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CX2SA > SATDIG 21.05.13 21:02l 384 Lines 11726 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V8 166
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Sent: 130521/1902Z @:CX2SA.SAL.URY.SA #:6527 [Salto] FBB7.00e $:AMSATBB8166
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: AO7 Eclipse Period (Alan Cresswell)
2. Observations Which Helped Save Skylab (B J)
3. Amateur Satellites and the emergency on tornado in Oklahoma
and Texas (i8cvs)
4. WTB: U110 TV Style Rotors Computer Control (Les Rayburn)
5. Re: Experience with M2 436CP42UG (Alan)
6. Question about HamTV (Raydel Abreu Espinet)
7. Re: Question about HamTV (Graham Shirville)
8. Re: Question about HamTV (Raydel Abreu Espinet)
----------------------------------------------------------------------
Message: 1
Date: Mon, 20 May 2013 20:57:13 -0000
From: "Alan Cresswell" <alancresswell@xxxx.xx.xx>
To: "'K4FEG'" <K4FEG@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AO7 Eclipse Period
Message-ID: <6A757FD62BDB4798A216B61BDF0E74EC@xxxxxxxxx>
Content-Type: text/plain; charset="US-ASCII"
Hi Frank,
In theory I could check this pass but 13:45UTC is in the early hours of the
morning here (1:45am). The problem is that I am not sure what this will
tell you other than that A-07 switches off as it enters eclipse. This is a
low pass here (10 deg max el.) and according to me it will go into eclipse
just after my TCA. If you are looking for the exact time of eclipse I would
have to put a signal through the transponder and note the time I loose my
signal but I suspect on a low pass this may not be very accurate.
73
Alan
ZL2bx
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of K4FEG
Sent: Monday, 20 May 2013 18:00
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] AO7 Eclipse Period
Are there any of the New Zealand satellite operators that could listen
to /*AO7 on May 21, 2013 during the 13:45:50UTC pass?*/
If I am correct this will be the beginning of the satellite eclipse
period that will run until August 2, 2013.
I am not using any fancy software to track the eclipse periods so I
cannot determine if the times are accurate or not, nor if the satellite
tracking software is taking full account of all variables involved in
tracking an eclipse period on AO7.
My understanding from others is that the design of the satellite is such
that it will come up as the "first state on start-up" in Mode B. I do
not know these things to be true but the information comes from what I
consider to be reliable sources.
I am just interested in any type of satellite report from the operators
that will first access to AO7 after it has been in an eclipse period no
matter how brief. Any information will be of interest to me.
/The current mode switches on AO7 are occurring at approximately 1047UTC
everyday, I suspect that if we get any type of a total voltage loss on
the satellite that this time will change(just my opinion)./
From the projections I have been running the eclipse periods will
quickly increase in duration and they will vary during the day with
respect to the time of day over the Southern Hemisphere.
One of my goals is to try and determine, with the software available to
me, what duration of eclipse is needed to cause a "Zero Voltage Reset",
which should result in the satellite reverting to Mode B.
Any help is appreciated! Happy "Bird" watching!
73
Frank
K4FEG
EM55aj84ta
_______________________________________________
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------------------------------
Message: 2
Date: Mon, 20 May 2013 21:13:46 +0000
From: B J <va6bmj@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Observations Which Helped Save Skylab
Message-ID:
<CAP7QzkN02Z880gj02wd1+nDHW=CH4Di5DR8O7fch64Wf3Niaew@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
http://www.thespacereview.com/article/2299/1
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
Message: 3
Date: Tue, 21 May 2013 05:35:11 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Amateur Satellites and the emergency on tornado in
Oklahoma and Texas
Message-ID: <000001ce55d4$acaefd20$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="Windows-1252"
Hi All,
I am interested to know if someone in BB has used
or is using the actual Amateur Satellites during the
emergency occurred in Oklahoma and Texas because
of the actual tornado's.
We know from TV that almost 50 peoples died and if
the Amateur Satellites were used with success that will
be a useful opportunity to demonstrate worldwide to
the autorities that our satellites are useful and necessary
during the emergency.
The call letters of the Amateurs partecipating as well
the FM and linear Amateur Satellites used to help into
the emergency will be appreciated.
Thanks for any info.
73" de
i8CVS Domenico
------------------------------
Message: 4
Date: Tue, 21 May 2013 03:23:48 -0500
From: Les Rayburn <les@xxxxxxxxxxxx.xxx>
To: AMSAT Mailing List <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] WTB: U110 TV Style Rotors Computer Control
Message-ID: <519B2F14.3050805@xxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I'm in the process of acquiring a pair of U110 TV style rotors that have
been configured for use as an AZ-EL system. Currently, the rotors have
two control boxes,
which would work fine, but I'd like to improve on the setup. I've found
several projects online for controlling these with a computer, including
some using a BASIC stamp,
etc.
My homebrew days are limited these days, so I'd like to see if anyone
has a suitable controller for sale? I'm running SATPC32, and would
prefer to control the rotors using
that software if possible. If anyone has something suitable that is
surplus to your needs, please contact me directly. Thanks!
