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CX2SA > SATDIG 13.11.09 22:05l 414 Lines 12697 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V4 601
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Sent: 091113/2003Z @:CX2SA.LAV.URY.SA #:17224 [Minas] FBB7.00e $:AMSATBB4601
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. SumbandilaSat SO-67 (David Barber)
2. Re: Satellites need to be open source (Luc Leblanc)
3. Leonid campaign 2009 (Luc Leblanc)
4. Yaesu 5400B Az-EL rotor controller Lamps (Vince Fiscus, KB7ADL)
5. Re: SumbandilaSat SO-67 (Patrick STODDARD (WD9EWK/VA7EWK))
6. Re: Yaesu 5400B Az-EL rotor controller Lamps (Howard Kowall)
7. Re: Yaesu 5400B Az-EL rotor controller Lamps (Alan VE4YZ)
8. Re: SumbandilaSat SO-67 (Tim - N3TL)
9. Re: AO7 (WILLIAMS MICHAEL)
10. SO-67 control (Wayne Estes)
----------------------------------------------------------------------
Message: 1
Date: Fri, 13 Nov 2009 16:26:34 -0000
From: "David Barber" <david.barber@xxxxxxxxxxxxx.xx.xx>
Subject: [amsat-bb] SumbandilaSat SO-67
To: <amsat-bb@xxxxx.xxx>
Message-ID: <6C100AC807E5414A9ABEADB749E6C102@xxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Just found the times for this weekends active periods have been published.
http://www.amsatsa.org.za/
David
G8OQW
------------------------------
Message: 2
Date: Fri, 13 Nov 2009 02:54:32 -0500
From: Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
Subject: [amsat-bb] Re: Satellites need to be open source
To: amsat-bb@xxxxx.xxx
Cc: eu-amsat@xxxxxxxxxxx.xxx
Message-ID: <4AFCCA68.8938.50E3523@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=US-ASCII
On 12 Nov 2009 at 13:02, Clint Bradford wrote:
Date sent: Thu, 12 Nov 2009 13:02:58 -0800
From: Clint Bradford <clintbrad4d@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Satellites need to be open source
To: amsat-bb@xxxxx.xxx
> >> ... Why aren't the schematics ... posted on the internet?
>
>
> I think the info IS out there. AMSAT-NA doesn't seem to be hiding
> anything.
>
If all is publicly open how ITAR seems to prevent disclosure of the very
same technology used by AMSAT-NA or anyone else! there is already
know SDR and others widely available technology very well documented....
It will be useful to see the papers issued by ITAR afficionados against
AMSAT-NA to see what they have made wrong and against ITAR rules?
They surely pointed out some inappropriate actions and the disclosure of
theses inappropriate actions will help a lot of us as many are
already transferring notes schematic data files and so on in a way to share
satellite technology between ham's.
I already received some request about DSTAR coding and DSTAR technology
information from some universities and i'm exchanging files on the
very same subject with europe can i violate ITAR or those in the US who send
me some files are they violating ITAR?
I got at a hamfest a "special" transmitter who was supposed to be a very
wide VHF transmitter but the output is made only of white noise
with hissing special effect... as usual i come up with the first conclusion
that i got another piece of scrap but pushing a bit more my
search i found it was an exciter part of a power chain apparently made on
purpose to transmit only noise... be my guess what the primary
use of this transmitter was but how many of us can stumble on some weird
piece of equipment and when making theses items available for swap
of for sale did we violate ITAR?
The disclosure of the ITAR rules apparently violated by AMSAT-NA will only
help us to see if we are on the right track or on the side one.
P.S. i got a Power Supply who come up with my unmark noise transmiter it is
a Qualidyne switching power supply model 9010E-1Z-001 SN: 70121
it is rated for 1200Watts 12V at 100amps if any one can help me finding at
least the schematic in a way to find how to switch it on. Only
the fan start when i plugged it into the AC main.
Thank's
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 3
Date: Fri, 13 Nov 2009 10:39:20 -0500
From: Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
Subject: [amsat-bb] Leonid campaign 2009
To: amsat-bb@xxxxx.xxx
Cc: eu-amsat@xxxxxxxxxxx.xxx
Message-ID: <4AFD3758.23370.35B98A@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=US-ASCII
Time to check the Navspasur Radar for some echoes.
November 10, 2009: This year's Leonid meteor shower peaks on Tuesday, Nov.
17th. If forecasters are correct, the shower should produce a
mild but pretty sprinkling of meteors over North America followed by a more
intense outburst over Asia. The phase of the Moon will be new,
setting the stage for what could be one of the best Leonid showers in years.
We're predicting 20 to 30 meteors per hour over the Americas, and as many as
200 to 300 per hour over Asia," says Bill Cooke of NASA's
Meteoroid Environment Office. "Our forecast is in good accord with
independent theoretical work by other astronomers."
The whole article can be read at:
http://science.nasa.gov/headlines/y2009/10nov_leonids2009.htm
And a nice web site on the radar receiving experiment:
http://www.itr-datanet.com/~pe1itr/navspasur.html
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 4
Date: Fri, 13 Nov 2009 09:29:05 -0700
From: "Vince Fiscus, KB7ADL" <vlfiscus@xxx.xxx>
Subject: [amsat-bb] Yaesu 5400B Az-EL rotor controller Lamps
To: amsat-bb@xxxxx.xxx
Message-ID: <5.2.1.1.2.20091113092026.00c34048@xxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Someone a while back mentioned using LED's as replacements for the meter
lamps when they burn out. Can't remember who it was. Anyway, if you're
still on the list, what value of resister did you use in series with the
LED's? I think the OEM lamps were around 14 or 15 volts.
