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CX2SA > SATDIG 12.12.10 22:03l 737 Lines 20171 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: LF Satellite ideas? (Matthias Bopp)
2. Re: LF Satellite ideas? (Alan P. Biddle)
3. www.amsat.org.uk/iaru (GRAHAM SHIRVILLE)
4. HO-68 Schedule 12-19 Dec 2010 (Alan Kung)
5. Re: LF Satellite ideas? 160m? (Bob Bruninga )
6. Power connector for Landwehr preamp? (Bill Dzurilla)
7. Re: LF Satellite ideas? (Douglas Quagliana)
8. Re: LF Satellite ideas? (Charles Suprin)
9. timing (Jack Barbera)
10. FT 847 for sale - EBay (Ted)
----------------------------------------------------------------------
Message: 1
Date: Sun, 12 Dec 2010 13:03:42 +0100
From: "Matthias Bopp" <matthias.bopp@xxx.xx>
Subject: [amsat-bb] Re: LF Satellite ideas?
To: "'GRAHAM SHIRVILLE'" <g.shirville@xxxxxxxxxx.xxx>,
<amsat-bb@xxxxx.xxx>
Message-ID: <DB340E05F8FE469ABB82270E9CD05FF5@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Sorry Graham that misspelled your name in the last mail.
Have a nice Sunday
Matthias
www.dd1us.de
-----Urspr?ngliche Nachricht-----
Von: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx Im
Auftrag von Matthias Bopp
Gesendet: Sonntag, 12. Dezember 2010 12:30
An: 'GRAHAM SHIRVILLE'; amsat-bb@xxxxx.xxx
Betreff: [amsat-bb] Re: LF Satellite ideas?
Hi Grahma,
I like your idea ... to receive signals at VLF which cannot be heard on the
ground and convert them to a frequency band which we can receive ... I guess
this will allow us to receive some "sounds from space" which we are
otherwise blocked from ...
Best regards
Matthias
www.dd1us.de
-----Urspr?ngliche Nachricht-----
Von: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx Im
Auftrag von GRAHAM SHIRVILLE
Gesendet: Sonntag, 12. Dezember 2010 09:52
An: amsat-bb@xxxxx.xxxx John Magliacane
Betreff: [amsat-bb] Re: LF Satellite ideas?
Hi Bob,
If the ionosphere screens all the terrestrial signals at that height then
maybe your 136kHz RX could be used to listen to radiation received from
outer space at that frequency which normally we cannot listen to on earth.
Sound like?fundamental?research to me but maybe it has?already?been done and
redone.
73
GrahamG3VZV
--- On Sun, 12/12/10, John Magliacane <kd2bd@xxxxx.xxx> wrote:
From: John Magliacane <kd2bd@xxxxx.xxx>
Subject: [amsat-bb] Re: LF Satellite ideas?
To: amsat-bb@xxxxx.xxx
Date: Sunday, 12 December, 2010, 2:13
--- On Sat, 12/11/10, Bob Bruninga <bruninga@xxxx.xxx> wrote:
> Is 137 KHz possible from space?
Bob,
My understanding is that LF and VLF emissions of terrestrial origin don't
get beyond the 'D' layer, even at night.? In fact, the 'D' layer acts as a
reflector, rather than an attenuator at these frequencies.? Cosmic
background radiation maintains sufficient 'D' layer ionization at night.
However, your post reminded me of project INSPIRE, which was a plan to
transmit VLF signals from the Space Shuttle back in 1992 using a pulsed
electron gun in the payload bay.? Details on project INSPIRE can be found
here:
? ? ? ? ? http://theinspireproject.org/index.php?page=faq
I'm not sure how this would penetrate the ionosphere except through brute
force.
Nevertheless, compatible receivers are simple to build and readily
available.
73, de John, KD2BD
--
Visit John on the Web at:
??? http://kd2bd.ham.org/
? ? ?
_______________________________________________
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: 2
Date: Sun, 12 Dec 2010 06:38:06 -0600
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] Re: LF Satellite ideas?
