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CX2SA > SATDIG 01.10.09 21:16l 872 Lines 24960 Bytes #999 (0) @ WW
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Sent: 091001/1908Z @:CX2SA.LAV.URY.SA #:6457 [Minas] FBB7.00e $:AMSATBB4508
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. College Satellite nights, Thursday night (Dr. Jay Garlitz)
2. Cute 1.7 Re Entry Competition (John Heath)
3. Re: Cute 1.7 Re Entry Competition (Alan VE4YZ)
4. Re: quadrafilar helix for 70cm- ambiguous design specs
(Art McBride)
5. Re: quadrafilar helix for 70cm- ambiguous design specs (i8cvs)
6. Hudson Valley Satcom Group Net Tonight October 01 At 8PM On
Echolink n2eyh-L (Cotejaune2@xxx.xxxx
7. European Space Weather Week: Reduced fee for Radio Amateurs
(Neil Melville)
8. Launch coverage! (David - KG4ZLB)
9. Re: Launch coverage! (Joe)
10. Re: quadrafilar helix for 70cm- ambiguous design specs
(Bryan Klofas)
11. Help with TrackBox and Yaesu Control Box (Vincenzo Mone)
----------------------------------------------------------------------
Message: 1
Date: Wed, 30 Sep 2009 15:05:37 -0400
From: "Dr. Jay Garlitz" <drjay@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] College Satellite nights, Thursday night
To: <amsat-bb@xxxxx.xxx>
Cc: jgarlitz@xxx.xxx
Message-ID:
<200909301905.n8UJ5cqS024641@xxxxxx.xxx.xxxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Don't forget to work the Thursday evening passes and listen for, and work,
college club stations. On AO-51 we'll be on the QRP transponder. AO-7
should be in mode B that evening. HAMSAT has been little used and is a
great bird, with some nice passes that evening. Activity will be centered
on passes starting Thursday Oct. 1st 22:00 UTC through 05:00 UTC. U of
Kansas (K0KU), Stanford (W6YX), UF Gators (W4DFU) and Rochester IT (K2GXT)
have already confirmed they will be on. Other clubs have been active during
past events including U Michigan, Michigan State U, U Kentucky. U Arkansas,
Naval Academy, and others.
Please give college station priority on the QRP transponder on AO-51 that
evening and let them work everyone they can. No good deed should go
unrewarded.look for an award certificate program in the near future for
working college club stations on satellite. We have asked the clubs to QSL
those that they work and appreciate your patience in letting the club
stations have priority for the evening.
Jay, AA4FL
------------------------------
Message: 2
Date: Wed, 30 Sep 2009 20:52:52 +0000 (GMT)
From: John Heath <g7hia@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Cute 1.7 Re Entry Competition
To: Amsat <amsat-bb@xxxxx.xxx>
Message-ID: <971062.88985.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Hi folks,
Thanks for the entries so far.
It has been pointed out that I didn't allow much time, so the closing date
is now one day later, midnight October 1st
To enter this fun competition send me your best estimate for the re-entry
date and time for Cute 1.7 Object 28941
Spacetrack suggests October 10th but I think it will be several days later.
The prize for the closest prediction is a 2.4GHz patch antenna kit as shown
on the Amsat-UK shop page under hardware.
73 John G7HIA
------------------------------
Message: 3
Date: Wed, 30 Sep 2009 16:16:14 -0500
From: "Alan VE4YZ" <ve4yz@xxx.xxx>
Subject: [amsat-bb] Re: Cute 1.7 Re Entry Competition
To: "'John Heath'" <g7hia@xxxxxxxxxx.xxx>, "'Amsat'"
<amsat-bb@xxxxx.xxx>
Message-ID: <CD3A70E3574B44F1ACBA73471BDCBD2C@xxxxxx>
Content-Type: text/plain; charset="US-ASCII"
Re: prize ... and bragging rights to the annoyance of all your ham-sat
friends ...
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of John Heath
Sent: September 30, 2009 3:53 PM
To: Amsat
Subject: [amsat-bb] Cute 1.7 Re Entry Competition
Hi folks,
Thanks for the entries so far.
