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CX2SA > SATDIG 10.11.09 22:06l 505 Lines 15493 Bytes #999 (0) @ WW
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Sent: 091110/2004Z @:CX2SA.LAV.URY.SA #:16422 [Minas] FBB7.00e $:AMSATBB4595
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Yaesu 5400B Az-El Rotators for Sale (John Hansen)
2. Re: SatMag - Thoughts On Satellite Filings
(Samudra Haque N3RDX & S21X)
3. Re: Android/g-phone satellite tracking application (David Johnson)
4. Out of the Office (Martha)
5. Yagi balance point (David Wing)
6. Re: Yagi balance point (Joe Fitzgerald)
7. Re: Yagi balance point (Nigel Gunn G8IFF/W8IFF)
8. digital voice webpage (Bruce Robertson)
9. Re: Yagi balance point (David Wing)
10. Re: Yagi balance point (Nigel Gunn G8IFF/W8IFF)
11. Re: Yagi balance point (i8cvs)
----------------------------------------------------------------------
Message: 1
Date: Tue, 10 Nov 2009 10:29:19 -0500
From: John Hansen <john@xxxxxx.xxx>
Subject: [amsat-bb] Yaesu 5400B Az-El Rotators for Sale
To: amsat-bb@xxxxx.xxx
Message-ID:
<ba5a52be0911100729w60ca17bbn8088d75cdfe8f8ef@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
A set of Yaesu 5400B Az-El Rotators for Sale. Tested yesterday and found to
work FB. There is a place in the vicinity of West where the indicator
needle fluctuates as the rotator turns. This is probably the result of a
dirty pot. The package includes a custom made heavy duty L bracket with
side supports(this one won't bend!). Manual included. Pictures are
available at: www.johnahansen.com
$225 plus shipping from 14063.
John W2FS
------------------------------
Message: 2
Date: Tue, 10 Nov 2009 11:19:27 -0500
From: "Samudra Haque N3RDX & S21X" <n3rdx@xxxxx.xxx>
Subject: [amsat-bb] Re: SatMag - Thoughts On Satellite Filings
To: W4ART Arthur Feller <afeller@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<d8c724880911100819t3ba06a46ra5d26f1338440db1@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
Ok, I should have looked for IARU links a lot earlier. Even in S21 we had a
lot of help, interaction for amateur radio service by the IARU, and without
them the Bangladesh Amateur Radio League (any amsat folks also BARL members,
I am also S21X) could not have opened up the ham radio license process.
73 de N3RDX
On Mon, Nov 9, 2009 at 12:28 PM, W4ART Arthur Feller <afeller@xxxx.xxx>wrote:
> Hi, Samudra,
>
> AMSAT doesn't have the status to file anything with the ITU as that job is
> only for administrations, that is, the part of a national government with
> the task of meeting the country's obligations in telecommunication.
>
> For more information, suggest reading the articles available at:
> http://www.iaru.org/satellite.
>
> Let me know if you've got questions.
>
> 73, art.....
> W4ART Arlington VA
>
> On 9-Nov-2009, at 11:14 AM, Samudra Haque N3RDX & S21X wrote:
>
> That was an interesting article. Are there any archives of previous filings
> by AMSAT groups for their space missions as it pertains to ITU at all ? If
> not directly to ITU, what organization does AMSAT-NA file with to get
> frequency allotment and orbit allocation ?
>
> Samudra, N3RDX
>
> On Mon, Nov 9, 2009 at 10:28 AM, Trevor . <m5aka@xxxxx.xx.xx> wrote:
>
> The November issue of the free SatMagazine has an article titled 'Thoughts
>
> On Satellite Filings' written by the husband of US astronaut Nicole Stott,
>
> KE5GJN.
>
>
> Chris Stott is CEO of ManSat LLC and the Isle of Man?s Honorary
>
> Representative to the Space Industry.
>
>
> SatMagazine also has an article on on Space Security which touches on ITAR.
