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CX2SA > SATDIG 04.09.11 21:05l 440 Lines 15278 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: IARU AC Meeting Summary (g.shirville@xxxxxxxxxx.xxxx
2. Re: Adjusting true north for azimuth rotator. (John Wright)
3. Re: Adjusting true north for azimuth rotator. (Dee)
4. Re: Adjusting true north for azimuth rotator. (Joe Leikhim)
5. Re: Adjusting true north for azimuth rotator. (Greg D.)
6. Re: Adjusting true north for azimuth rotator. (Joe)
7. Re: Adjusting true north for azimuth rotator. (Jim Wright)
8. Re: Adjusting true north for azimuth rotator. (i8cvs)
9. ARISSat-12 Reception Certificates (Clint Bradford)
----------------------------------------------------------------------
Message: 1
Date: Sun, 4 Sep 2011 11:56:04 +0100
From: <g.shirville@xxxxxxxxxx.xxx>
To: "Trevor ." <m5aka@xxxxx.xx.xx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: IARU AC Meeting Summary
Message-ID: <85B40E3C130D407FB1EDE05C8EC1B125@xxxxxxx.xxxxx>
Content-Type: text/plain; format=flowed; charset="utf-8";
reply-type=original
Hi Trevor,
Thanks for the links...the Administrative Council Minutes have some
particularly interesting items for us. It is good to see that a 50MHz
worldwide satellite service allocation (hopefully for up and downlinks) is
now top of their list of priorities and satellites are also be recognised in
next year's World Amateur Radio Day
73
Graham
G3VZV
7.1.4. The Administrative Council reviewed the priorities and strategy
regarding future WRC agenda items related to amateur radio. The following
priorities were
established: a harmonized allocation including amateur-satellite at 50 MHz,
a wider
harmonized allocation at 160 meters, expansion of the 10 MHz amateur
allocation and a
worldwide, secondary allocation of approximately 150 kHz at 5 MHz.
10.6. In light of the anniversary of the launch of OSCAR 1 in December, 1961
and the
launch of OSCAR 2 in June, 1962, the Administrative Council selected the
phrase, ?Amateur
Radio Satellites: Celebrating 50 Years in Space? as the theme for World
Amateur Radio
Day, 18 April 2012.
------------------------------
Message: 2
Date: Sun, 04 Sep 2011 14:10:14 +0100
From: John Wright <ham@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
Message-ID: <0LoKNd-1Rfpnn2aPB-00gtPr@xxxxxxxx.xxxxxxxxxxxx.xx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 21:42 03/09/2011, you wrote:
>I am planning to install my G5400 rotator inside a tower having a
>welded rotator shelf. The tower is not installed yet and will have
>one face against the side of my house which is positioned about 28
>degrees northeast (Per Google Earth).
>
>I assume when I drill the rotator shelf, I can adjust for the gross
>28 degree offset of the tower. However how important is it to do
>this at all? Does the rotator have to be installed exactly toward
>true north or can I make up the difference when clamping down the
>antenna mast assuming the antenna is oriented true north? Note I
>will be using a Trakbox and need the ADC to center on true north.
Surely it matters not how the rotator is mount, you just clamp MAST
so that the antenna are north pointing, the orientation of the
physical rotator is unimportant.
------------------------------
Message: 3
Date: Sun, 04 Sep 2011 11:14:24 -0400
From: Dee <morsesat@xxxxxxxxx.xxx>
To: "'John Wright'" <ham@xxxxx.xx.xx>, amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
Message-ID: <001201cc6b15$548c0710$fda41530$@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Another aspect to consider.... Do you want the center to be pointing
North or South??? Sometimes I find that when a satellite passes to
the south, my array has to turn around 360 degrees to continue to
track. This is a personal choice....
73, NB2F
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx
On Behalf Of John Wright
Sent: Sunday, September 04, 2011 9:10 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
At 21:42 03/09/2011, you wrote:
>I am planning to install my G5400 rotator inside a tower having a
>welded rotator shelf. The tower is not installed yet and will have
>one face against the side of my house which is positioned about 28
>degrees northeast (Per Google Earth).
