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CX2SA > SATDIG 19.06.09 21:07l 284 Lines 7532 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V4 286
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Sent: 090619/1903Z @:CX2SA.LAV.URY.SA #:43903 [Minas] FBB7.00e $:43903-CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
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When replying, please edit your Subject line so it is more specific
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Today's Topics:
1. A Reminder (Martha)
2. Atlas rocket amazing (w7lrd@xxxxxxx.xxxx
3. Re: ZS2BK heard in GI84ow? (ps8rf ps8)
4. Re: Satellites operation (Julie & Stephen)
5. Phase shift keying - question (andy thomas)
6. AO-51 V/S (David - KG4ZLB)
7. Thanks - attic Antennas (john heath)
8. Re: AO-51 V/S (Luc Leblanc)
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Message: 1
Date: Thu, 18 Jun 2009 15:43:29 -0400
From: Martha <martha@xxxxx.xxx>
Subject: [amsat-bb] A Reminder
To: amsat-bb@xxxxx.xxx
Message-ID:
<956751cf0906181243u27403702k74d2b78d7fc96f55@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
To All: Please remember that AMSAT has one paid employee. So, if you order
is not filled immediately, please be patient.
--
73- Martha
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Message: 2
Date: Thu, 18 Jun 2009 21:39:50 +0000 (UTC)
From: w7lrd@xxxxxxx.xxx
Subject: [amsat-bb] Atlas rocket amazing
To: amsat-bb@xxxxx.xxx
Message-ID:
<637760959.5769871245361190424.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.
xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Hello
Just watched on TV the Altlas rocket to the moon.? As always, I'm glad to
help!
73 Bob W7LRD
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Message: 3
Date: Fri, 19 Jun 2009 02:48:42 +0300
From: ps8rf ps8 <ps8rf@xxxxxxx.xxx>
Subject: [amsat-bb] Re: ZS2BK heard in GI84ow?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BAY103-W43C8A1BD49D67BECC3F02EE03D0@xxx.xxx>
Content-Type: text/plain; charset="utf-8"
Hello Tim,
I had noticed some times when the satellite entered into "eclipse". Two months
ago I noticed the same difficulty in listening to my return. I got the comment
with some friends here in Brazil. I did a simulation and in your case (the AO-
7) he was not eclipsed. But it may be that the phenomenon of ionospheric
scintillations . This could jeopardize their receipt. I do not know how to
behave the Ionospheric scintillations in United States. But in Brazil it is
limited, based on studies it is usually an hour after sunset and runs until
midnight most frequently between September and March, but may occur with less
frequency in other periods. And coincidentally in March I had noticed a few
times some difficulty in tracking the signal of my return. It's only a
theory. According to Roland, PY4ZBZ (
http://www.qsl.net/py4zbz/satelite.htm#ao7 - very nice informations in
portuguese about satellites ) , the ionospheric scintillations can occur
anywhere. As for AO-7 seems to me very well, despite its problems.
Piraj?, PS8RF
_________________________________________________________________
Conhe?a os novos produtos Windows Live! Clique aqui.
http://www.windowslive.com.br
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Message: 4
Date: Thu, 18 Jun 2009 22:37:57 -0700 (PDT)
From: Julie & Stephen <stephen_hayman@xxxx.xx.xx>
Subject: [amsat-bb] Re: Satellites operation
To: amsat-bb@xxxxx.xxx
Message-ID: <941984.36934.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Hi all,
?
Just a kind note of thanks for the many replies, both direct and on the
website, in regards to operational Satellites.
?
Often when a person is away from the aspect?of the hobby awhile, it takes a
bit to get your head around whats active and operational.
?
I have printed out and tabulated what is available and where. The AMSAT - NA
site for orbit prediction is invaluable and priceless..
?
Thanks again,
73 - Steve ZL1TPH
------------------------------
Message: 5
Date: Fri, 19 Jun 2009 02:26:13 -0700 (PDT)
From: andy thomas <andythomasmail@xxxxx.xx.xx>
Subject: [amsat-bb] Phase shift keying - question
To: amsat <amsat-bb@xxxxx.xxx>
Message-ID: <159210.98987.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Could anyone please explain, in newbie terms, if it is possible to split a
telemetry data stream from a satellite OBC into two data streams, sent
simultaneously on two nbfm channels, each PSK with the phase difference
between them?
I have in mind a conversation which I don't fully understand, about these
being the I and Q components, and this offering a doubling of the data rate
compared with using one nbfm channel.
Grateful for any pointers on or off the -bb
many thanks
andy G0SFJ
------------------------------
Message: 6
Date: Fri, 19 Jun 2009 08:06:44 -0400
From: David - KG4ZLB <kg4zlb@xxxxxxxxxx.xxx>
Subject: [amsat-bb] AO-51 V/S
To: lucleblanc6@xxxxxxxxx.xx
Cc: amsat <amsat-bb@xxxxx.xxx>
Message-ID: <4A3B7F54.8090303@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Luc,
Sorry. In the heat of battle this morning I totally didn't recognise
your call sign but thanks for the mode V/S contact on AO-51 just a short
while ago!
73
David
KG4ZLB
--
David
KG4ZLB
www.kg4zlb.com
------------------------------
Message: 7
Date: Fri, 19 Jun 2009 15:28:18 +0100
From: "john heath" <g7hia@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Thanks - attic Antennas
To: "amsat" <amsat-bb@xxxxx.xxx>
Message-ID: <85965CF95E2B4A3090E96900EE5035ED@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Thanks to everyone who replied.
It seems that small yagis and quagis are OK in roof spaces provided that the
liner underneath the roof tiles is not metalised.
Contrary to my expectations, rain and snow on the roof doesn't cause problems.
DH5MK has some nice pictures of his attic antenna installation on his web
site.
73 John G7HIA
------------------------------
Message: 8
Date: Thu, 18 Jun 2009 09:19:37 -0400
From: Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
Subject: [amsat-bb] Re: AO-51 V/S
To: kg4zlb@xxxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4A3A06A9.25167.72EC59@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=US-ASCII
On 19 Jun 2009 at 8:06, David - KG4ZLB wrote:
> Luc,
>
> Sorry. In the heat of battle this morning I totally didn't recognise
> your call sign but thanks for the mode V/S contact on AO-51 just a short
> while ago!
>
> 73
>
> David
> KG4ZLB
>
>
> --
> David
> KG4ZLB
> www.kg4zlb.com
>
Hi David
I just notice that but when i try to explain our previous QSO'S the satellite
was below my wet roof top and it's kill all S band signal.
Since about 5 passes i'm quite alone on mode V/S but i can test my new wifi
beam and i don't know if an helix can beat it? The S band
antenna is linear on AO-51 and as far i can remember in theory using a
circular polarized antenna will induce about 3db of losses?
The fades a nearly gone on most of the pass but those remaining come from very
bad antenna pointing on the satellite.
Hope to meet you again on the LEO'S
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
WAC BASIC CW PHONE SATELLITE
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End of AMSAT-BB Digest, Vol 4, Issue 286
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