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CX2SA > SATDIG 16.07.12 21:17l 366 Lines 11637 Bytes #999 (0) @ WW
BID : AMSATBB7224
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Subj: AMSAT-BB-digest V7 224
Path: IZ3LSV<IQ5KG<IK1NHL<CX2SA
Sent: 120716/1909Z @:CX2SA.SAL.URY.SA #:63168 [Salto] FBB7.00e $:AMSATBB7224
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Mode S? (Bob DeVarney W1ICW)
2. Re: Mode S? (Andrew Glasbrenner)
3. FYI - The deadline for submissions for the next AMSAT Journal
is July 23 (Douglas Quagliana)
4. Re: Mode S? (Bob- W7LRD)
5. ZACUBE-1 Mode L/S Transponder (Trevor .)
6. ao-7 antennas for portable use (Lizeth Norman)
7. Re: ao-7 antennas for portable use (JoAnne Maenpaa)
8. SO-50 (Jim Adams)
9. Final Call for Papers--2012 ARRL/TAPR Digital
CommunicationsConference (Ford, Steve, WB8IMY)
10. Max Range Sat Contacts - Question (Thomas Doyle)
11. If you can't get enough Bob Bruninga (Thomas Doyle)
----------------------------------------------------------------------
Message: 1
Date: Sun, 15 Jul 2012 19:52:42 -0400
From: Bob DeVarney W1ICW <we1u@xxxxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Mode S?
Message-ID: <500357CA.7010101@xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Are there any satellites still transmitting on Mode S?
I still have my Mode S setup on the tower from the AO-40 days, and to
would be nice to check it out to see if it still works.. I guess I could
go snooping for cordless phones in the neighborhood, but I'd prefer to
check it out with something of a ham nature.
73 de W1ICW
------------------------------
Message: 2
Date: Sun, 15 Jul 2012 20:34:03 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
To: "we1u@xxxxxxxxxxx.xxxx <we1u@xxxxxxxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Mode S?
Message-ID: <1EF6FD1C-C5B5-4166-91DD-F9DB5C9F47E4@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Not at the moment, but At least one of the satellites on the next Dnepr
launch has a U/S capability.
73, Drew KO4MA
Sent from my iPhone
On Jul 15, 2012, at 7:52 PM, Bob DeVarney W1ICW <we1u@xxxxxxxxxxx.xxx> wrote:
> Are there any satellites still transmitting on Mode S?
>
> I still have my Mode S setup on the tower from the AO-40 days, and to
would be nice to check it out to see if it still works.. I guess I could go
snooping for cordless phones in the neighborhood, but I'd prefer to check it
out with something of a ham nature.
>
> 73 de W1ICW
> _______________________________________________
> 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: Sun, 15 Jul 2012 23:12:31 -0400 (EDT)
From: Douglas Quagliana <dquagliana@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] FYI - The deadline for submissions for the next
AMSAT Journal is July 23
Message-ID: <8CF3117F90C5E59-918-C30F@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
As a friendly reminder, we are approaching the deadline for article
submissions
for the next issue of the AMSAT Journal. Please finish your articles
and submit
them to journal@xxxxx.xxx by July 23.
Thanks and 73,
Douglas KA2UPW/5
------------------------------
Message: 4
Date: Mon, 16 Jul 2012 07:08:54 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: we1u@xxxxxxxxxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Mode S?
Message-ID:
<2117842121.126983.1342422534540.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxx
xxx.xxx>
Content-Type: text/plain; charset=utf-8
Hi Bob...maybe someday we will?have some mode S stuff...the last time was on
AO-51 before the battery problems...I have a small portable -35dbm sig gen
that I can use to play with my various downconverters and dishes.? Yes AO-40
sobsob.
73
Bob W7LRD
----- Original Message -----
From: "Bob DeVarney W1ICW" <we1u@xxxxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Sunday, July 15, 2012 4:52:42 PM
Subject: [amsat-bb] Mode S?
Are there any satellites still transmitting on Mode S?
I still have my Mode S setup on the tower from the AO-40 days, and to
would be nice to check it out to see if it still works.. I guess I could
go snooping for cordless phones in the neighborhood, but I'd prefer to
check it out with something of a ham nature.
73 de W1ICW
_______________________________________________
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: 5
Date: Mon, 16 Jul 2012 11:24:56 +0100 (BST)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ZACUBE-1 Mode L/S Transponder
Message-ID:
<1342434296.37422.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
One of the mission objectives of ZACUBE-1 is a 115200 bps L-Band to S-band
data transponder.
See http://www.uk.amsat.org/8930
73 Trevor M5AKA
AMSAT-UK International Space Colloquium Sept. 15-16
http://www.uk.amsat.org/colloquium/twelve
AMSAT-UK News on Twitter: http://twitter.com/AMSAT_UK
----
------------------------------
Message: 6
Date: Mon, 16 Jul 2012 08:34:43 -0400
From: Lizeth Norman <normanlizeth@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ao-7 antennas for portable use
Message-ID:
<CAJUhCTMZ3HohcF8DBPTi6-97u=7EYC80Eccq85iwGSC3F29Ndw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi all!
Just wanted some comments as to what ops are using for AO-7 portable.
More importantly, some info on how they perform near loss of signal.
Pictures of antenna arrays would be greatly appreciated.