To: "'Jeff Yanko'" <wb3jfs@xxx.xxx>, "'Bob Bruninga '"
<bruninga@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <8FE542A2AF264134ABEBCAA64182C28B@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Running a long conductor at high speeds through even a week magnetic field
produces some impressive voltages. It has been proposed as a way to convert
kinetic energy to electrical power, and run in reverse to provide a method
to reboost spacecraft. Lots of theoretical and experimental studies on that
aspect.
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Jeff Yanko
Sent: Sunday, December 12, 2010 5:26 AM
To: Bob Bruninga ; amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: LF Satellite ideas?
Hi all,
A 1100 meter long antenna attached to a satellite moving through a very thin
atmosphere would be interesting. My concern would be the static build up of
energy on the antenna leading back to the satellite. I would think it this
would fry any circuitry in the satellite. If I recall correctly didn't one
of the shuttle mission have a problem of static build up on along tether and
had to give up on the experiment?
73,
Jeff WB3JFS
----- Original Message -----
From: "Bob Bruninga " <bruninga@xxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Saturday, December 11, 2010 11:13 AM
Subject: [amsat-bb] LF Satellite ideas?
> Is 137 KHz possible from space?
>
> Our next Cubesat will have a 1100 meter long antenna (think tether
> satellite). It will ultimatelly be an electrodynamic tether but the first
> one will have NO ACTIVE ELECTRONICS connected to the tether.
>
> So I have asked them to make it 1100m long instead of a generic 1km tether
> to try to make it resonant in an amateur band. THe path loss at 137 KHz
> is 60 dB LESS than it is at 2 meters, so it shouldn't take much to
> communicate with an 1100m long antenna.
>
> I'm sorry I didnt think of this sooner, but I need a real SCIENCE
> justification for this. Maybe LF that low will never punch through the
> ionosphere, or maybe it will be completely absorbed. Can give good
> science on this idea?
>
> Bob, WB4APR
>
> _______________________________________________
> 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: Sun, 12 Dec 2010 12:42:36 +0000 (GMT)
From: GRAHAM SHIRVILLE <g.shirville@xxxxxxxxxx.xxx>
Subject: [amsat-bb] www.amsat.org.uk/iaru
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Message-ID: <395646.8389.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Hi All,
Apologies but the administrator of this website has advised me that it will
be down for the next 2 or 3 days.
This site is used to maintain the list of satellite ?projects which have
requested frequency coordination from the IARU Panel.
We expect normal service to be resumed shortly!
73
Graham
G3VZV
------------------------------
Message: 4
Date: Sun, 12 Dec 2010 23:28:19 +0800
From: "Alan Kung" <alankung@xxxxxxx.xxx.xxx.xx>
Subject: [amsat-bb] HO-68 Schedule 12-19 Dec 2010
To: <amsat-bb@xxxxx.xxx>
Message-ID: <0D469DB548314E50AFC3B031B097ECDA@xxxxxxxxxxxxx>
Content-Type: text/plain; charset="gb2312"
UTC:
12 Dec 2010
================================
17:15...Turn On--FM/PACSAT
India, Africa, Middle East,
Europe,NA
18:00...Turn Off
19:00...Turn On--FM/PACSAT
NA,East Asia,Oceania
19:45...Turn Off
20:30...Turn On--FM/PACSAT
Africa,Middle East,Europe,NA
21:15...Turn Off