It has been pointed out that I didn't allow much time, so the closing date
is now one day later, midnight October 1st
To enter this fun competition send me your best estimate for the re-entry
date and time for Cute 1.7 Object 28941
Spacetrack suggests October 10th but I think it will be several days later.
The prize for the closest prediction is a 2.4GHz patch antenna kit as shown
on the Amsat-UK shop page under hardware.
73 John G7HIA
_______________________________________________
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: Wed, 30 Sep 2009 22:09:08 -0700
From: "Art McBride" <kc6uqh@xxx.xxx>
Subject: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design
specs
To: "'i8cvs'" <domenico.i8cvs@xxx.xx>, "'AMSAT-BB'"
<amsat-bb@xxxxx.xxx>, "'Franklyn A. Ballentine, jr'"
<art.ballentine@xxxxx.xxx>
Message-ID: <4BF28D4581E947028FC23277495DFD89@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
The most comprehensive info on QFH antennas is the Microwave Journal
December 1970 Pgs 49-54 By CC Kilgus.
Art, KC6UQH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of i8cvs
Sent: Wednesday, September 30, 2009 5:35 AM
To: AMSAT-BB; Franklyn A. Ballentine, jr
Subject: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design specs
Hi Frank, KB1QZH
The best starting point is the original article of the inventor of QHA i.e
Walter Maxell, W2DU
In a separate email I have attached the above fundamental article.
73" de
i8CVS Domenico
----- Original Message -----
From: "Franklyn A. Ballentine, jr" <art.ballentine@xxxxx.xxx>
To: "i8cvs" <domenico.i8cvs@xxx.xx>
Cc: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Sent: Tuesday, September 29, 2009 6:45 PM
Subject: Re: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design
specs
I have a question along the same line. Is the QHA in the ARRL
Satellite Handbook \ Antenna handbook, a good starting place?
Thanks,
Frank B.
KB1QZH
On Tue, Sep 29, 2009 at 11:17 AM, i8cvs <domenico.i8cvs@xxx.xx> wrote:
> ----- Original Message -----
> From: "Tim Goodrich" <tim@xxxxxxxxxxx.xxx>
> To: <amsat-bb@xxxxx.xxx>
> Sent: Monday, September 28, 2009 9:45 PM
> Subject: [amsat-bb] quadrafilar helix for 70cm- ambiguous design specs
>
>> Hi All,
>>
>> The house I just bought precludes me from even using my arrow inside as
>> there must be something un-RF friendly in the walls. Therefore, I was
>> looking for a roof antenna and the October QST article on the QFH
inspired
>> me to build one. However, after doing some research, I have come up with
> two
>> sets of design specs and I'm unsure which one is correct.
>>
>>
>>
>> I converted everything from you're the 146Mhz QST model to 436Mhz.
> However,
>> when I plug that info into http://www.jcoppens.com/ant/qfh/calc.en.php
>>
>> The values it puts out are different in the "compensated length" field.
> The
>> only difference is this model calculates for a full turn as opposed to a
>> half turn, but the lengths shouldn't be as different as it says. Under
the
>> QST model, I get a wavelength of 688mm, but under the website's model, it
>> gives me a "compensated wavelength" of 729mm.
>>
>>
>>
>> The values I used to calculate are:
>>
>> 436
>>
>> 1
>>
>> 1
>>
>> 15
>>
>> 2
>>
>> .23
>>
>>
>>
>> Can anyone tell me which specs to use and/or explain this compensated
>> wavelength issue?
>>
>>
>>
>> Thank you,
>>
>> Tim
>>
>> KI6VBY
>>
> Hi Tim, KI6VBY
>
> Read please the book "REFLECTION" Transmission Lines and Antennas by
> M. Walter Maxwell, W2DU Chapter 22 The Quadrifilar Helix Antenna pages
> 22-1 to 22-23 and also
> "Experimental Investigation of Quadrifilar Helix Antennas for 2400 MHz"
The
> AMSAT Journal May/June 2004
> In a separate email I have sent to you both articles as an attachement.