>
>I assume when I drill the rotator shelf, I can adjust for the gross
>28 degree offset of the tower. However how important is it to do
>this at all? Does the rotator have to be installed exactly toward
>true north or can I make up the difference when clamping down the
>antenna mast assuming the antenna is oriented true north? Note I
>will be using a Trakbox and need the ADC to center on true north.
Surely it matters not how the rotator is mount, you just clamp MAST
so that the antenna are north pointing, the orientation of the
physical rotator is unimportant.
_______________________________________________
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: 4
Date: Sun, 04 Sep 2011 13:15:29 -0400
From: Joe Leikhim <rhyolite@xxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
Message-ID: <4E63B231.8090100@xxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Thanks to all who replied. When I last installed the rotator, I had a
free standing tower and I pored the foundation and mounting bolts such
that one leg was aligned true north.
In this new case, the tower face will have to be against a wall and that
wall as I mentioned is +28 degrees from north. The consensus is that the
azimuth rotator case can be oriented in any direction and the antenna's
(and elevation rotator separation kit) be clamped to the top of the
rotator aligned to true north. What I can't sort out is if I will hit a
stop if I rotate full CW or CCW, before reaching the south direction.
The comments seem to imply I won't.
Thanks.
--
Joe Leikhim
Leikhim and Associates
Communications Consultants
Oviedo, Florida
www.Leikhim.com
JLeikhim@xxxxxxx.xxx
407-982-0446
------------------------------
Message: 5
Date: Sun, 4 Sep 2011 10:49:51 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
To: <rhyolite@xxxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
Message-ID: <BLU133-W24E8E3593365988527D440A91A0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
It will not be a problem. The key is to have the rotor's motor rotated to
zero degrees before securing the clamps for the North-facing antenna.
You will only run into the stop if you try to pass through North from one
side to the other, requiring you to swing fully around. That is why some
set up their rotors to have the motor's zero degree setting aimed South, if
most of the things they aim at are + / - North. That's not the case here,
so I use the regular Zero = North arrangement. (Or invest in a rotor that
can swing through 450 degrees...)
Greg KO6TH
> Date: Sun, 4 Sep 2011 13:15:29 -0400
> From: rhyolite@xxxxxxxx.xxx
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
>
> Thanks to all who replied. When I last installed the rotator, I had a
> free standing tower and I pored the foundation and mounting bolts such
> that one leg was aligned true north.
>
> In this new case, the tower face will have to be against a wall and that
> wall as I mentioned is +28 degrees from north. The consensus is that the
> azimuth rotator case can be oriented in any direction and the antenna's
> (and elevation rotator separation kit) be clamped to the top of the
> rotator aligned to true north. What I can't sort out is if I will hit a
> stop if I rotate full CW or CCW, before reaching the south direction.
> The comments seem to imply I won't.
>
> Thanks.
>
> --
> Joe Leikhim
>
> Leikhim and Associates
> Communications Consultants
> Oviedo, Florida
>
> www.Leikhim.com
>
> JLeikhim@xxxxxxx.xxx
>
> 407-982-0446
>
> _______________________________________________
> 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, 04 Sep 2011 13:02:54 -0500
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
Message-ID: <4E63BD4E.50907@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I had a rotor once I do not remember who made it. But it was super nice
because it had 400 degrees of rotation.
the stops were both sides of north by 45 degrees. don't remember who
made it tho but that was NICE!!
Joe WB9SBD
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 9/4/2011 12:49 PM, Greg D. wrote:
> It will not be a problem. The key is to have the rotor's motor rotated to
zero degrees before securing the clamps for the North-facing antenna.
>
> You will only run into the stop if you try to pass through North from one
side to the other, requiring you to swing fully around. That is why some
set up their rotors to have the motor's zero degree setting aimed South, if
most of the things they aim at are + / - North. That's not the case here,
so I use the regular Zero = North arrangement. (Or invest in a rotor that
can swing through 450 degrees...)
>
> Greg KO6TH
>
>
>> Date: Sun, 4 Sep 2011 13:15:29 -0400
>> From: rhyolite@xxxxxxxx.xxx
>> To: amsat-bb@xxxxx.xxx
>> Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
>>
>> Thanks to all who replied. When I last installed the rotator, I had a
>> free standing tower and I pored the foundation and mounting bolts such
>> that one leg was aligned true north.
