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CX2SA > SATDIG 16.05.13 20:02l 249 Lines 8868 Bytes #999 (0) @ WW
BID : AMSATBB8160
Read: GUEST
Subj: AMSAT-BB-digest V8 160
Path: IZ3LSV<IK2XDE<ON4HU<CX2SA
Sent: 130516/1902Z @:CX2SA.SAL.URY.SA #:6294 [Salto] FBB7.00e $:AMSATBB8160
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. (no subject) (Frank Staffa Jr.)
2. Re: ISS HamTV Frequencies (range gain) (Fabio Azzarello)
3. Re: AO-27 (Peter Portanova)
4. Re: Help Regarding working of RCI SE (Nitin Muttin)
5. current keps satpc32 (Bob- W7LRD)
6. (no subject) (Frank Staffa Jr.)
----------------------------------------------------------------------
Message: 1
Date: Wed, 15 May 2013 11:25:59 -0700 (PDT)
From: "Frank Staffa Jr." <kb2cwn@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] (no subject)
Message-ID:
<1368642359.28412.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hello everyone. I am very new at this and I am trying to find as much info
as I can. Does anyone know the status of AO-27? I can not find anywhere
whether its operating as an FM satellite? I just received my new Arrow II
antenna, and hope to meet you guys on the FM sats! Best 73KB2CWN
------------------------------
Message: 2
Date: Thu, 16 May 2013 12:03:23 +0200
From: Fabio Azzarello <iz5xrc@xxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ISS HamTV Frequencies (range gain)
Message-ID:
<CAHOPMN3y7gmYAnzd6xQc4EA3Vw7Mo1XocCGYsx5RxWPrpAVN1g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi all,
1 or 2 degree per second is an educated guess for almost all passes.
If the pass is "over head" the speed will increase up to 4/5 degree per
second (as maximum value), such a speed is not achievable by all rotators.
Hope that helps,
73s
Fabio
IZ5XRC
www.amsat.it
On Mon, May 13, 2013 at 2:52 PM, Robert Bruninga <bruninga@xxxx.xxx> wrote:
> One needs to also realize duration. The time say above 70 degree
> elevation (where rates are highest) are less than 2% of the total pass
> times. Not worth worrying about. Similarly, a LEO satellite spends 70%
> of its time below about 22 degrees. (but it is far away and needs max
> gain). So simply design for the best operation for most of the time when
> the link will work.
>
> Remember, the satellite is 3000 km away on the horizon and very weak, but
> as it gets into say 1500 km it is twice as close and 4 times (6 dB)
> stonger which is a heck of a lot of gain. When it goes directly overhead
> it is another 6 dB closer which is more than *ten* times the signal on the
> horizon, so don't worry about the 2% of the time it is going to be above
> 70 degrees. The signa is 10 times stronger and easy to deal with.
>
> Bob, WB4APR
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of Art McBride
> Sent: Monday, May 13, 2013 12:44 AM
> To: 'Roger'; amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: ISS HamTV Frequencies
>
> Roger,
> A SWAG, (Wild Guess) 1 degree per second at a Zenith of 90 degrees.
> Anything less than 90 degrees will be slower with several minutes spent
> near the horizon. You can use an orbital program to get exact numbers.
> With a wide beam width antenna, the lag overhead may never require the
> antenna to move with the object, as there will be time for the antenna
> system to catch up after passing overhead.
> Art,
> KC6UQH
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of Roger
> Sent: Sunday, May 12, 2013 2:34 PM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: ISS HamTV Frequencies
>
> Anybody off the top of their heads know how many degrees a second swing
> are (is?) required for direct aim at the ISS? I know there are beam width
> tolerances, altitude variations and degree above horizon variations but
> I'm looking at Bob B's fixed antenna aiming of 15-20 degrees above horizon
> to evaluate swinging a dish without torque eating up the drive train...
>
> Roger
> WA1KAT
> On 5/12/2013 5:01 PM, M5AKA wrote:
> > The AMSAT-UK page at
> > http://amsat-uk.org/2013/05/12/hamtv-from-the-iss/
> provides the links, they are:
> >
> > Facebook https://www.facebook.com/Hamtvproject
> >
> > More information at
> > http://www.amsat.it/Amsat-Italia_HamTV_brochure.pdf
> > and http://www.amsat.it/Amsat-Italia_HamTV.pdf
> >
> > The HamTV.pdf gives the link budget, looks like there's 7dB of
> coax/connector losses to overcome between the ISS transmitter and the
> antenna. That document indicates a 90cm dish should be sufficient.
> >
> > I believe that it's going up on ATV 4 which is currently slated for
> > June
> 5.
> >
> > 73 Trevor M5AKA
> >
> >
>
> _______________________________________________
> 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
> _______________________________________________
> 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, 16 May 2013 08:21:38 -0400
From: "Peter Portanova" <wb2oqq@xxxxxxx.xxx>
To: "Frank Staffa Jr." <kb2cwn@xxxxx.xxx>, <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-27
Message-ID: <8353820414494B80A4E8CB1CB62E0222@xxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Hello Frank,
Welcome to the exciting world of Amateur Satellites, this BB is an excellent
source for exchanging satellite ideas, setting up schedules for satellite
contacts and making friends! AO-27 is currently not operational, the team
is having problems with it's bootloader program, it keeps crashing, you can
visit, http://www.ao27.org/AO27/, to see any progress with the satellite,
you can also view all activity with satellites, http://oscar.dcarr.org/,
with this site, have fun.
73 Pete
WB2OQQ
------------------------------
Message: 4
Date: Thu, 16 May 2013 19:16:52 +0800 (SGT)
From: Nitin Muttin <vu3tyg@xxxxx.xx.xx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Help Regarding working of RCI SE
Message-ID:
<1368703012.9821.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
?
Aayush,
?
Are you using this with?the centronics port on your PC.
?
73
Nitin [VU3TYG]
------------------------------
Message: 5
Date: Thu, 16 May 2013 15:17:51 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] current keps satpc32
Message-ID:
<716431433.925937.1368717470999.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxxx
xx.xxx>
Content-Type: text/plain; charset=utf-8
Hello..how often are new keps added to the download list in Satpc32? I
assume the ones of interest would be in the amateur.txt file. Perhaps Eric
can make it such that when new keps are downloaded the the ones that were
manually put in are not deleted. Or can the manually inserted keps be put in
a file that is not affected by downloaded process? Thanks from the digitally
challenged.
73 Bob W7LRD
------------------------------
Message: 6
Date: Thu, 16 May 2013 10:44:34 -0700 (PDT)
From: "Frank Staffa Jr." <kb2cwn@xxxxx.xxx>
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] (no subject)
Message-ID:
<1368726274.28051.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Wow, you guys have been great, and thanks for all the replies! ?Although I
have had my ticket for over 27 years, satellites are new to me, and your
advise and help is greatly appreciated! ?Sorry to hear AO-27 isn't working,
and that SO-50 is the only FM satellite that's operational at the moment.
Looks like I decided to get into this aspect of the hobby a little late, and
missed out on the other decayed satellites, and all the great contacts to
Col. Wheelock back when he was on the ISS. I hope the near future will bring
back into space some new FM satellites, and I will look into the SSB
Satellites soon. At the moment, I don't have a all mode VHF/UHF rig, but
maybe in the near future I'll be able to obtain one so I can expand my
horizons even further with out hobby.Best 73 to all and again, thanks for
being so inviting and helpful!FrankKB2CWNEL88QLFlorida
------------------------------
_______________________________________________
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 8, Issue 160
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