>
> 73" de
>
> i8CVS Domenico
>
>
>
> _______________________________________________
> 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
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 4468 (20090929) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 4471 (20090930) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
------------------------------
Message: 5
Date: Thu, 1 Oct 2009 14:30:36 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design
specs
To: "KC6UQH" <kc6uqh@xxx.xxx>, "'AMSAT-BB'" <amsat-bb@xxxxx.xxx>,
"'Franklyn A. Ballentine, jr'" <art.ballentine@xxxxx.xxx>
Message-ID: <001b01ca4292$fafe2ae0$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Art, KC6UQH
I would like to receive from you copy of the Microwave Journal December 1970
Pgs 49-54 By Doctor CC Kilgus about the QFH Antennas.
Tanks
73" de
i8CVS Domenico
----- Original Message -----
From: "Art McBride" <kc6uqh@xxx.xxx>
To: "'i8cvs'" <domenico.i8cvs@xxx.xx>; "'AMSAT-BB'" <amsat-bb@xxxxx.xxx>;
"'Franklyn A. Ballentine, jr'" <art.ballentine@xxxxx.xxx>
Sent: Thursday, October 01, 2009 7:09 AM
Subject: RE: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design
specs
> The most comprehensive info on QFH antennas is the Microwave Journal
> December 1970 Pgs 49-54 By CC Kilgus.
>
> Art, KC6UQH
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of i8cvs
> Sent: Wednesday, September 30, 2009 5:35 AM
> To: AMSAT-BB; Franklyn A. Ballentine, jr
> Subject: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design specs
>
> Hi Frank, KB1QZH
>
> The best starting point is the original article of the inventor of QHA i.e
> Walter Maxell, W2DU
>
> In a separate email I have attached the above fundamental article.
>
> 73" de
>
> i8CVS Domenico
>
> ----- Original Message -----
> From: "Franklyn A. Ballentine, jr" <art.ballentine@xxxxx.xxx>
> To: "i8cvs" <domenico.i8cvs@xxx.xx>
> Cc: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
> Sent: Tuesday, September 29, 2009 6:45 PM
> Subject: Re: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design
> specs
>
>
> I have a question along the same line. Is the QHA in the ARRL
> Satellite Handbook \ Antenna handbook, a good starting place?
>
> Thanks,
> Frank B.
> KB1QZH
>
> On Tue, Sep 29, 2009 at 11:17 AM, i8cvs <domenico.i8cvs@xxx.xx> wrote:
> > ----- Original Message -----
> > From: "Tim Goodrich" <tim@xxxxxxxxxxx.xxx>
> > To: <amsat-bb@xxxxx.xxx>
> > Sent: Monday, September 28, 2009 9:45 PM
> > Subject: [amsat-bb] quadrafilar helix for 70cm- ambiguous design specs
> >
> >> Hi All,
> >>
> >> The house I just bought precludes me from even using my arrow inside as
> >> there must be something un-RF friendly in the walls. Therefore, I was
> >> looking for a roof antenna and the October QST article on the QFH
> inspired
> >> me to build one. However, after doing some research, I have come up
with
> > two
> >> sets of design specs and I'm unsure which one is correct.
> >>
> >>
> >>
> >> I converted everything from you're the 146Mhz QST model to 436Mhz.
> > However,
> >> when I plug that info into http://www.jcoppens.com/ant/qfh/calc.en.php
> >>
> >> The values it puts out are different in the "compensated length" field.
> > The
> >> only difference is this model calculates for a full turn as opposed to
a
> >> half turn, but the lengths shouldn't be as different as it says. Under
> the
> >> QST model, I get a wavelength of 688mm, but under the website's model,
it
> >> gives me a "compensated wavelength" of 729mm.
> >>
> >>
> >>
> >> The values I used to calculate are:
> >>
> >> 436
> >>
> >> 1
> >>
> >> 1
> >>
> >> 15
> >>
> >> 2
> >>
> >> .23
> >>
> >>
> >>
> >> Can anyone tell me which specs to use and/or explain this compensated
> >> wavelength issue?