>>
>> In this new case, the tower face will have to be against a wall and that
>> wall as I mentioned is +28 degrees from north. The consensus is that the
>> azimuth rotator case can be oriented in any direction and the antenna's
>> (and elevation rotator separation kit) be clamped to the top of the
>> rotator aligned to true north. What I can't sort out is if I will hit a
>> stop if I rotate full CW or CCW, before reaching the south direction.
>> The comments seem to imply I won't.
>>
>> Thanks.
>>
>> --
>> Joe Leikhim
>>
>> Leikhim and Associates
>> Communications Consultants
>> Oviedo, Florida
>>
>> www.Leikhim.com
>>
>> JLeikhim@xxxxxxx.xxx
>>
>> 407-982-0446
>>
>> _______________________________________________
>> 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: 7
Date: Sun, 04 Sep 2011 14:06:26 -0400
From: Jim Wright <wa4ivm@xxxxx.xxx>
To: Joe Leikhim <rhyolite@xxxxxxxx.xxx>, Amsat-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
Message-ID: <4E63BE22.2010700@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I believe the G5400 is a 360 degree rotor control. If you are wanting
to go from West through North to East, you will hit the stop.
Two options come to mind. Put the stop at South, but this gives the
same problem going from West to East though South. The second option is
a program like FLIPANTS that turns the antenna on it's back and turns
the Az control plus/minus 180 so that the stop is not a problem.
Decide if the "through North" or "through South" will become a problem
and make a choice, then use the software to overcome it.
Flipants is a old DOS program, but I think you can find an equivalent
available. Click below to go to download Flipants.
http://www.mustbeart.com/software/flipants.html
Good luck and I hope this helps solve some obstacles.
73,
Jim WA4IVM
ps: The G5500 rotator has a 450 degree travel and helps diminish this
problem, but it will cost more $$$$.
On 9/4/2011 1:15 PM, Joe Leikhim wrote:
> Thanks to all who replied. When I last installed the rotator, I had a
> free standing tower and I pored the foundation and mounting bolts such
> that one leg was aligned true north.
>
> In this new case, the tower face will have to be against a wall and
> that wall as I mentioned is +28 degrees from north. The consensus is
> that the azimuth rotator case can be oriented in any direction and the
> antenna's (and elevation rotator separation kit) be clamped to the top
> of the rotator aligned to true north. What I can't sort out is if I
> will hit a stop if I rotate full CW or CCW, before reaching the south
> direction. The comments seem to imply I won't.
>
> Thanks.
>
------------------------------
Message: 8
Date: Sun, 4 Sep 2011 20:43:33 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "Amsat - BBs" <amsat-bb@xxxxx.xxx>, "John Wright"
<ham@xxxxx.xx.xx>
Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
Message-ID: <000001cc6b32$dfdf6c40$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "John Wright" <ham@xxxxx.xx.xx>
To: <amsat-bb@xxxxx.xxx>
Sent: Sunday, September 04, 2011 3:10 PM
Subject: [amsat-bb] Re: Adjusting true north for azimuth rotator.
>
> Surely it matters not how the rotator is mount, you just clamp MAST
> so that the antenna are north pointing, the orientation of the
> physical rotator is unimportant.
>
Hi John, G4DMF
In my opinion the orientation of the physical rotator over the mast is
very important because the rotator has limit switches.
If you just clamp mast so that the antennas are north pointing but the
rotator do not actuate limit switches when the antennas are looking
South than the adjustement will be incorrect.
73" de
i8CVS Domenico
------------------------------
Message: 9
Date: Sun, 04 Sep 2011 11:58:19 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ARISSat-12 Reception Certificates
Message-ID: <9C2A7B64-BF98-4582-A9A1-E003E8D8484B@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
The folks behind issuing the ARISSat-1 reception report certificates ARE
hard at work - even
on a Sunday! - getting them sent out: I just received one! If you haven;t
received yours yet,
it is coming!
Clint Bradford, K6LCS
------------------------------
_______________________________________________
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 6, Issue 505
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