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CX2SA > SATDIG 26.10.09 06:00l 995 Lines 36063 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: ITAR is interesting to me (Bill Ress)
2. Re: Making a Circular Polarized antenna (Greg D.)
3. Which rotor control to use? (Eric Knaps, ON4HF)
4. SO-67 (Vincenzo Mone)
5. Re: Which rotor control to use? (Martin)
6. Re: ITAR is interesting to me (Greg D.)
7. Re: LVB Tracker (WILLIAMS MICHAEL)
8. Re: volunteering (Mobile Satellite Predictor) (Robert Bruninga)
9. AO-51 in V/US repeater until November 1 (Andrew Glasbrenner)
10. Re: Which rotor control to use? (George Henry)
11. Re: ITAR is interesting to me (Bill Ress)
12. Re: AO-51 in V/US repeater until November 1 (Bob- W7LRD)
13. Re: Making a Circular Polarized antenna (i8cvs)
14. KLM 22c and 40cx antennas for sale (John Hansen)
----------------------------------------------------------------------
Message: 1
Date: Sun, 25 Oct 2009 12:14:38 -0700
From: Bill Ress <bill@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: ITAR is interesting to me
To: "John P. Toscano" <tosca005@xx.xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4AE4A39E.8000006@xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi John,
The completed satellite is usually exempt. This is how AO-51, as a
completed satellite, went to Russia and was launched on a Dnepr. AMSAT
has in the past and will in the future, apply for an export license for
a satellite. It's when you try to export satellite components or
technology, like the IHU, the SDX for the P3E, or engage in dialog
regarding a satellites thermal performance the the AMSAT-DL folks to
assist them, that you run afoul of ITAR.
There's a big different between sharing technology and components than
it is to export a complete satellite for launch. Often the State Dept.
will require that a representative(s) of the satellite builders (and
sometimes the State Dept. itself) accompany the satellite at all times,
insuring that no one can get a closer look than just the outside, right
through the launch.
Yes, a bit confusing and frustrating, but workable.
Regards...Bill - N6GHz
John P. Toscano wrote:
> Bob McGwier wrote:
>> ANY aspect dealing with a satellite, software, hardware, ground stations
>> (hardware, software, protocols, etc.), ideas, random ejaculations from a
>> diseased mind or whatever that deals with spacecraft or ground stations
>> are DEEMED EXPORTS when they depart a U.S. citizen and are delivered to
>> a non-U.S. citizen. It is a nearly impossible task to abide by and one
>> that really makes me want to throw my hands up in despair and walk away.
>>
>> There are exceptions for classrooms and courses taught in U.S.
>> university's. A person, even a non-U.S. citizen, who can pay for taking
>> a course, may go and involve themselves in course work, even if it is
>> dealing with the design, construction, and control of spacecraft during
>> the course work. Some of this applies to your earlier questions but for
>> US service academies, there are very few non-U.S. citizens in them.
>
> Bob:
>
> I would not dream of second-guessing you for a moment, since you are
> fully engaged in this stuff and I am simply an interested observer.
>
> However, why doesn't the following quotation directly from the ITAR
> regulations provide the exemption we need? The quotation comes from the
> section that defines what are the items that are covered by ITAR:
>
> ITAR Part 121 - The United States Munitions List
>
> -----------------------< begin quote >-------------------------------
>
> Category XV - Spacecraft Systems and Associated Equipment
>
> *(a) Spacecraft, including communications satellites, remote sensing
> satellites, scientific satellites, research satellites, navigation
> satellites, experimental and multi-mission satellites.
>
> *NOTE TO PARAGRAPH (a): Commercial communications satellites, scientific
> satellites, research satellites, and experimental satellites are
> designated as SME only when the equipment is intended for use by the
> armed forces of any foreign country.
>
> -----------------------< end quote >---------------------------------
>
> Note that SME refers to "Significant Military Equipment"
>
> Paragraph (a) seems to cover everything and anything having to do with
> satellites, but the asterisk and "NOTE" attached to it seems to say that
> an Amateur radio satellite for use by Amateurs instead of foreign armed
> forces should be exempted, doesn't it?