Thanks
KB7ADL
------------------------------
Message: 5
Date: Fri, 13 Nov 2009 09:45:47 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] Re: SumbandilaSat SO-67
To: amsat-bb@xxxxx.xxx
Message-ID:
<2e18ad3e0911130845lb891a5cge85638e55a3c5e71@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi David!
> Just found the times for this weekends active periods have been published.
>
> http://www.amsatsa.org.za/
I e-mailed them when I saw the schedule, since those times did not cover
any passes for North America. Jan-Albert ZR1JAK quickly replied, saying
that this schedule is for South African passes in support of the SA AMSAT
activity weekend. He will be posting a schedule with passes for other
locations later.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 6
Date: Fri, 13 Nov 2009 10:49:59 -0600
From: "Howard Kowall" <hkowall@xxxx.xx>
Subject: [amsat-bb] Re: Yaesu 5400B Az-EL rotor controller Lamps
To: "Vince Fiscus, KB7ADL" <vlfiscus@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <001201ca6481$56a6c810$6701a8c0@xxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
The resistor value, R is given by:
R = (VS - VL) / I
VS = supply voltage
VL = LED voltage (usually 2V, but 4V for blue and white LEDs)
I = LED current (e.g. 20mA), this must be less than the maximum permitted
Here is the standard calculation
Howard
VE4ISP
----- Original Message -----
From: "Vince Fiscus, KB7ADL" <vlfiscus@xxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Friday, November 13, 2009 10:29 AM
Subject: [amsat-bb] Yaesu 5400B Az-EL rotor controller Lamps
>
>
> Someone a while back mentioned using LED's as replacements for the meter
> lamps when they burn out. Can't remember who it was. Anyway, if you're
> still on the list, what value of resister did you use in series with the
> LED's? I think the OEM lamps were around 14 or 15 volts.
>
> Thanks
> KB7ADL
>
> _______________________________________________
> 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, 13 Nov 2009 11:06:17 -0600
From: "Alan VE4YZ" <ve4yz@xxx.xxx>
Subject: [amsat-bb] Re: Yaesu 5400B Az-EL rotor controller Lamps
To: "'Vince Fiscus, KB7ADL'" <vlfiscus@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <08E07A323D7E4A5BB9E98F7E3C00E3F2@xxxxx>
Content-Type: text/plain; charset="us-ascii"
http://picasaweb.google.com/ve4yz.alan/RotatorRebuild2009#
Near the end of these images is a replacement of the lights. I found LED's
with their built in lens too focused and not creating and even illumination
across the meter. I went back to incandescent. The Source 13V 60ma with a
diode in series to reduce the light and increase its life.
If you buy LEDs in a package they usually show a Voltage/Resistance/%
illumination curve on the package. If you have an unknown bunch of LEDs you
want to use, get a variable pot, set on max, use the voltage supply from the
5400 and reduce resistance until you get the illumination you want. Then
replace the pot with an aproximate sized resistor.
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx
> [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Vince Fiscus, KB7ADL
> Sent: November 13, 2009 10:29 AM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Yaesu 5400B Az-EL rotor controller Lamps
>
>
>
> Someone a while back mentioned using LED's as replacements
> for the meter lamps when they burn out. Can't remember who it
> was. Anyway, if you're still on the list, what value of
> resister did you use in series with the LED's? I think the
> OEM lamps were around 14 or 15 volts.
>
> Thanks
> KB7ADL
>
> _______________________________________________
> 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, 13 Nov 2009 09:06:52 -0800 (PST)
From: Tim - N3TL <n3tl@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: SumbandilaSat SO-67
To: david.barber@xxxxxxxxxxxxx.xx.xxx amsat-bb@xxxxx.xxx
Message-ID: <490095.49362.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
A quick glance appears to show none of the posted passes hitting North
America. Maybe they're focusing on the AMSAT-SA Satellite Activity Weekend.
________________________________
From: David Barber <david.barber@xxxxxxxxxxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Sent: Fri, November 13, 2009 11:26:34 AM
Subject: [amsat-bb] SumbandilaSat SO-67
Just found the times for this weekends active periods have been published.
http://www.amsatsa.org.za/
David
G8OQW
_______________________________________________
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: 9
Date: Fri, 13 Nov 2009 11:24:56 -0800 (PST)
From: WILLIAMS MICHAEL <k9qho6762@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: AO7
To: amsat-bb@xxxxx.xxx
Message-ID: <89780.72042.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Greetings Tim, I always enjoy your posts.
?
If you think about it, AO7 may outlast us all. Since the batteries are no
longer an issue, and the electronics is well burnt in, I'm pretty sure
I?could ?be pushing up daisies long before AO-7 decides to go belly up.
?
Delfi-C3 was a great idea. Get rid of the weakest link.
?
As for?the issue of low power, milliwatt QSOs are not uncommon on AO7 and
VO-52.
?
73,
?
Mike (K9QHO)
------------------------------
Message: 10
Date: Fri, 13 Nov 2009 11:29:21 -0800
From: Wayne Estes <w9ae@xxxxxxx.xxx>
Subject: [amsat-bb] SO-67 control
To: amsat-bb@xxxxx.xxx
Message-ID: <4AFDB391.8010007@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
All of this weekend's scheduled SO-67 activations are when it is over
South Africa, presumably controlled by ground stations.
With an unsustainable 5W downlink we can't expect SO-67 to be activated
often in most places.
Is SO-67 capable of operating from an uploaded schedule? Or is it only
controlled in real-time?
Wayne Estes W9AE
Oakland, Oregon, USA
------------------------------
_______________________________________________
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 4, Issue 601
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