>
> It can be downloaded from
>
>
> http://www.satmagazine.com/2009/SatMag_Nov09.pdf
>
>
> 73 Trevor M5AKA
>
> Daily Amateur Radio Email/RSS News: http://www.southgatearc.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
>
>
> *What we** **can** **do is to live out our lives as best we can with
> purpose, and with love, and with joy. We can use each day to show those who
> are closest to us how much we care about them, and treat others with the
> kindness and respect that we wish for ourselves. We can learn from our
> mistakes and grow from our failures. ** **And we can strive at all costs
> to make a better world, so that someday, if we are blessed with the chance
> to look back on our time here, we know that we spent it well; that we made a
> difference; that our fleeting presence had a lasting impact on the lives of
> others.*
> * ** ** - Barak
> Obama, 29 Aug 2009*
>
>
------------------------------
Message: 3
Date: Tue, 10 Nov 2009 16:27:26 +0000
From: David Johnson <dave@xxxxx.xx.xx>
Subject: [amsat-bb] Re: Android/g-phone satellite tracking application
To: Jonathan Guthrie <ka8kpn@xxxxxxxxx.xxx>, AMSAT BB
<amsat-bb@xxxxx.xxx>
Message-ID: <4AF9946E.7080904@xxxxx.xx.xx>
Content-Type: text/plain; charset=UTF-8
Hi,
My Java source is a port of the original Predic C source and I honored
the GPLv2 that John Magliacane used for that.
It's been changed since then to increase performance when doing
predictions for multiple sats over a one day schedule, for multiple
gound-stations, as we need in Genso.
- Dave
Jonathan Guthrie wrote:
> On Fri, 2009-11-06 at 15:07 +0000, David Johnson wrote:
>> Hi,
>>
>> I'm just writing an IARU Locator App at the moment. Once I've done that,
>> I'll have the gound-station location sorted.
>>
>> I've already ported Predict SGP-4/SDP-4 to Java (in use by Genso) so I
>> think the next step should be relatively straightforward.
>>
>> You can check-out the code for the algorithm using subversion from:
>>
>> http://sourceforge.net/projects/websat/develop
>>
>> Please note that it is licensed under GPLv2.
>>
>> 73
>>
>> Dave
>> G4DPZ
>
>
> It's just my luck that the parts I like to work on are the parts that
> lots of other people like to work on, and are the same parts that are
> portable and easily encapsulated.
>
> I'm not that fond of the GPL, but I'll look into using your code instead
> of porting my own. Of course, that assumes that I ever actually do more
> about it than just talk.
>
> 73's and I hope fortune smiles upon you.
>
>
------------------------------
Message: 4
Date: Tue, 10 Nov 2009 11:54:33 -0500
From: Martha <martha@xxxxx.xxx>
Subject: [amsat-bb] Out of the Office
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID:
<956751cf0911100854gff20250t18d17e1895a4d138@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I will be out of the office on Wednesday, November 11th (Veterans' Day) and
Thursday, November 12th. I will be on Friday. Office hours are 10:00AM ET
- 6:00 PM ET.
--
73- Martha
------------------------------
Message: 5
Date: Tue, 10 Nov 2009 10:09:15 -0800
From: "David Wing" <david@xxxxxx.xxx>
Subject: [amsat-bb] Yagi balance point
To: <amsat-bb@xxxxx.xxx>
Message-ID: <8D4F44AB1FCD496685069CC03FED3DB0@xxxxx>
Content-Type: text/plain; charset="us-ascii"
I have two yagis that I need to mount a little off center and wanted to put
a little weight on the back of the antenna as a counter balance.
Assuming the counterbalance will need to go in front of the rearmost
reflector, does it matter if the counter balance is metallic (i.e. some
fishing weights)? Should I isolate it from the boom? Should I use
something ceramic instead?
73
David
K6CDW
------------------------------
Message: 6
Date: Tue, 10 Nov 2009 13:27:15 -0500
From: "Joe Fitzgerald" <jfitzgerald@xxxx.xxx.xxx>
Subject: [amsat-bb] Re: Yagi balance point
To: "David Wing" <david@xxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <d4180c06cdb0ed06cf3d5d1dc2394bdc.squirrel@xxxx.xxx.xxx>
Content-Type: text/plain;charset=iso-8859-1
As a practical matter, I'd use the fishing weights tucked in as close to
the boom as possible to keep the additional wind load down. In fact if
the boom is hollow, you could stick the weights inside and not increase
the wind load at all. As long as the metallic counterbalance is not
actually touching any elements you will be fine.
-Joe KM1P
------------------------------
Message: 7
Date: Tue, 10 Nov 2009 18:57:17 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: Yagi balance point
To: Joe Fitzgerald <jfitzgerald@xxxx.xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4AF9B78D.3040907@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
How about putting them inside the boom?
Joe Fitzgerald wrote:
>
> As a practical matter, I'd use the fishing weights tucked in as close to
> the boom as possible to keep the additional wind load down. In fact if
> the boom is hollow, you could stick the weights inside and not increase
> the wind load at all. As long as the metallic counterbalance is not
> actually touching any elements you will be fine.