>
> Granted, I realize that we have already lost one argument with ITAR
> about our past cooperation with AMSAT-DL, but is there some compelling
> reason why the lawyers didn't point out this exception?
>
> Just wondering...
> If I had to guess the answer myself, after looking at the horribly
> convoluted language of the small piece of the ITAR regulations that I
> have looked at, there is probably another paragraph elsewhere that
> effectively says, "we were just kidding when we said that it had to be
> used by foreign armed forces, we really mean it to cover everything"
>
> John
> W0JT
>
>
> _______________________________________________
> 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, 25 Oct 2009 12:45:53 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Making a Circular Polarized antenna
To: <ve4yz@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W11B804B227ACB115B965D2A9BB0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Interesting visual program! But, I don't see a way to offset the two
antennas in space, only in phase. I agree that if you put two antennas in
the same plane and 180 degrees out of phase, they will nicely cancel each
other out. But if they are offset, then the linear signals will cancel,
while a CP signal will have rotated 180 degrees in passing through that
offset, and will be in-phase at the second antenna. No?
Greg KO6TH
> From: ve4yz@xxx.xxx
> To: ko6th_greg@xxxxxxx.xxxx amsat-bb@xxxxx.xxx
> Subject: RE: [amsat-bb] Making a Circular Polarized antenna
> Date: Sat, 24 Oct 2009 20:08:49 -0500
>
> http://www.enzim.hu/~szia/emanim/emanim.htm
>
> Above link has a wonderful 3D graphic display of waves. Give it a try.
>
> You can adjust V, H, phase, and then display sum of the 2 waves.
>
> I use it mainly to show how circular polarization comes about.
>
> The sum of 2 waves in the same plane ( 180 degrees rotated ), 180 degrees
> out of phase ( 1/2 wavelength ) is a nul which probably would be out
> performed by a rubber ducky.
>
>
>
>
> > -----Original Message-----
> > From: amsat-bb-bounces@xxxxx.xxx
> > [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Greg D.
> > Sent: October 24, 2009 7:34 PM
> > To: amsat-bb@xxxxx.xxx
> > Subject: [amsat-bb] Making a Circular Polarized antenna
> >
> >
> > Hi folks,
> >
> > Just curious...
> >
> > One of the ways to make a circularly polarized antenna is to
> > feed two linearly polarized antennas in-phase, but mount one
> > them 90 degrees rotated from the other, and 1/4 wavelength
> > ahead of it.
> >
> > Couldn't one also mount the two antennas 180 degrees rotated
> > and 1/2 wavelength ahead?
> >
> > The reason I ask is that I have some flat panel 2.4 ghz
> > "Wi-Fi" antennas, and the mounting holes work out best that way.
> >
> > The only effect I can think of is that the array will
> > probably pick up signals from both left and right
> > polarizations, which could actually be handy.
> >
> > Greg KO6TH
> >
> >
> > _________________________________________________________________
> > Windows 7: It helps you do more. Explore Windows 7.
> > http://www.microsoft.com/Windows/windows-7/default.aspx?ocid=P
> > ID24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_evergreen3:102009
> > _______________________________________________
> > 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
> >
>
_________________________________________________________________
Windows 7: It works the way you want. Learn more.
http://www.microsoft.com/Windows/windows-7/default.aspx?ocid=PID24727::T:WLMTA
GL:ON:WL:en-US:WWL_WIN_evergreen2:102009
------------------------------
Message: 3
Date: Sun, 25 Oct 2009 21:01:30 +0100
From: "Eric Knaps, ON4HF" <eric.knaps@xxxxxxx.xx>
Subject: [amsat-bb] Which rotor control to use?
To: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID: <4AE4AE9A.3030601@xxxxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hello guys,
I was wondering what kind of hardware to use to control my satellite rotors.
I have the G-500A elevation rotor and the G-650C azimuth rotor.
My only com port is connected with my FT-847 for doppler correction via
HamRadioDeluxe so it must be something via the USB port.
