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CX2SA > SATDIG 07.10.11 21:04l 699 Lines 20991 Bytes #999 (0) @ WW
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Sent: 111007/1903Z @:CX2SA.LAV.URY.SA #:31049 [Minas] FBB7.00e $:AMSATBB6555
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Good URL for updating keps HRD (Kevin Deane)
2. Re: Good URL for updating keps HRD (Mark L. Hammond)
3. Re: ISS Keps (Tim Goodrich)
4. ISS (Kevin Deane)
5. Old Maplin Electronics Kit for UoSat 2 Reception (David Johnson)
6. Re: Good URL for updating keps HRD (Alan P. Biddle)
7. Re: ISS Keps (Alan P. Biddle)
8. 5500 rotor problem (Jeff KB2M)
9. Re: 5500 rotor problem (Jeff Welsh)
10. AO-27 Site Status (Clint Bradford)
11. CO6CBF/p FL02 in LotW now (Hector Luis Martinez Sis)
12. G5500 Elevation Rotator Short Circuit? (Clive Wallis)
13. 2011 AMSAT Space Symposium (Martha)
14. Re: G5500 Elevation Rotator Short Circuit? (Tim Cunningham)
15. Mars Science Laboratory Enclosed In Aeroshell (B J)
----------------------------------------------------------------------
Message: 1
Date: Thu, 6 Oct 2011 16:42:30 -0700
From: Kevin Deane <summit496@xxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Good URL for updating keps HRD
Message-ID: <COL107-W62783D452C2BC1B01C6C8183F90@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Does someone have a link for the good ISS keps again? I think it was posted
but I spaced it. Not one of these:
celstrck.com or amsat.org both bad.
Thanks!
Kevin
KF7MYK
------------------------------
Message: 2
Date: Thu, 06 Oct 2011 20:18:24 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
To: Kevin Deane <summit496@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Good URL for updating keps HRD
Message-ID: <hcJQ1h00P4ltuWb05cJQF9@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
http://www.celestrak.com/NORAD/elements/amateur.txt
http://www.celestrak.com/NORAD/elements/noaa.txt
http://www.celestrak.com/NORAD/elements/geo.txt
http://www.celestrak.com/NORAD/elements/weather.txt
http://www.celestrak.com/NORAD/elements/intelsat.txt
http://www.celestrak.com/NORAD/elements/cubesat.txt
http://www.celestrak.com/NORAD/elements/engineering.txt
http://www.celestrak.com/NORAD/elements/stations.txt
http://www.celestrak.com/NORAD/elements/tle-new.txt
http://www.amsat.org/amsat/ftp/keps/current/nasa.all
Knock yourself out ;)
73,
Mark N8MH
At 04:42 PM 10/6/2011 -0700, Kevin Deane wrote:
>Does someone have a link for the good ISS keps again? I think it was posted
but I spaced it. Not one of these:
>
>celstrck.com or amsat.org both bad.
>
>Thanks!
>
>
>Kevin
>KF7MYK
>
>
>_______________________________________________
>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: 3
Date: Thu, 6 Oct 2011 12:44:56 -0700
From: "Tim Goodrich" <tim@xxxxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ISS Keps
Message-ID: <007601cc8460$6d1f81d0$475e8570$@xxx>
Content-Type: text/plain; charset="us-ascii"
I think there may be something more to this. You're saying celestrak keps
are as correct and up to date as the online tracker. However, both HRD and
SatPC were wrong for me last night and I know HRD uses celestrak keps, which
I know were less than 12 hours old, if not only a couple hours old.
If it helps to decode this mystery, I know my friend running NOVA had the
correct info for the ISS pass last night.
Tim
K6TW
-----Original Message-----
From: Alan P. Biddle [mailto:APBIDDLE@xxxxxx.xxxx
Sent: Wednesday, October 05, 2011 2:00 PM
To: 'Kevin Deane'; amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: ISS Keps
Kevin,
The NASA.ALL Keps are issued and updated weekly, normally Friday, as they
have been for literally decades. The on line tracker widget gets Keps
directly, and so will be as up to date as Celestrak and Space Track. Two
different systems, and purposes, which is why there is a difference.
You will see a similar situation with ARISSat-1 as it slowly descends.
Which is a good chance to get another plug in for the Chicken Little
Contest.