23:10...Turn On--FM/PACSAT
NA,North Asia,East Asia,
Oceania
23:55...Turn Off
13 Dec 2010
================================
02:47...Turn On--FM/PACSAT
North Asia, East Asia,South Asia
03:01...Turn Off
13:45...Turn On--FM/PACSAT
NA, South America
14:30...Turn Off
17:00...Turn On--FM/PACSAT
India,Middle East,Europe,NA
17:45...Turn Off
18:30...Turn On--FM/PACSAT
India,Middle East,Europe,NA
19:15...Turn Off
22:50...Turn On--FM/PACSAT
NA,East Asia,Oceania
23:35...Turn Off
14 Dec 2010
=================================
02:40...Turn On--FM/PACSAT
North Asia,East Asia,South Asia
02:55...Turn Off
10:45...Turn On--FM/PACSAT
NA,East Asia,Oceania
11:30...Turn Off
13:30...Turn On--FM/PACSAT
Europe,NA,South America
14:15...Turn Off
16:40...Turn On--FM/PACSAT
India, Africa,Europe,NA
South America
17:25...Turn Off
18:30...Turn On--FM/PACSAT
Africa,Middle East,Europe,NA
19:15...Turn Off
19:55...Turn On--FM/PACSAT
Africa,Middle East,Europe,NA
20:40...Turn Off
15 Dec 2010
=================================
00:25...Turn On--FM/PACSAT
North Asia,East Asia,South Asia
01:10...Turn Off
02:18...Turn On--FM/PACSAT
North Asia,East Asia,South Asia
02:34...Turn Off
12:43...Turn On--FM/PACSAT
North Asia,East Asia,South Asia
12:57...Turn Off
13:10...Turn On--FM/PACSAT
Europe,NA,South America
13:55...Turn Off
16:25...Turn On--FM/PACSAT
Africa,India,Middle East
Europe,NA
17:10...Turn Off
18:15...Turn On--FM/PACSAT
Africa,Europe,NA
19:00...Turn Off
19:40...Turn On--FM/PACSAT
Africa,Europe,NA
20:25...Turn Off
16 Dec 2010
================================
00:05...Turn On--FM/PACSAT
Oceania,Asia,Europe,NA
00:50...Turn Off
02:01...Turn On--FM/PACSAT
North Asia,East Asia,South Asia
02:17...Turn Off
14:45...Turn On--FM/PACSAT
Europe, NA,South America
15:30...Turn Off
16:05...Turn On--FM/PACSAT
India,Africa,Europe,NA
16:50...Turn Off
17:55...Turn On--FM/PACSAT
India,Africa,Europe,NA
18:40...Turn Off
19:25...Turn On--FM/PACSAT
Africa,Europe,NA
20:10...Turn Off
17 Dec 2010
================================
23:55...Turn On--FM/PACSAT
NA,North Asia, Oceania
00:40...Turn Off
01:48...Turn On--FM/PACSAT
North Asia,East Asia,South Asia
02:03...Turn Off
12:40...Turn On--FM/PACSAT
Europe, NA,South America
13:25...Turn Off
17:40...Turn On--FM/PACSAT
Africa,Europe,NA
18:25...Turn Off
19:20...Turn On--FM/PACSAT
India,Africa,Europe,NA
20:05...Turn Off
20:55...Turn On--FM/PACSAT
Africa,Europe,NA
21:40...Turn Off
18 Dec 2010
================================
23:30...Turn On--FM/PACSAT
North Asia,East Asia,
South Asia,Oceania
00:15...Turn Off
01:23...Turn On--FM/PACSAT
North Asia,East Asia,South Asia
Oceania
01:38...Turn Off
14:10...Turn On--FM/PACSAT
Europe,NA,South America
14:55...Turn Off
17:25...Turn On--FM/PACSAT
Africa,Europe,NA
18:10...Turn Off
19:10...Turn On--FM/PACSAT
India,Africa,Europe,NA
19:55...Turn Off
20:35...Turn On--FM/PACSAT
Africa,Europe,NA
21:20...Turn Off
23:15...Turn On--FM/PACSAT
North Asia,East Asia,
South Asia,Oceania
24:00...Turn Off
19 Dec 2010
================================
01:12...Turn On--FM/PACSAT
North Asia,East Asia,South Asia
Oceania
01:20...Turn Off
13:55...Turn On--FM/PACSAT
Europe,NA,South America
14:40...Turn Off
73
Alan Kung, BA1DU
HO-68(XW-1) Project Manager
www.camsat.cn
------------------------------
Message: 5
Date: Sun, 12 Dec 2010 10:51:15 -0500 (EST)
From: "Bob Bruninga " <bruninga@xxxx.xxx>
Subject: [amsat-bb] Re: LF Satellite ideas? 160m?