Thanks!
Eric - ON4HF
--
Eric Knaps
Waterstraat 30
B-3980 Tessenderlo
Belgium
Tel. +32472985876 (mobile)
http://www.on4hf.be
------------------------------
Message: 4
Date: Sun, 25 Oct 2009 21:20:53 +0100
From: "Vincenzo Mone" <vimone@xxxxx.xx>
Subject: [amsat-bb] SO-67
To: "Amsat - BBs" <amsat-bb@xxxxx.xxx>
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAALgqrd2N1rRAiaQvRd7pgRDCgAAAEAAAACnqfQduXjpGr5ow/Q7+fS
kBAAAAAA==@xxxxx.xx>
Content-Type: text/plain; charset="us-ascii"
Hi to the list,
I would like to know if the SO-67 is active.
Anybody heard it?
I have just now a pass but I do not hear anything
On 435.350 Mhz.
Any help will be really appreciated.
73 de Enzo IK8OZV
EasyLog 5 BetaTester
EasyLog PDA BetaTester
WinBollet BetaTester
D.C.I. CheckPoint Regione Campania
Skype: ik8ozv8520
***************************************
***** GSM +39 338 9749786 *****
***** SMS +39 338 9749786 *****
***** FAX +39 328 7244294 *****
*** 2nd e-mail: vimone@xxx.xx ***
***************************************
------------------------------
Message: 5
Date: Sun, 25 Oct 2009 21:41:09 +0100
From: Martin <tmm@xxxxxxx.xx>
Subject: [amsat-bb] Re: Which rotor control to use?
To: AMSAT-bb@xxxxx.xxx
Message-ID: <4AE4B7E5.1010500@xxxxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi Eric
Eric Knaps, ON4HF wrote:
> Hello guys,
>
> I was wondering what kind of hardware to use to control my satellite rotors.
> I have the G-500A elevation rotor and the G-650C azimuth rotor.
> My only com port is connected with my FT-847 for doppler correction via
> HamRadioDeluxe so it must be something via the USB port.
Sorry for the off-list reply.
USB->RS232 adaptors are a penny and a dime on ebay.
73's
OZ1TMM, Martin
------------------------------
Message: 6
Date: Sun, 25 Oct 2009 14:35:45 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: ITAR is interesting to me
To: <bill@xxxxxxxxxxx.xxx>, <tosca005@xx.xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <BLU133-W914E51521B1D00C869796A9BB0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
I wonder if we could hook up with a university somewhere? Become part of
their graduate program in Astro-something, even get some graduate students
to help with the design and manufacture... What sort of restrictions do
they have on the definition of a "student"?
Just a thought,
Greg KO6TH
> Date: Sun, 25 Oct 2009 12:14:38 -0700
> From: bill@xxxxxxxxxxx.xxx
> To: tosca005@xx.xxx.xxx
> CC: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: ITAR is interesting to me
>
> Hi John,
>
> The completed satellite is usually exempt. This is how AO-51, as a
> completed satellite, went to Russia and was launched on a Dnepr. AMSAT
> has in the past and will in the future, apply for an export license for
> a satellite. It's when you try to export satellite components or
> technology, like the IHU, the SDX for the P3E, or engage in dialog
> regarding a satellites thermal performance the the AMSAT-DL folks to
> assist them, that you run afoul of ITAR.
>
> There's a big different between sharing technology and components than
> it is to export a complete satellite for launch. Often the State Dept.
> will require that a representative(s) of the satellite builders (and
> sometimes the State Dept. itself) accompany the satellite at all times,
> insuring that no one can get a closer look than just the outside, right
> through the launch.
>
> Yes, a bit confusing and frustrating, but workable.
>
> Regards...Bill - N6GHz
>
> John P. Toscano wrote:
> > Bob McGwier wrote:
> >> ANY aspect dealing with a satellite, software, hardware, ground stations
> >> (hardware, software, protocols, etc.), ideas, random ejaculations from a
> >> diseased mind or whatever that deals with spacecraft or ground stations
> >> are DEEMED EXPORTS when they depart a U.S. citizen and are delivered to
> >> a non-U.S. citizen. It is a nearly impossible task to abide by and one
> >> that really makes me want to throw my hands up in despair and walk away.
