxxx.xxxx.xx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
>I too am always looking for ideas as I get older and know downsizing is
>sooner rather than later forcing me to move and shed my M2 rotatable pair.
>I've been slowly working on building double Moxon's for 440 and 2 meters
>both using #6 copper wire and trying to measure very carefully. Another list
>serve participant suggested I tried these as they have worked well for him
>and better than other stationary antennas he has tried. Next up for me when
>I have time is to try your Quadrifilars and I have another article or two on
>construction suggestions. My one big question is how did you get the #6 wire
>to solder? I use a gun and inevitably the joint breaks. What's your secret?
>Torch?
>
I use a torch with a large solder tip attached to it, es the torch
heats the tip....If you are very careful not to oxidize the joint,
just the torch will work.
73, Dave, WB6LLO
dguimon1@xxx.xx.xxx
Disagree: I learn....
Pulling for P3E...
------------------------------
_______________________________________________
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 221
****************************************
Read previous mail | Read next mail
| |