To: "GRAHAM SHIRVILLE" <g.shirville@xxxxxxxxxx.xxx>,
amsat-bb@xxxxx.xxxxxxxxxx Magliacane" <kd2bd@xxxxx.xxx>
Message-ID: <20101212105115.AGV65963@xxxxx.xxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Drats. Bad news.. Good news!
Bad news: I was thinking that maybe 137KHz would leak through the
ionosphere straight up, but then just realized that this is a tether
satellite, so the antenna is VERTICAL! Thus, a null straight down.
So maybe the only application then is to use it as a receive antenna and
LISTEN to the aliens (galactic noise on 137 Khz).
But still with a path loss that is a million times less than on 2 meters, it
would seem that something terrestrial could be easily heard.
GOOD NEWS? Woaha? How about this. Use the 1.1km vertical long wire as a 10
wavelength end fed on the 160m band and the lobes point more downward!? The
gain there would about 10 dB and the path loss is still 40 dB better than on
2m.
So if we can hear a 1W amsat on 2m, then we should be able to hear a 1
milliwatt transmitter on 160m with 20 dB stronger signal! (Of course noise
level can easily be 20 dB stronger?)
I really don't know enough about 160m to go further. Gotta start reading...
Bob, WB4APR
---- Original message ----
>Date: Sun, 12 Dec 2010 08:52:26 +0000 (GMT)
>From: amsat-bb-bounces@xxxxx.xxx (on behalf of GRAHAM SHIRVILLE
<g.shirville@xxxxxxxxxx.xxx>)
>Subject: [amsat-bb] Re: LF Satellite ideas?
>To: amsat-bb@xxxxx.xxxxxxxx Magliacane <kd2bd@xxxxx.xxx>
>
>Hi Bob,
>If the ionosphere screens all the terrestrial signals at that height then
maybe your 136kHz RX could be used to listen to radiation received from
outer space at that frequency which normally we cannot listen to on earth.
>Sound like?fundamental?research to me but maybe it has?already?been done
and redone.
>73
>GrahamG3VZV
>
>--- On Sun, 12/12/10, John Magliacane <kd2bd@xxxxx.xxx> wrote:
>
>From: John Magliacane <kd2bd@xxxxx.xxx>
>Subject: [amsat-bb] Re: LF Satellite ideas?
>To: amsat-bb@xxxxx.xxx
>Date: Sunday, 12 December, 2010, 2:13
>
>--- On Sat, 12/11/10, Bob Bruninga <bruninga@xxxx.xxx> wrote:
>
>> Is 137 KHz possible from space?
>
>Bob,
>
>My understanding is that LF and VLF emissions of terrestrial origin don't
get beyond the 'D' layer, even at night.? In fact, the 'D' layer acts as a
reflector, rather than an attenuator at these frequencies.? Cosmic
background radiation maintains sufficient 'D' layer ionization at night.
>
>However, your post reminded me of project INSPIRE, which was a plan to
transmit VLF signals from the Space Shuttle back in 1992 using a pulsed
electron gun in the payload bay.? Details on project INSPIRE can be found
here:
>
>? ? ? ? ? http://theinspireproject.org/index.php?page=faq
>
>I'm not sure how this would penetrate the ionosphere except through brute
force.
>
>Nevertheless, compatible receivers are simple to build and readily available.
>
>
>73, de John, KD2BD
>
>--
>Visit John on the Web at:
>
>??? http://kd2bd.ham.org/
>
>
>
>? ? ?
>_______________________________________________
>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: 6
Date: Sun, 12 Dec 2010 08:08:52 -0800 (PST)
From: Bill Dzurilla <billdz.geo@xxxxx.xxx>
Subject: [amsat-bb] Power connector for Landwehr preamp?
To: amsat-bb@xxxxx.xxx
Message-ID: <269547.9886.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Anyone know of a source for the 5-pin male power connector for a Landwehr
preamp?