> >>
> >> There are exceptions for classrooms and courses taught in U.S.
> >> university's. A person, even a non-U.S. citizen, who can pay for taking
> >> a course, may go and involve themselves in course work, even if it is
> >> dealing with the design, construction, and control of spacecraft during
> >> the course work. Some of this applies to your earlier questions but for
> >> US service academies, there are very few non-U.S. citizens in them.
> >
> > Bob:
> >
> > I would not dream of second-guessing you for a moment, since you are
> > fully engaged in this stuff and I am simply an interested observer.
> >
> > However, why doesn't the following quotation directly from the ITAR
> > regulations provide the exemption we need? The quotation comes from the
> > section that defines what are the items that are covered by ITAR:
> >
> > ITAR Part 121 - The United States Munitions List
> >
> > -----------------------< begin quote >-------------------------------
> >
> > Category XV - Spacecraft Systems and Associated Equipment
> >
> > *(a) Spacecraft, including communications satellites, remote sensing
> > satellites, scientific satellites, research satellites, navigation
> > satellites, experimental and multi-mission satellites.
> >
> > *NOTE TO PARAGRAPH (a): Commercial communications satellites, scientific
> > satellites, research satellites, and experimental satellites are
> > designated as SME only when the equipment is intended for use by the
> > armed forces of any foreign country.
> >
> > -----------------------< end quote >---------------------------------
> >
> > Note that SME refers to "Significant Military Equipment"
> >
> > Paragraph (a) seems to cover everything and anything having to do with
> > satellites, but the asterisk and "NOTE" attached to it seems to say that
> > an Amateur radio satellite for use by Amateurs instead of foreign armed
> > forces should be exempted, doesn't it?
> >
> > Granted, I realize that we have already lost one argument with ITAR
> > about our past cooperation with AMSAT-DL, but is there some compelling
> > reason why the lawyers didn't point out this exception?
> >
> > Just wondering...
> > If I had to guess the answer myself, after looking at the horribly
> > convoluted language of the small piece of the ITAR regulations that I
> > have looked at, there is probably another paragraph elsewhere that
> > effectively says, "we were just kidding when we said that it had to be
> > used by foreign armed forces, we really mean it to cover everything"
> >
> > John
> > W0JT
> >
> >
> > _______________________________________________
> > 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
_________________________________________________________________
Windows 7: I wanted more reliable, now it's more reliable. Wow!
http://microsoft.com/windows/windows-7/default-ga.aspx?h=myidea?ocid=PID24727:
:T:WLMTAGL:ON:WL:en-US:WWL_WIN_myidea:102009
------------------------------
Message: 7
Date: Sun, 25 Oct 2009 15:12:30 -0700 (PDT)
From: WILLIAMS MICHAEL <k9qho6762@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: LVB Tracker
To: asquires@xxxxxxx.xxx.xxx amsat-bb@xxxxx.xxx
Message-ID: <673127.9109.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
I believe the?KR-500 and G1000DXC could be upgraded?for LVB control?with
some thought.
?
My LVB tracker ran an old?Wilson 500 rotor that I modified?for several years
before?it gave out and I had to upgrade to a 5500.?Since the Wilson had no
transformer (all 120 VAC), I did it with relays.
?
GL
?
Mike, K9QHO,?AMSAT 33589
------------------------------
Message: 8
Date: Sun, 25 Oct 2009 19:14:20 -0400
From: "Robert Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] Re: volunteering (Mobile Satellite Predictor)
To: "'kim'" <ac7yy@xxxxxxx.xxx>, "'amsat-bb'" <amsat-bb@xxxxx.xxx>
Message-ID: <8692AFB3D3B042C0832EEE86B5716B61@xxxxx.xxxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Kim, AC7YY has taken a survey of the APRS-IS to find out what
other areas have Satellite Tracking engines that are putting out
live satellite-objects onto the local APRS information channel.
