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CX2SA > SATDIG 15.09.14 14:05l 510 Lines 16148 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. 5 in em55 (wa4hfn@xxxxxxx.xxxx
2. Telemetry Stations - Information Requested (Jerry Buxton)
3. Lindenblads (Robin Midgett)
4. Re: Lindenblads (Jim Jerzycke)
5. Re: Lindenblads (Doug - k4gkj)
6. Re: Lindenblads (Gus)
7. Re: Lindenblads (David G0MRF)
8. sat pc32 help (Nick Pugh K5QXJ)
9. Re: sat pc32 help (Paul Stoetzer)
----------------------------------------------------------------------
Message: 1
Date: Sun, 14 Sep 2014 22:57:34 +0000 (UTC)
From: wa4hfn@xxxxxxx.xxx
To: AMSAT <amsat-bb@xxxxx.xxx>
Cc: "gol, Grid" <starcom-bb@xxxxxxxx.xxx>
Subject: [amsat-bb] 5 in em55
Message-ID:
<1534693393.20547948.1410735454882.JavaMail.root@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Congrats to N5AFV for award #53 5 in em55
good job Allen
WA4HFN em55
Damon
www.starcommgroup.org
------------------------------
Message: 2
Date: Sun, 14 Sep 2014 18:51:28 -0500
From: Jerry Buxton <amsat@xxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Telemetry Stations - Information Requested
Message-ID: <54162A00.2000406@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi All,
I am interested in hearing about the types of equipment in the various
stations of those of you who capture telemetry from the amateur radio
satellites.
My general purpose is to have an understanding of the "typical
station". The information will be useful in our design of ground
telemetry formats for AMSAT satellites.
If you are an active telemetry gatherer could please respond with a
short description of the equipment you use to receive the various
satellite telemetry to include
Antenna - type, polarization, if yagi number of elements
Preamp - yes or no
Rig - Make, model
Output from rig i.e. packet port, auxiliary audio, discriminator tap, etc.
PC Capture device - build in sound card, if add in or external sound
card then make and model
Thank you for your help!
--
Jerry Buxton, N?JY
------------------------------
Message: 3
Date: Sun, 14 Sep 2014 20:38:44 -0500
From: Robin Midgett <K4IDC@xxxxxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Lindenblads
Message-ID:
<CAJHj7F6R7RZ5KQyVnmc0uSs-L_bUshoA28uJMRRPc_X1b7+VNQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hello to the group,
I'd like to hear from any users of the Lindenblad antennas regarding
switching polarity & circularity.
Based on the article on the AMSAT web page by W6SHP at
http://www.amsat.org/amsat/articles/w6shp/lindy.html, I'm led to believe
that the maximum effect comes from having one Lindy for each of RHCP & LHCP
per band in addition to being able to invert the polarity of each.
I'd like to hear from users concerning how often switching between RH & LH
circularity yields benefits as compared to switching polarity on a single
Lindy.
I've long had an interest in satellite operation. Due to being involved
with a recent ARISS event, the interest level has been elevated..it's time
for me to get on the birds. I welcome your input regarding the Lindenblad
antennas.
------------------------------
Message: 4
Date: Mon, 15 Sep 2014 02:21:42 +0000
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Lindenblads
Message-ID: <54164D36.8020905@xxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
You can't switch polarity on a single Lindenblad.
The polarity is determined by the mechanical "slant" of the elements,
hence the need for one each of RHCP and LHCP.
You'd then switch feedlines to the radio for the polarity desired.
73, Jim KQ6EA
On 09/15/2014 01:38 AM, Robin Midgett wrote:
> Hello to the group,
> I'd like to hear from any users of the Lindenblad antennas regarding
> switching polarity & circularity.
> Based on the article on the AMSAT web page by W6SHP at
> http://www.amsat.org/amsat/articles/w6shp/lindy.html, I'm led to believe
> that the maximum effect comes from having one Lindy for each of RHCP & LHCP
> per band in addition to being able to invert the polarity of each.