--
--
73,
Les Rayburn, N1LF
121 Mayfair Park
Maylene, AL 35114
EM63nf
6M VUCC #1712
AMSAT #38965
Grid Bandits #222
Southeastern VHF Society
Central States VHF Society Life Member
Six Club #2484
Active on 6 Meters thru 1296, 10GHz & Light
------------------------------
Message: 5
Date: Tue, 21 May 2013 06:51:33 -0500
From: Alan <wa4sca@xxxxx.xxx>
To: "'PE0SAT | Amateur Radio'" <pe0sat@xxxxx.xx>, "'Amsat bb'"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Experience with M2 436CP42UG
Message-ID: <DFB51F0141C947A1B0F5B23481D53802@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Jan,
I have one, and it works very well. The SWR, measured with a Bird wattmeter,
is 1.5 or less across the
entire satellite band. I did have to call M2 to get instructions, as the
documentation which they
provided were not correct. The new manual looks OK, and I am attaching it
to the direct email.
73s,
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of PE0SAT | Amateur
Radio
Sent: Sunday, May 19, 2013 10:07 AM
To: Amsat bb
Subject: [amsat-bb] Experience with M2 436CP42UG
Hi,
Are there people using the M2 436CP42UG for satellite operation?
If so, could you share some experience whit this Antenna?
I have bought a used one but am unable to get it aligned in the right
way
so that SWR is expectable. From the manual I get the length of the
dipole
at 4.375 inch thats 11.1cm but it isn't working in my setup and
changing it
in steps of 1mm doesn't bring me to the right SWR.
In some places the impedance is so bad that the radio disables power
output.
Thanks in advance
73 Jan PE0SAT
--
With regards PE0SAT
Internet web-page http://www.pe0sat.vgnet.nl/
_______________________________________________
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: 6
Date: Tue, 21 May 2013 11:41:30 -0400 (CDT)
From: Raydel Abreu Espinet <cm2esp@xxxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Question about HamTV
Message-ID: <3153447.1487815.1369150890526.JavaMail.root@xxxxxx.xx.xx>
Content-Type: text/plain; charset=utf-8
Hello,
About the future HamTV experiment, is it possible to use a cheap RTL DVB-T
dongles used or RTLSDR to receive such signals with proper LNA and
downconverter. If the downconversion fits the signal on a proper channel
does it device is capable of decode the transmitted format???
Thanks,
Raydel
---
------------------------------
Message: 7
Date: Tue, 21 May 2013 19:34:41 +0100
From: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
To: "Raydel Abreu Espinet" <cm2esp@xxxxxx.xx.xx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Question about HamTV
Message-ID: <1C9D58B8045749C5BB01CB8ED3AFE8B8@xxxxxxx.xxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Raydel,
I stand to be corrected but a these dongles are specified for DVB-T so I
dont think they would work for signals using DVB-S modulation.
The signals from the ISS will be at 1.3Msps or 2.0Msps - I believe that only
the Technotrend T1600 and T3200 cards have, so far, been identified as being
suitable for these very low symbol rates
http://www.technotrend.eu/2920/TT-budget__S2-1600.html
It is anticipated that more detailed info for potential ground stations will
be made available quite soon.
thanks
Graham
G3VZV
-----Original Message-----
From: Raydel Abreu Espinet
Sent: Tuesday, May 21, 2013 4:41 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Question about HamTV
Hello,
About the future HamTV experiment, is it possible to use a cheap RTL DVB-T
dongles used or RTLSDR to receive such signals with proper LNA and
downconverter. If the downconversion fits the signal on a proper channel
does it device is capable of decode the transmitted format???
Thanks,
Raydel
---
_______________________________________________
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: Tue, 21 May 2013 14:33:34 -0400 (CDT)
From: Raydel Abreu Espinet <cm2esp@xxxxxx.xx.xx>
To: Graham Shirville <g.shirville@xxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Question about HamTV
Message-ID: <6649819.1493646.1369161214268.JavaMail.root@xxxxxx.xx.xx>
Content-Type: text/plain; charset=utf-8
OK, I see,
Well, it would be out of my reach.
Thanks for the info Graham!!!
73,
Raydel
----- Mensaje original -----
De: Graham Shirville <g.shirville@xxxxxxxxxx.xxx>
Para: Raydel Abreu Espinet <cm2esp@xxxxxx.xx.xx>, amsat-bb@xxxxx.xxx
Enviado: Tue, 21 May 2013 14:34:41 -0400 (CDT)
Asunto: Re: [amsat-bb] Question about HamTV
Hi Raydel,
I stand to be corrected but a these dongles are specified for DVB-T so I
dont think they would work for signals using DVB-S modulation.
The signals from the ISS will be at 1.3Msps or 2.0Msps - I believe that only
the Technotrend T1600 and T3200 cards have, so far, been identified as being
suitable for these very low symbol rates
http://www.technotrend.eu/2920/TT-budget__S2-1600.html
It is anticipated that more detailed info for potential ground stations will
be made available quite soon.
thanks
Graham
G3VZV
------------------------------
_______________________________________________
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 166
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