It appears there are only two other USA systems and the rest are
overseas.
CALL LATITUDE
K3PDK-1 39?37'N 77?45'W
WD5EAE-3 32?35'N 94?48'W
YYDIGI 46?43'N 122?57'W
SP8RSL 51?18'N 21?55'E
EB1DBX 43?25'N 8?12'W
F6KLI-4 44?54'N 0?15'W
SKAGIT 48?25'N 122?19'W
LW2DVM-1 34?29'S 58?32'W
AB9FT-10 43?44'N 87?43'W
HB9MM-4 46?42'N 6?24'E
F5ZQB-3 42?43'N 1?42'E
PD2RLD-2 53?11'N 5?33'E
Where these systems run, the result is every mobile in that
area, even without any prior planning, will be alerted to any FM
satellite in view, including the frequency, uplink and downlink
plus doppler direction and range... right there on the front
panel of his APRS radio. Offering a come-as-you are capability
for any one mobile to operate when the satellite is in view.
Kim operates his system (digi_ned) on the local UHF APRS alt-net
running on 440.800Mhz at 9.6kbaud within a portion of NWAPRS
coverage area (Puget Sound). This is a great way to get other
mobiles involved in mobile satellite operation. For example,
when AO51 comes over it is easy to hear for the central few
minues of the pass when the range is indicated below 1000km. Or
when ISS comes over and is in packet mode, then a quick mobile
QSY from the APRS channel to 145.825 satellite channel allows
some packet operation.
Bob, WB4APR
------------------------------
Message: 9
Date: Sun, 25 Oct 2009 19:34:44 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] AO-51 in V/US repeater until November 1
To: Amsat-BB <amsat-bb@xxxxx.xxx>
Message-ID: <4AE4E094.4090209@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
FM Repeater, V/US
Uplink: 145.920 MHz FM
Downlink: 435.300 and 2401.200 MHz FM
Reports on the S band transmitter would be appreciated.
73, Drew KO4MA
------------------------------
Message: 10
Date: Sun, 25 Oct 2009 18:39:04 -0500
From: "George Henry" <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: Which rotor control to use?
To: "Eric Knaps, ON4HF" <eric.knaps@xxxxxxx.xx>, "amsat-bb"
<amsat-bb@xxxxx.xxx>
Message-ID: <22432B2F480542F8AE5E940C53EAB8A9@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
If you have a parallel port, the FOD-Track system uses that, instead of a
COM port....
George, KA3HSW
----- Original Message -----
From: "Eric Knaps, ON4HF" <eric.knaps@xxxxxxx.xx>
To: "amsat-bb" <amsat-bb@xxxxx.xxx>
Sent: Sunday, October 25, 2009 3:01 PM
Subject: [amsat-bb] Which rotor control to use?
> Hello guys,
>
> I was wondering what kind of hardware to use to control my satellite
> rotors.
> I have the G-500A elevation rotor and the G-650C azimuth rotor.
> My only com port is connected with my FT-847 for doppler correction via
> HamRadioDeluxe so it must be something via the USB port.
> Thanks!
>
> Eric - ON4HF
>
> --
> Eric Knaps
> Waterstraat 30
> B-3980 Tessenderlo
> Belgium
>
> Tel. +32472985876 (mobile)
>
> http://www.on4hf.be
>
> _______________________________________________
> 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: 11
Date: Sun, 25 Oct 2009 17:38:12 -0700
From: Bill Ress <bill@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: ITAR is interesting to me
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4AE4EF74.4050702@xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Greg, the same rules apply to Universities (even our military schools,
ie. West Point el al.). This continues to be a real sore spot with
University research programs on things related to satellites or any of
the areas subject to ITAR. It's get especially tricky when students,
which are foreign nationals, try to become involved.
But, as I keep saying, if you're involved with "munitions" controlled by
ITAR and many things related to satellites are, them become familiar
with the rules and follow them. If your in doubt, them become familiar
with the rules and follow them.