>
> -Joe KM1P
>
> _______________________________________________
> 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
>
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail nigel@xxxxx.xxx www
http://www.ngunn.net
Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP
Club International #385,
Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC,
GCARES, XWARN.
------------------------------
Message: 8
Date: Tue, 10 Nov 2009 15:25:28 -0400
From: Bruce Robertson <ve9qrp@xxxxx.xxx>
Subject: [amsat-bb] digital voice webpage
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID:
<49657a760911101125t46c6ce2br77b3e6c549c63b98@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I don't believe that this web-page has been noted on amsat-bb
http://codec2.org/
Besides pointing out some serious problems with using the proprietary
codec that is currently built into DStar, it has the great idea of
hacking out the digital voice daughterboard in an ICOM DSTAR radio and
plopping in a replacement that implements a free codec.
I wonder how complicated it would be to integrate a digital repeater a
SDX linear transponder bandpass to operate as a suitable digital voice
channel or two. If the SDX on board nextgen will be programmable on
the fly, it's something we could work on on the ground and try in
flight later on.
73, Bruce
http://ve9qrp.blogspot.com
------------------------------
Message: 9
Date: Tue, 10 Nov 2009 11:27:28 -0800
From: "David Wing" <david@xxxxxx.xxx>
Subject: [amsat-bb] Re: Yagi balance point
To: "'Nigel Gunn G8IFF/W8IFF'" <nigel@xxxxx.xxx>, "'Joe Fitzgerald'"
<jfitzgerald@xxxx.xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <3054B25499A54F8F8BDBC88C4DED0F33@xxxxx>
Content-Type: text/plain; charset="us-ascii"
Inside the boom is a great idea but unfortunately I think it would be a bit
difficult as the rearmost reflector is only 1 inch from the end of the boom
and it goes right through the boom.
It could be done but I don't think the wind loading reduction would out
weight the "pain in the butt" factor.
Appreciate the suggestion though!
73, David
-----Original Message-----
From: Nigel Gunn G8IFF/W8IFF [mailto:nigel@xxxxx.xxxx
Sent: Tuesday, November 10, 2009 10:57 AM
To: Joe Fitzgerald
Cc: David Wing; amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Re: Yagi balance point
How about putting them inside the boom?
Joe Fitzgerald wrote:
>
> As a practical matter, I'd use the fishing weights tucked in as close to
> the boom as possible to keep the additional wind load down. In fact if
> the boom is hollow, you could stick the weights inside and not increase
> the wind load at all. As long as the metallic counterbalance is not
> actually touching any elements you will be fine.
>
> -Joe KM1P
>
> _______________________________________________
> 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
>
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail nigel@xxxxx.xxx www
http://www.ngunn.net
Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP
Club International #385,
Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC,
GCARES, XWARN.
------------------------------
Message: 10
Date: Tue, 10 Nov 2009 19:34:57 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: Yagi balance point
To: David Wing <david@xxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4AF9C061.2070008@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
What "pain in the butt factor"?
Remove the rear element, fit the ballast, refit the rear element.
If the elements are not removable from the boom and the beam isn't already
reasonably balanced then perhaps it was a
lousy choice of antenna.
David Wing wrote:
> Inside the boom is a great idea but unfortunately I think it would be a bit
> difficult as the rearmost reflector is only 1 inch from the end of the boom
> and it goes right through the boom.
------------------------------
Message: 11
Date: Tue, 10 Nov 2009 20:44:31 +0100
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Yagi balance point
To: "David Wing" <david@xxxxxx.xxx>, "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <001101ca623e$390c9220$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "David Wing" <david@xxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Tuesday, November 10, 2009 7:09 PM
Subject: [amsat-bb] Yagi balance point
> I have two yagis that I need to mount a little off center and wanted to
put
> a little weight on the back of the antenna as a counter balance.
>
>
> Assuming the counterbalance will need to go in front of the rearmost
> reflector, does it matter if the counter balance is metallic (i.e. some
> fishing weights)? Should I isolate it from the boom? Should I use
> something ceramic instead?
>
> 73
>
> David
>
> K6CDW
Hi David, K6CDW
Both for the KLM 2M-14C and KLM 2M-22C I suggest you to
remove the rear reflector and put into the boom a counterweight
made with a long piece of steel rod or lead rod if you prefere
having the same inside diameter of the boom and the right weight
to balance the antenna.
The lenght of the boom between the rear reflector and the rear dipole
is more than enough to get the needed counterweight.
Drill a hole into the boom and slip into it a bolt passing through the
conterweight and put again the reflector into the original hole.
73" de
i8CVS Domenico
------------------------------
_______________________________________________
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 595
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