> I'd like to hear from users concerning how often switching between RH & LH
> circularity yields benefits as compared to switching polarity on a single
> Lindy.
>
> I've long had an interest in satellite operation. Due to being involved
> with a recent ARISS event, the interest level has been elevated..it's time
> for me to get on the birds. I welcome your input regarding the Lindenblad
> antennas.
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 5
Date: Sun, 14 Sep 2014 22:32:05 -0400
From: Doug - k4gkj <k4gkj@xxxxxxxxxx.xxx>
To: kq6ea@xxxxxxx.xxxx amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Lindenblads
Message-ID: <h54kpcs63ebba7mnnab9n1ak.1410748325436@xxxxx.xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
RE read his question.?
He was asking the benifit of having a RH & ?LH versus just one that did have
a switch.......?
I too wonder what the benefit and reasons for having such....?
Doug Bennight
K4GKJ
850-528-5772
850-926-2052?
-------- Original message --------
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
Date:
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Lindenblads
You can't switch polarity on a single Lindenblad.
The polarity is determined by the mechanical "slant" of the elements,
hence the need for one each of RHCP and LHCP.
You'd then switch feedlines to the radio for the polarity desired.
73, Jim? KQ6EA
On 09/15/2014 01:38 AM, Robin Midgett wrote:
> Hello to the group,
> I'd like to hear from any users of the Lindenblad antennas regarding
> switching polarity & circularity.
> Based on the article on the AMSAT web page by W6SHP at
> http://www.amsat.org/amsat/articles/w6shp/lindy.html, I'm led to believe
> that the maximum effect comes from having one Lindy for each of RHCP & LHCP
> per band in addition to being able to invert the polarity of each.
> I'd like to hear from users concerning how often switching between RH & LH
> circularity yields benefits as compared to switching polarity on a single
> Lindy.
>
> I've long had an interest in satellite operation. Due to being involved
> with a recent ARISS event, the interest level has been elevated..it's time
> for me to get on the birds. I welcome your input regarding the Lindenblad
> antennas.
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> 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. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
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, 14 Sep 2014 22:44:02 -0400
From: Gus <gus@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Lindenblads
Message-ID: <54165272.8040605@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
The thing is, if you only have one, then there is nothing to switch.
It's either permanently RHCP, or it's permanently LHCP, and which ever
it is, it is. There is no switching back and forth.
On 09/14/2014 10:32 PM, Doug - k4gkj wrote:
> RE read his question.
> He was asking the benifit of having a RH & LH versus just one that did
have a switch.......
>
> I too wonder what the benefit and reasons for having such....
>
>
> Doug Bennight
> K4GKJ
> 850-528-5772
> 850-926-2052
>
>
>
>
> -------- Original message --------
> From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
> Date:
> To: amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] Lindenblads
>
> You can't switch polarity on a single Lindenblad.
>
> The polarity is determined by the mechanical "slant" of the elements,
> hence the need for one each of RHCP and LHCP.
>
> You'd then switch feedlines to the radio for the polarity desired.
>
> 73, Jim KQ6EA
>
>
>
> On 09/15/2014 01:38 AM, Robin Midgett wrote:
>> Hello to the group,
>> I'd like to hear from any users of the Lindenblad antennas regarding
>> switching polarity & circularity.
>> Based on the article on the AMSAT web page by W6SHP at
>> http://www.amsat.org/amsat/articles/w6shp/lindy.html, I'm led to believe
>> that the maximum effect comes from having one Lindy for each of RHCP & LHCP
>> per band in addition to being able to invert the polarity of each.
>> I'd like to hear from users concerning how often switching between RH & LH
>> circularity yields benefits as compared to switching polarity on a single
>> Lindy.
>>
>> I've long had an interest in satellite operation. Due to being involved
>> with a recent ARISS event, the interest level has been elevated..it's time
>> for me to get on the birds. I welcome your input regarding the Lindenblad
>> antennas.