Regards...Bill - N6GHz
Greg D. wrote:
> I wonder if we could hook up with a university somewhere? Become part
> of their graduate program in Astro-something, even get some graduate
> students to help with the design and manufacture... What sort of
> restrictions do they have on the definition of a "student"?
>
> Just a thought,
>
> Greg KO6TH
>
>
> > Date: Sun, 25 Oct 2009 12:14:38 -0700
> > From: bill@xxxxxxxxxxx.xxx
> > To: tosca005@xx.xxx.xxx
> > CC: amsat-bb@xxxxx.xxx
> > Subject: [amsat-bb] Re: ITAR is interesting to me
> >
> > Hi John,
> >
> > The completed satellite is usually exempt. This is how AO-51, as a
> > completed satellite, went to Russia and was launched on a Dnepr. AMSAT
> > has in the past and will in the future, apply for an export license for
> > a satellite. It's when you try to export satellite components or
> > technology, like the IHU, the SDX for the P3E, or engage in dialog
> > regarding a satellites thermal performance the the AMSAT-DL folks to
> > assist them, that you run afoul of ITAR.
> >
> > There's a big different between sharing technology and components than
> > it is to export a complete satellite for launch. Often the State Dept.
> > will require that a representative(s) of the satellite builders (and
> > sometimes the State Dept. itself) accompany the satellite at all times,
> > insuring that no one can get a closer look than just the outside, right
> > through the launch.
> >
> > Yes, a bit confusing and frustrating, but workable.
> >
> > Regards...Bill - N6GHz
> >
> > John P. Toscano wrote:
> > > Bob McGwier wrote:
> > >> ANY aspect dealing with a satellite, software, hardware, ground
> stations
> > >> (hardware, software, protocols, etc.), ideas, random ejaculations
> from a
> > >> diseased mind or whatever that deals with spacecraft or ground
> stations
> > >> are DEEMED EXPORTS when they depart a U.S. citizen and are
> delivered to
> > >> a non-U.S. citizen. It is a nearly impossible task to abide by and
> one
> > >> that really makes me want to throw my hands up in despair and walk
> away.
> > >>
> > >> There are exceptions for classrooms and courses taught in U.S.
> > >> university's. A person, even a non-U.S. citizen, who can pay for
> taking
> > >> a course, may go and involve themselves in course work, even if it is
> > >> dealing with the design, construction, and control of spacecraft
> during
> > >> the course work. Some of this applies to your earlier questions
> but for
> > >> US service academies, there are very few non-U.S. citizens in them.
> > >
> > > Bob:
> > >
> > > I would not dream of second-guessing you for a moment, since you are
> > > fully engaged in this stuff and I am simply an interested observer.
> > >
> > > However, why doesn't the following quotation directly from the ITAR
> > > regulations provide the exemption we need? The quotation comes from
> the
> > > section that defines what are the items that are covered by ITAR:
> > >
> > > ITAR Part 121 - The United States Munitions List
> > >
> > > -----------------------< begin quote >-------------------------------
> > >
> > > Category XV - Spacecraft Systems and Associated Equipment
> > >
> > > *(a) Spacecraft, including communications satellites, remote sensing
> > > satellites, scientific satellites, research satellites, navigation
> > > satellites, experimental and multi-mission satellites.
> > >
> > > *NOTE TO PARAGRAPH (a): Commercial communications satellites,
> scientific
> > > satellites, research satellites, and experimental satellites are
> > > designated as SME only when the equipment is intended for use by the
> > > armed forces of any foreign country.
> > >
> > > -----------------------< end quote >---------------------------------
> > >
> > > Note that SME refers to "Significant Military Equipment"
> > >
> > > Paragraph (a) seems to cover everything and anything having to do with
> > > satellites, but the asterisk and "NOTE" attached to it seems to say
> that
> > > an Amateur radio satellite for use by Amateurs instead of foreign
> armed
> > > forces should be exempted, doesn't it?
> > >
> > > Granted, I realize that we have already lost one argument with ITAR
> > > about our past cooperation with AMSAT-DL, but is there some compelling
> > > reason why the lawyers didn't point out this exception?