> >>
> >>
> >>
> >> Thank you,
> >>
> >> Tim
> >>
> >> KI6VBY
> >>
> > Hi Tim, KI6VBY
> >
> > Read please the book "REFLECTION" Transmission Lines and Antennas by
> > M. Walter Maxwell, W2DU Chapter 22 The Quadrifilar Helix Antenna pages
> > 22-1 to 22-23 and also
> > "Experimental Investigation of Quadrifilar Helix Antennas for 2400 MHz"
> The
> > AMSAT Journal May/June 2004
> > In a separate email I have sent to you both articles as an attachement.
> >
> > 73" de
> >
> > i8CVS Domenico
> >
> >
> >
> > _______________________________________________
> > 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
>
> __________ Information from ESET NOD32 Antivirus, version of virus
signature
> database 4468 (20090929) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
>
>
> __________ Information from ESET NOD32 Antivirus, version of virus
signature
> database 4471 (20090930) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
------------------------------
Message: 6
Date: Thu, 1 Oct 2009 09:48:17 EDT
From: Cotejaune2@xxx.xxx
Subject: [amsat-bb] Hudson Valley Satcom Group Net Tonight October 01
At 8PM On Echolink n2eyh-L
To: amsat-bb@xxxxx.xxxx nb2f@xxxxx.xxxx roi@xxxxxxxxx.xxxx
wb2llp@xxxxxxxxx.xxx
Message-ID: <d56.388a2049.37f60d21@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Hello again everyone. We are starting our fourth year with net # 79
tonight. I am sorry that the link was not enabled for the last net. Our club
director of engineering assured me that it will be tonight. So please join
us this
evening on the net.
73
Gary wa2aqh
------------------------------
Message: 7
Date: Thu, 1 Oct 2009 15:20:05 +0200
From: Neil Melville <nmelville@xxxxx.xxx>
Subject: [amsat-bb] European Space Weather Week: Reduced fee for Radio
Amateurs
To: amsat-bb@xxxxx.xxx
Message-ID:
<72a5db5d0910010620w63ef5a15q2356ada0cc19775c@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
Hi all, a friend and colleague from work asked me to pass this along to the
community.
Neil
PA9N
------------------
The sixth European Space Weather Week will take place in Brugge, Belgium,
from Monday 16th November to Friday 20th November 2009.
The ESWW meetings aim to bring together diverse communities working on all
elements of space weather with a strong focus on user involvement. This
year?s meeting will discuss recent advances in both scientific and
applications based domains and how these advances relate to user needs.
This year the space weather tutorial and one of the plenary sessions will
focus on issues relating to space weather effects on communications. With
this in mind, the programme committee has made a special arrangement for
radio hams who would like to attend the meeting.
Radio amateurs with a license to operate are also welcome to the conference
and will get a discount. Radio Amateurs are requested to send a copy of
their license to esa.conference.bureau@xxx.xxx within one week after
registration. Registration as a Radio Amateur includes access to scientific
sessions on Tuesday and Wednesday and tutorial only. The reduced fee is 50
?. Attendance to the reception and conference dinner is not included. The
deadline for online registration for hams is October 19.
For more info see: http://sidc.oma.be/esww6
------------------------------
Message: 8
Date: Thu, 01 Oct 2009 12:47:23 -0400
From: David - KG4ZLB <kg4zlb@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Launch coverage!
To: amsat-bb@xxxxx.xxx
Message-ID: <4AC4DD1B.1000409@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I was intrigued yesterday to see in capsule footage of the launch of the
Soyuz (with the "Space Clown") from Russia!
Does anyone know if NASA plans to broadcast footage from inside the
Shuttle, maybe a split screen showing the traditional launch and the
other side showing the crew during lift off?
Thanks
--
David
KG4ZLB
www.kg4zlb.com
------------------------------
Message: 9
Date: Thu, 01 Oct 2009 12:16:57 -0500
From: Joe <nss@xxx.xxx>
Subject: [amsat-bb] Re: Launch coverage!
To: kg4zlb@xxxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4AC4E409.2090206@xxx.xxx>
Content-Type: text/plain; charset=us-ascii; format=flowed
Yeah that was neat I was watching it in the middle of the night the
other night, and was funny to watch the lion that was hanging, some
russian traditon. they said.