73s,
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Kevin Deane
Sent: Wednesday, October 05, 2011 3:33 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ISS Keps
So here we are again, Amsat shows the ISS in the right spot but the keps it
gives out for automatic updates are around 6 minutes off again. I know about
the boosting and why they are off, just dont ubderstand WHY they are good on
the online tracker and not anything else?
Kevin
KF7MYK
_______________________________________________
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: 4
Date: Thu, 6 Oct 2011 22:47:28 -0700
From: Kevin Deane <summit496@xxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ISS
Message-ID: <COL107-W28EB468401E785103F2B1E83FE0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Figures I miss the pass everyone is on. Hope to catch someone tonight or
this morning. Mostly beacons on the west coast, however I did get a human
this morning...
Kevin
KF7MYK
------------------------------
Message: 5
Date: Fri, 07 Oct 2011 10:02:29 +0100
From: David Johnson <dave@xxxxxxxxxxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Old Maplin Electronics Kit for UoSat 2 Reception
Message-ID: <4E8EC025.5040402@xxxxxxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi,
About 25 years ago Maplin Electronics (UK) provided a RX kit for FM
reception of UoSat 2 it had doppler correction by changing the vxo by
reading the discriminator voltage and adjusting it.
Does anyone have one of these kits lurking on their shelf, either built
of still a bag of bits?
Please contact me off-line.
73
Dave, G4DPZ
------------------------------
Message: 6
Date: Fri, 7 Oct 2011 05:53:09 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
To: "'Kevin Deane'" <summit496@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Good URL for updating keps HRD
Message-ID: <2BB1DC6813A34CFD9C23E60AD37558AD@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Kevin,
If you want the most recently available Keps for the ISS, or anything else
not classified, it is worth getting a free account at Space Track.
www.space-track.org
They feed pretty much everything else, and update 3-5 times a day. More if
needed. I don't recall the last time the Celestrak Keps were off, but if
more current Keps exist, that is where to go. You can cut and paste them
into AMATEUR.TXT or other file as needed. I do that with new launches, and
in a real sense, each ISS boost is a new launch.
73s,
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Kevin Deane
Sent: Thursday, October 06, 2011 6:43 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Good URL for updating keps HRD
Does someone have a link for the good ISS keps again? I think it was posted
but I spaced it. Not one of these:
celstrck.com or amsat.org both bad.
Thanks!
Kevin
KF7MYK
_______________________________________________
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: 7
Date: Fri, 7 Oct 2011 05:53:09 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
To: "'Tim Goodrich'" <tim@xxxxxxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ISS Keps
Message-ID: <7C744F93812A45BBA9482073491F9A08@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Tim,
The font of all Keplerian knowledge, except for some of the satellites which
do not have their's published for security or other matters, is Space Track.
Space Track feeds Celestrak. There can be a few hours lag as the updates
propogate through the systems, and software updates. Usually no more than
6-8m hours. Both SATPC32 and HRD used Celestrak Keps, but they can, and do,
use the NASA.ALL Keps. It depends on how you have them configured. No
mystery, really.
73s,
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Tim Goodrich
Sent: Thursday, October 06, 2011 2:45 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: ISS Keps
I think there may be something more to this. You're saying celestrak keps
are as correct and up to date as the online tracker. However, both HRD and
SatPC were wrong for me last night and I know HRD uses celestrak keps, which
I know were less than 12 hours old, if not only a couple hours old.
If it helps to decode this mystery, I know my friend running NOVA had the
correct info for the ISS pass last night.
Tim
K6TW
-----Original Message-----
From: Alan P. Biddle [mailto:APBIDDLE@xxxxxx.xxxx
Sent: Wednesday, October 05, 2011 2:00 PM
To: 'Kevin Deane'; amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: ISS Keps
Kevin,
The NASA.ALL Keps are issued and updated weekly, normally Friday, as they
have been for literally decades. The on line tracker widget gets Keps
directly, and so will be as up to date as Celestrak and Space Track. Two
different systems, and purposes, which is why there is a difference.
You will see a similar situation with ARISSat-1 as it slowly descends.
Which is a good chance to get another plug in for the Chicken Little
Contest.
73s,
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Kevin Deane
Sent: Wednesday, October 05, 2011 3:33 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ISS Keps
So here we are again, Amsat shows the ISS in the right spot but the keps it
gives out for automatic updates are around 6 minutes off again. I know about
the boosting and why they are off, just dont ubderstand WHY they are good on
the online tracker and not anything else?