> > >
> > > Just wondering...
> > > If I had to guess the answer myself, after looking at the horribly
> > > convoluted language of the small piece of the ITAR regulations that I
> > > have looked at, there is probably another paragraph elsewhere that
> > > effectively says, "we were just kidding when we said that it had to be
> > > used by foreign armed forces, we really mean it to cover everything"
> > >
> > > John
> > > W0JT
> > >
> > >
> > > _______________________________________________
> > > 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
>
> ------------------------------------------------------------------------
> Windows 7: I wanted more reliable, now it's more reliable. Wow!
>
<http://microsoft.com/windows/windows-7/default.aspx?h=myidea?ocid=PID24727::T
:WLMTAGL:ON:WL:en-US:WWL_WIN_myidea:102009>
------------------------------
Message: 12
Date: Mon, 26 Oct 2009 01:08:17 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 in V/US repeater until November 1
To: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Cc: Amsat-BB <amsat-bb@xxxxx.xxx>
Message-ID:
<1793385761.387161256519297447.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxxxx
x.xxx>
Content-Type: text/plain; charset=utf-8
Hi Drew et al
I monitored the last pass with three radios.? On the standard 70cm
downlink.? A three foot primestar dish with transystem 3731aa downconverter
to a TS700A transceiver.? Finally a "portable" 20 turn helix with a IC-W32a
connected to a Keps 13-LNC2-PH downconverter.? The primestar dish and 70cm
antennas tracked automatically via a LVB tracker.? With the 20 turn helix I
stood out in the driveway (w/rain) waving it around at the sky (neighbors
already look at me?funny).? I?was surprised how sharp the 20 turn helix is,
20 degrees off the satellite and it's?almost gone. ?Solid full quieting
signals on all three receivers, obviously the dish was stronger.? With
monitoring all three receivers and tracking doppler manually I had no time
to do any transmitting.? A very busy and entertaining 10 minutes!? I have a
couple of pictures of the lash up should anyone like to see them, email
direct.? S o any of you AO-40 (sobsob) fans dust off your S band gear!
73 Bob W7LRD
Seattle
----- Original Message -----
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
To: "Amsat-BB" <amsat-bb@xxxxx.xxx>
Sent: Sunday, October 25, 2009 4:34:44 PM GMT -08:00 US/Canada Pacific
Subject: [amsat-bb] ?AO-51 in V/US repeater until November 1
FM Repeater, V/US
Uplink: 145.920 MHz FM
Downlink: 435.300 and 2401.200 MHz FM
Reports on the S band transmitter would be appreciated.
73, Drew KO4MA
_______________________________________________
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: 13
Date: Mon, 26 Oct 2009 03:34:00 +0100
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Making a Circular Polarized antenna
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>, "Alan" <ve4yz@xxx.xxx>,
"AMSAT-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <002301ca55e4$c6b474a0$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Greg, KO6TH
You are right.
Imagine to get two folded dipoles horizontally mounted over the same boom
at a distance of 1/2 wave in space (180?)
They are feed in phase and we are looking along the boom in one direction.
First case:
The rear dipole has the inner conductor of the feed line connected to the
right stud and the front dipole has the inner conductor of the feed line
connected to the left stud.
At time-1 with maximum positive voltage the maximum current in the rear
dipole is flowing right of you and for the same reason in the front dipole
the current is flowing left of you.
After 180? the maximum current in the front dipole reverses direction and
actually flow right of you but at the same time the field radiated by the
rear dipole has propagate up to the front dipole and having the same
right direction both field reinforces linearly and horizontally polarized.
Second case:
The rear dipole has the inner conductor of the feed line connected to the
right stud and the front dipole has the inner conductor of the feed line
connected as well to the right stud.
At time-1 with maximum positive voltage the maximum current in the rear
dipole is flowing right of you and for the same reason in the front dipole
the current is flowing right of you.