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
Opinions expressed
>> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
>> 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. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> 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. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
--
Gus 8P6SM
The Easternmost Isle
------------------------------
Message: 7
Date: Mon, 15 Sep 2014 04:21:34 -0400
From: David G0MRF <g0mrf@xxx.xxx>
To: K4IDC@xxxxxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Lindenblads
Message-ID: <8D19ED532349706-345C-F8@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hi Robin.
If you want to monitor satellite telemetry, e.g. AO-73, or listen to the
strong signals from the ISS, then the Lindenblad is a great choice.
However, if you want to make QSOs via the satellites I believe you will need
an antenna with some gain.
Of the satellites that are available, SO-50 has quite a weak downlink.
Meanwhile, the available linear transponders by their nature divide the
available power between the users. It's always an advantage to have a good
receiving system and an omnidirectional antenna is unlikely to be an optimal
solution. Circular polarisation however is a definite advantage.
Let us know how what choices you make and how you get on.
Good luck
David G0MRF
-----Original Message-----
From: Robin Midgett <K4IDC@xxxxxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Sent: Mon, 15 Sep 2014 6:23
Subject: [amsat-bb] Lindenblads
Hello to the group,
I'd like to hear from any users of the Lindenblad antennas regarding
switching polarity & circularity.
Based on the article on the AMSAT web page by W6SHP at
http://www.amsat.org/amsat/articles/w6shp/lindy.html, I'm led to believe
that the maximum effect comes from having one Lindy for each of RHCP & LHCP
per band in addition to being able to invert the polarity of each.
I'd like to hear from users concerning how often switching between RH & LH
circularity yields benefits as compared to switching polarity on a single
Lindy.
I've long had an interest in satellite operation. Due to being involved
with a recent ARISS event, the interest level has been elevated..it's time
for me to get on the birds. I welcome your input regarding the Lindenblad
antennas.
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
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: Mon, 15 Sep 2014 06:23:45 -0500
From: "Nick Pugh K5QXJ" <quadpugh@xxxxxxxxx.xxx>
To: "'AMSAT'" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] sat pc32 help
Message-ID: <00d201cfd0d7$838cc2e0$8aa648a0$@xxx>
Content-Type: text/plain; charset="us-ascii"
The below listed TLE for kicksat causes an error invalid floating point
opera any suggestions as what the problem is
KICKSAT
1 39685U 14022F 14133.79926973 .10230793 12532-4 76634-3 0 839
2 39685 051.6478 260.9431 0011364 321.6786 038.9487 16.39478651 3997
Thanks
nick
Office 337 593 8700
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
------------------------------
Message: 9
Date: Mon, 15 Sep 2014 07:36:00 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Nick Pugh K5QXJ <quadpugh@xxxxxxxxx.xxx>
Cc: AMSAT <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] sat pc32 help
Message-ID:
<CABzOSOqwrw6++YpNZ5ivi8tZsxQX2uhry7nxiqw1R-7+f_cJKA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
KickSat decayed on May 15th, so there are probably issues with the
calculations (resulting in negative altitudes for example) that cause the
error.
73,
Paul, N8HM
On Mon, Sep 15, 2014 at 7:23 AM, Nick Pugh K5QXJ <quadpugh@xxxxxxxxx.xxx>
wrote:
> The below listed TLE for kicksat causes an error invalid floating point
> opera any suggestions as what the problem is
>
>
>
> KICKSAT
>
> 1 39685U 14022F 14133.79926973 .10230793 12532-4 76634-3 0 839
>
> 2 39685 051.6478 260.9431 0011364 321.6786 038.9487 16.39478651 3997
>
>
>
>
>
> Thanks
>
>
>
> nick
>
> Office 337 593 8700
>
> Cell 337 258 2527
>
>
>
> Helping UL become a world Class Engineering and Educational School
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> 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.
AMSAT-NA makes this open forum available to all interested persons worldwide
without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
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 9, Issue 324
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