Kevin
KF7MYK
_______________________________________________
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
_______________________________________________
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: 8
Date: Fri, 7 Oct 2011 07:09:29 -0400
From: "Jeff KB2M" <kb2m@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] 5500 rotor problem
Message-ID: <009801cc84e1$95ac0b10$c1042130$@xxx>
Content-Type: text/plain; charset="us-ascii"
Starting to put my satellite system back on the air. Now having another
rotor problem. I think what happened is that after Hurricane Irene passed
by, everything was working. Later that morning a surprisingly strong wind
gust after Irene passed by blew my sat array over. I was unaware of this and
when I tried to work a sat I had a very weak signal. I went outside to check
the antenna system and found it laying on the ground. So what I think
happened is that the rotor was trying to turn while the antenna was on the
ground and burned out something in the rotor. It is not a cable problem, it
is definitely in the azimuth rotor, elevation works fine. I swap cables and
this showed the problem is in the az rotor only. Anyone have this same
problem? I'm going to take the rotor apart this weekend and would like some
ideas before I start. Any electrical test through the cable from inside the
shack to determine the problem would be much appreciated :-)
73 Jeff kb2m
------------------------------
Message: 9
Date: Fri, 7 Oct 2011 08:58:00 -0400
From: Jeff Welsh <jhwelsh@xxxxx.xxx>
To: Jeff KB2M <kb2m@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: 5500 rotor problem
Message-ID:
<CAGHdFOS9F3jfySM_fdgY8rvDKeOe0B6aY9Y31hULnu3L33vYmQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Jeff,
I burned up my 5400 azimuth motor twice while I had it and it was fairly
easy to disassemble the rotor housing and the motor casing.
The motors in the 5500 are very similar to those in the 5400 I used to have.
The only difference I noticed was the diameter of the motor shaft.
I had found the PCB leads on the back of the motor were completely fried and
blackened as well as the insulation on the leads were melted. With some
creativity one can repair it. If I remember correctly, a replacement 5500
motor from Yaesu was in the $130 price range and it only took be about 30
minutes to replace it.
The trickiest part was disassembling the rotor in such a way that the
bearings don't fall out. :)
Hope that offers some insight.
--jeff
N3QO
On Fri, Oct 7, 2011 at 7:09 AM, Jeff KB2M <kb2m@xxxxxxx.xxx> wrote:
> Starting to put my satellite system back on the air. Now having another
> rotor problem. I think what happened is that after Hurricane Irene passed
> by, everything was working. Later that morning a surprisingly strong wind
> gust after Irene passed by blew my sat array over. I was unaware of this
> and
> when I tried to work a sat I had a very weak signal. I went outside to
> check
> the antenna system and found it laying on the ground. So what I think
> happened is that the rotor was trying to turn while the antenna was on the
> ground and burned out something in the rotor. It is not a cable problem, it
> is definitely in the azimuth rotor, elevation works fine. I swap cables and
> this showed the problem is in the az rotor only. Anyone have this same
> problem? I'm going to take the rotor apart this weekend and would like some
> ideas before I start. Any electrical test through the cable from inside the
> shack to determine the problem would be much appreciated :-)
>
> 73 Jeff kb2m
>
>
> _______________________________________________
> 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: 10
Date: Fri, 07 Oct 2011 09:17:53 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AO-27 Site Status
Message-ID: <525740C4-0EC1-4330-BF61-D633CC510BF9@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
Forgive me if it has been answered recently - But does anyone know when the
AO-27 site may be back up?
Clint Bradford, K6LCS
909-241-7666
------------------------------
Message: 11
Date: Fri, 7 Oct 2011 12:33:44 -0400 (EDT)
From: "Hector Luis Martinez Sis" <hmartinez@xxx.xxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] CO6CBF/p FL02 in LotW now
Message-ID: <3292.10.14.32.18.1318005224.squirrel@xxxxxx.xxx.xxx.xx>
Content-Type: text/plain; charset="utf-8"
Hello Hams
?
Thanks very much to
all who worked me during my portable operation in FL02.
?
Contacts are now in
LotW. Please, upload the contacts using only my call sign without /P.
?
Thanks again
?
73!
?
Hector, CO6CBF
?
***************************************
Genius is one per cent
inspiration,
and ninety-nine per cent
perspiration.
-- Thomas A.