73, Bill NZ5N
------------------------------
Message: 7
Date: Sun, 12 Dec 2010 10:13:14 -0600
From: Douglas Quagliana <dquagliana@xxx.xxx>
Subject: [amsat-bb] Re: LF Satellite ideas?
To: Bob Bruninga <bruninga@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4D04F49A.20203@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi Bob,
I'm actually wondering if the 1100 meter long antenna would be
visible from the ground. I suppose that depends on the height of the
orbit, the width of the tether, orientation, and what color the tether
will be. Have these been determined? Viewing the tether might be an
interesting science experiment for students. Hey Bob-- Can you paint the
tether bright white?
Can you make the tether out of something that's optically reflective?
Hitting a corner reflector is difficult, but hitting a 1100 meter
reflector strip should be much easier. Just make sure you fill out all
the proper government paperwork and file all of the necessary "Notice to
Airmen" forms before shining your lights upwards. :-)
How long is the tether expected to last? The Space Shuttle windows
are only up for about a week at a time and they can get tiny
mini-craters from the micrometeorite impacts.
Douglas
Bob Bruninga wrote:
> Our next Cubesat will have a 1100 meter long antenna (think tether
satellite).
>
> Bob, WB4APR
>
------------------------------
Message: 8
Date: Sun, 12 Dec 2010 12:31:40 -0500
From: Charles Suprin <hamaa1vs@xxxxx.xxx>
Subject: [amsat-bb] Re: LF Satellite ideas?
To: John Magliacane <kd2bd@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<AANLkTinUvjUL1HPjGEnjUDffaptN9Gpi_QdmTS30H3iM@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Has anyone considered the possibility of applying for an experimental
license for such an experiment?
AA1VS
On Sat, Dec 11, 2010 at 9:13 PM, John Magliacane <kd2bd@xxxxx.xxx> wrote:
> --- On Sat, 12/11/10, Bob Bruninga <bruninga@xxxx.xxx> wrote:
>
>> Is 137 KHz possible from space?
>
> Bob,
>
> My understanding is that LF and VLF emissions of terrestrial origin don't
get beyond the 'D' layer, even at night. ?In fact, the 'D' layer acts as a
reflector, rather than an attenuator at these frequencies. ?Cosmic
background radiation maintains sufficient 'D' layer ionization at night.
>
> However, your post reminded me of project INSPIRE, which was a plan to
transmit VLF signals from the Space Shuttle back in 1992 using a pulsed
electron gun in the payload bay. ?Details on project INSPIRE can be found
here:
>
> ? ? ? ? ?http://theinspireproject.org/index.php?page=faq
>
> I'm not sure how this would penetrate the ionosphere except through brute
force.
>
> Nevertheless, compatible receivers are simple to build and readily
available.
>
>
> 73, de John, KD2BD
>
> --
> Visit John on the Web at:
>
> ? ? ? ?http://kd2bd.ham.org/
>
>
>
>
> _______________________________________________
> 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: Sun, 12 Dec 2010 11:04:58 -0800 (PST)
From: Jack Barbera <barberaalderwood@xxxxx.xxx>
Subject: [amsat-bb] timing
To: Amsat Reflector <amsat-bb@xxxxx.xxx>
Message-ID: <783943.85351.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Thanks everyone for getting back to me! I did go thru and check the settings
for
both program and they look good. There are two areas that could be the
culprits
,if the WinAos is a sperate program how do I up date the keps? the second area
is that I am 205 mtrs about sea level and could not find where to set in the
WinAos program if it is necessary/.
thanks for any help?Jack WA1ZDV
------------------------------
Message: 10
Date: Sun, 12 Dec 2010 11:48:09 -0800
From: "Ted" <k7trkradio@xxxxxxx.xxx>
Subject: [amsat-bb] FT 847 for sale - EBay
To: <amsat-bb@xxxxx.xxx>
Message-ID: <5CACEF7B188B4A0AA54F05ABF92433EF@xxxxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110621162052&ssPageName=S
TRK:MESELX:IT
Thanks, Ted, K7TRK
------------------------------
_______________________________________________
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 5, Issue 489
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