Norm n3ykf
------------------------------
Message: 7
Date: Mon, 16 Jul 2012 07:58:47 -0500
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ao-7 antennas for portable use
Message-ID: <000f01cd6352$bead50f0$3c07f2d0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Hi Norm,
You asked about ...
> Pictures of antenna arrays would be greatly appreciated
Bill, OM3BD posted photos about their AO-7 setup when he and Wyatt, AC0RA
set the new distance record on that satellite. Here is the link to Bill's
web page:
http://www.qsl.net/nz5n/AO7record.htm
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
------------------------------
Message: 8
Date: Mon, 16 Jul 2012 09:34:17 -0600
From: Jim Adams <jim9251@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] SO-50
Message-ID:
<CAD6RR8ib6YpHHv7gAHCH9D5mBeZRFmYWODwK364OvfZCM8nfjA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Does anyone have a recording of the July 16, 2012 0230z SO-50 pass? I made
several contacts but my recorder didn't work. Thanks.
Jim - K0BAM
------------------------------
Message: 9
Date: Mon, 16 Jul 2012 13:56:59 -0400
From: "Ford, Steve, WB8IMY" <wb8imy@xxxx.xxx>
To: "RTTY Reflector" <rtty@xxxxxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>,
<vhf@xxxx.xxxxxxxx.xxx>, <psk31@xxxxxxx.xx.xxx.xx>,
<digitalradio@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Final Call for Papers--2012 ARRL/TAPR Digital
CommunicationsConference
Message-ID:
<145372871023544E98881538F29B1DFC0471759C@xxxxxxxx.xxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Technical papers are solicited for presentation at the 31st Annual ARRL
and TAPR Digital Communications Conference to be held September 21-23,
2012 in Atlanta, Georgia. These papers will also be published in the
Conference Proceedings (you do NOT need to attend the conference to have
your paper included in the Proceedings). The submission deadline is July
31, 2012. Please send papers to:
Maty Weinberg
ARRL
225 Main St
Newington, CT 06111
...or you can make your submission via e-mail to: maty@xxxx.xxx
Papers will be published exactly as submitted and authors will retain
all rights.
73 . . . Steve, WB8IMY
ARRL
------------------------------
Message: 10
Date: Mon, 16 Jul 2012 13:38:56 -0500
From: Thomas Doyle <tomdoyle1948@xxxxx.xxx>
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] Max Range Sat Contacts - Question
Message-ID:
<CAHnRQRLCROdrk32uED0BNer-JTzKogQg7Z0V6+d0NhsXtp2tCw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
The recent record contact between OM3BD and AC0RA peaked my interest
in the subject. Congratulations and thanks to both of them. Stuff like this
gets even old geezers like me excited.
This is slightly technical and there is a question.
I was testing my pass prediction program and found that my program indicated
that a contact between my location and JO41KW was not possible. I use
JO41KW since it is sort of on the edge and DK1TB lives there. I checked
and found that SatPC32 indicated that a contact was possible using FO-29.
I knew that nothing could be wrong with SatPC32 so I dug a little deeper.
You may know this but FO-29 is a little different than most of the other LEO
satellites. It has a very high eccentricity compared to the rest of the fleet.
To try and speed up my calculations I was calculating the diameter of
the coverage circle and comparing it to the distance between the two
locations.
If the distance between the stations was longer than the coverage circle
diameter I dumped it. This worked fine for everything but FO-29. With the
current LEO sats it is easy to forget about eccentricity. There is a
difference
between the minimum and maximum coverage circle diameter of 910 miles
for FO-29. By comparison AO-27 has only a 67 mile variation.
QUESTION:
This eccentricity might result in a longer delay between good passes for
max range contacts. You need the satellite to be in the right spot and
at the max altitude to get a max range contact. The unknown at this point
is the effect of inclination. It seems as if a satellite with a very
low inclination
and stations are located at high latitudes could result in a condition where a
contact would not be possible even though the distance between them
is within the coverage circle diameter. With the speed of our present
computers
and the simplicity of the calculations it is easy to just brute force
it and check
to see if contacts are possible but I wonder if anyone has looked at the
effect
of inclination and station latitude on max range.
------------------------------------------------------------------------------
--------------------------
AO-27 Min Elev: 0 Coverage Circle Diameter (Miles): 3756.9 To 3823.1
Location1 Lat: 43.104167 Long: -89.458333 Grid: EN53GC
Location2 Lat: 51.937500 Long: 8.875000 Grid: JO41KW
Distance between locations (Miles): 4270.3
Contact theoretically not possible using AO-27
Theoretically possible using:
AO-07 Coverage Circle Diameter (Miles): 4896.0 To 4932.4
FO-29 Coverage Circle Diameter (Miles): 3814.7 To 4724.8
------------------------------------------------------------------------------
---------------------------
73 W9KE Tom Doyle
------------------------------
Message: 11
Date: Mon, 16 Jul 2012 13:43:37 -0500
From: Thomas Doyle <tomdoyle1948@xxxxx.xxx>
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] If you can't get enough Bob Bruninga
Message-ID:
<CAHnRQRKFA+yRXZMcyWNExh4FarPH2js=fh-VYvBdUDT6pG=41g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Very interesting article by Bob on page 41 of the August 2012 QST.
73 W9KE Tom Doyle
------------------------------
_______________________________________________
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 7, Issue 224
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