After 180? the maximum current in the front dipole reverses direction and
actually flow left of you but at the same time the field radiated by the
rear dipole has propagated up to the front dipole and having opposite
directions right and left at the same time both fields cancel out.
73" de
i8CVS Domenico
----- Original Message -----
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
To: <ve4yz@xxx.xxx>; <amsat-bb@xxxxx.xxx>
Sent: Sunday, October 25, 2009 8:45 PM
Subject: [amsat-bb] Re: Making a Circular Polarized antenna
>
> Interesting visual program! But, I don't see a way to offset the two
antennas in space, only in phase. I agree that if you put two antennas in
the same plane and 180 degrees out of phase, they will nicely cancel each
other out. But if they are offset, then the linear signals will cancel,
while a CP signal will have rotated 180 degrees in passing through that
offset, and will be in-phase at the second antenna. No?
>
> Greg KO6TH
>
>
> > From: ve4yz@xxx.xxx
> > To: ko6th_greg@xxxxxxx.xxxx amsat-bb@xxxxx.xxx
> > Subject: RE: [amsat-bb] Making a Circular Polarized antenna
> > Date: Sat, 24 Oct 2009 20:08:49 -0500
> >
> > http://www.enzim.hu/~szia/emanim/emanim.htm
> >
> > Above link has a wonderful 3D graphic display of waves. Give it a try.
> >
> > You can adjust V, H, phase, and then display sum of the 2 waves.
> >
> > I use it mainly to show how circular polarization comes about.
> >
> > The sum of 2 waves in the same plane ( 180 degrees rotated ), 180
degrees
> > out of phase ( 1/2 wavelength ) is a nul which probably would be out
> > performed by a rubber ducky.
> >
> >
> >
> >
> > > -----Original Message-----
> > > From: amsat-bb-bounces@xxxxx.xxx
> > > [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Greg D.
> > > Sent: October 24, 2009 7:34 PM
> > > To: amsat-bb@xxxxx.xxx
> > > Subject: [amsat-bb] Making a Circular Polarized antenna
> > >
> > >
> > > Hi folks,
> > >
> > > Just curious...
> > >
> > > One of the ways to make a circularly polarized antenna is to
> > > feed two linearly polarized antennas in-phase, but mount one
> > > them 90 degrees rotated from the other, and 1/4 wavelength
> > > ahead of it.
> > >
> > > Couldn't one also mount the two antennas 180 degrees rotated
> > > and 1/2 wavelength ahead?
> > >
> > > The reason I ask is that I have some flat panel 2.4 ghz
> > > "Wi-Fi" antennas, and the mounting holes work out best that way.
> > >
> > > The only effect I can think of is that the array will
> > > probably pick up signals from both left and right
> > > polarizations, which could actually be handy.
> > >
> > > Greg KO6TH
> > >
> > >
> > > _________________________________________________________________
> > > Windows 7: It helps you do more. Explore Windows 7.
> > > http://www.microsoft.com/Windows/windows-7/default.aspx?ocid=P
> > > ID24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_evergreen3:102009
> > > _______________________________________________
> > > 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
> > >
> >
>
> _________________________________________________________________
> Windows 7: It works the way you want. Learn more.
>
http://www.microsoft.com/Windows/windows-7/default.aspx?ocid=PID24727::T:WLM
TAGL:ON:WL:en-US:WWL_WIN_evergreen2:102009
> _______________________________________________
> 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: 14
Date: Sun, 25 Oct 2009 18:14:54 -0400
From: John Hansen <john@xxxxxx.xxx>
Subject: [amsat-bb] KLM 22c and 40cx antennas for sale
To: amsat-bb@xxxxx.xxx
Message-ID:
<ba5a52be0910251514o3c35c3f0gc90a2dd54c40eef9@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Long boom circular polarized Yagi's. Complete with manuals. $75 each plus
shipping. These are UPS shippable. They have not been used in several
years, but were working FB when last in service. PayPal accepted. Photos
available at:
www.johnahansen.com
For more information contact John W2FS at john@xxxxxx.xxx
Thanks,
John Hansen W2FS
------------------------------
_______________________________________________
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 569
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