Edison
***************************************
---
Free the Cuban Five!
http://www.injusticia.cubaweb.cu/, http://www.antiterroristas.cu/
Participe en Universidad 2012, del 13 al 17 de febrero de 2012. Habana, Cuba.
http://www.congresouniversidad.cu/
Consulte la Enciclopedia Colaborativa Cubana: http://www.ecured.cu/
------------------------------
Message: 12
Date: Fri, 07 Oct 2011 17:35:22 +0100
From: Clive Wallis <amsat-bb@xxxxx.xx.xx>
To: amsat <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] G5500 Elevation Rotator Short Circuit?
Message-ID: <4E8F2A4A.6000600@xxxxx.xx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I wonder if this is a known fault. Recently the fuse on my G5500
blew. The problem seems to be a short on one of the motor circuits.
Checking the DC resistance at the control end, the resistance of one
winding is 1.2 ohms, whereas all the other windings are 4.6 ohms.
I could understand a motor burning out and going open circuit, but a
short circuit seems less likely. I'm wondering if it could be a short
on the cable at the rotator end, where it is subject to much bending.
There's about 15 metres of cable.
Any thoughts would be much appreciated. Unfortunately, at the present
time I'm not able to inspect the rotator. It's stuck in the horizontal
position, so I will still be able to use the antenna for low elevation
passes.
73 Clive G3CWV
Hitchin, North Hertfordshire, UK
------------------------------
Message: 13
Date: Fri, 7 Oct 2011 12:44:10 -0400
From: Martha <martha@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] 2011 AMSAT Space Symposium
Message-ID:
<CAPk0USxg3J=RhuoQ=eC3ZJCzOWCNSAMCmF1Cu4iAM9Z5eMLgSg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
People -* In one month*, AMSAT will hold the 2011 Space Symposium and Annual
Meeting. The venue is the Wyndham hotel in San Jose, CA. Please do not
hesitate to make your hotel reservations. Information can be found on the
AMSAT website along with the registration form for the meeting and banquet.
--
73- Martha
------------------------------
Message: 14
Date: Fri, 7 Oct 2011 12:50:50 -0500
From: Tim Cunningham <tim_cunningham@xxxxxxx.xxx>
To: <g3cwv@xxxxx.xxx>, amsat <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: G5500 Elevation Rotator Short Circuit?
Message-ID: <htrT1h0053e4cVL05trVbd@xxxxxxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
The common failure of the motor windings is caused by heat which causes the
enamel coated wire to breakdown. When the enamel breaks down an inner
winding short results.
I have successfully rewound motor windings on these rotators just to say it
could be done, but it takes some work (not recommended).
I have never seen one of these motors with an open winding. The failure mode
on the 8 that I have repaired were always enamel insulation breakdown as a
result of overheating.
Tim - N8DEU
Sent from my HTC Tilt? 2, a Windows? Mobile phone
-----Original Message-----
From: Clive Wallis <amsat-bb@xxxxx.xx.xx>
Sent: Friday, October 07, 2011 11:35 AM
To: amsat <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] G5500 Elevation Rotator Short Circuit?
I wonder if this is a known fault. Recently the fuse on my G5500
blew. The problem seems to be a short on one of the motor circuits.
Checking the DC resistance at the control end, the resistance of one
winding is 1.2 ohms, whereas all the other windings are 4.6 ohms.
I could understand a motor burning out and going open circuit, but a
short circuit seems less likely. I'm wondering if it could be a short
on the cable at the rotator end, where it is subject to much bending.
There's about 15 metres of cable.
Any thoughts would be much appreciated. Unfortunately, at the present
time I'm not able to inspect the rotator. It's stuck in the horizontal
position, so I will still be able to use the antenna for low elevation
passes.
73 Clive G3CWV
Hitchin, North Hertfordshire, UK
_______________________________________________
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: 15
Date: Fri, 7 Oct 2011 18:44:52 +0000
From: B J <va6bmj@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Mars Science Laboratory Enclosed In Aeroshell
Message-ID:
<CAP7QzkN_RgHHBpObMAEkrjeCmHCNN8=+H4r9d1P6=qCM9okbUw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
http://www.nasa.gov/mission_pages/msl/news/msl20111005.html
http://www.nasa.gov/mission_pages/msl/multimedia/gallery/pia14755.html
http://www.nasa.gov/mission_pages/msl/multimedia/gallery/pia14756.html
http://www.nasa.gov/mission_pages/msl/multimedia/gallery/pia14757.html
http://www.nasa.gov/mission_pages/msl/multimedia/gallery/pia14758.html
More pictures at:
http://www.nasa.gov/mission_pages/msl/multimedia/gallery/gallery-index.html
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
_______________________________________________
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 555
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