But was funny to see it hanging straight down pre launch and all during
the power phase. then after engine cut off, it started floarting all
around the cabin.
I was also amazed to see them using tools to adjust controls, kinda like
remote gripper things.
Joe WB9SBD
David - KG4ZLB wrote:
>I was intrigued yesterday to see in capsule footage of the launch of the
>Soyuz (with the "Space Clown") from Russia!
>
>Does anyone know if NASA plans to broadcast footage from inside the
>Shuttle, maybe a split screen showing the traditional launch and the
>other side showing the crew during lift off?
>
>Thanks
>
>
>
>------------------------------------------------------------------------
>
>
>No virus found in this incoming message.
>Checked by AVG - www.avg.com
>Version: 8.5.420 / Virus Database: 270.14.1/2407 - Release Date: 10/01/09
06:34:00
>
>
>
------------------------------
Message: 10
Date: Thu, 01 Oct 2009 10:22:47 -0700
From: Bryan Klofas <bklofas@xxxxx.xxx>
Subject: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design
specs
To: "'AMSAT-BB'" <amsat-bb@xxxxx.xxx>
Message-ID: <4AC4E567.7020707@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
http://polysat.calpoly.edu/earthstation/documents/helix-microwavejournal-dec19
70.pdf
--
Bryan Klofas, KF6ZEO
i8cvs wrote:
> Hi Art, KC6UQH
>
> I would like to receive from you copy of the Microwave Journal December 1970
> Pgs 49-54 By Doctor CC Kilgus about the QFH Antennas.
>
> Tanks
>
> 73" de
>
> i8CVS Domenico
>
> ----- Original Message -----
> From: "Art McBride" <kc6uqh@xxx.xxx>
> To: "'i8cvs'" <domenico.i8cvs@xxx.xx>; "'AMSAT-BB'" <amsat-bb@xxxxx.xxx>;
> "'Franklyn A. Ballentine, jr'" <art.ballentine@xxxxx.xxx>
> Sent: Thursday, October 01, 2009 7:09 AM
> Subject: RE: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design
> specs
>
>
>> The most comprehensive info on QFH antennas is the Microwave Journal
>> December 1970 Pgs 49-54 By CC Kilgus.
>>
>> Art, KC6UQH
>>
>> -----Original Message-----
>> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
>> Behalf Of i8cvs
>> Sent: Wednesday, September 30, 2009 5:35 AM
>> To: AMSAT-BB; Franklyn A. Ballentine, jr
>> Subject: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design specs
>>
>> Hi Frank, KB1QZH
>>
>> The best starting point is the original article of the inventor of QHA i.e
>> Walter Maxell, W2DU
>>
>> In a separate email I have attached the above fundamental article.
>>
>> 73" de
>>
>> i8CVS Domenico
>>
>> ----- Original Message -----
>> From: "Franklyn A. Ballentine, jr" <art.ballentine@xxxxx.xxx>
>> To: "i8cvs" <domenico.i8cvs@xxx.xx>
>> Cc: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
>> Sent: Tuesday, September 29, 2009 6:45 PM
>> Subject: Re: [amsat-bb] Re: quadrafilar helix for 70cm- ambiguous design
>> specs
>>
>>
>> I have a question along the same line. Is the QHA in the ARRL
>> Satellite Handbook \ Antenna handbook, a good starting place?
>>
>> Thanks,
>> Frank B.
>> KB1QZH
>>
>> On Tue, Sep 29, 2009 at 11:17 AM, i8cvs <domenico.i8cvs@xxx.xx> wrote:
>>> ----- Original Message -----
>>> From: "Tim Goodrich" <tim@xxxxxxxxxxx.xxx>
>>> To: <amsat-bb@xxxxx.xxx>
>>> Sent: Monday, September 28, 2009 9:45 PM
>>> Subject: [amsat-bb] quadrafilar helix for 70cm- ambiguous design specs
>>>
>>>> Hi All,
>>>>
>>>> The house I just bought precludes me from even using my arrow inside as
>>>> there must be something un-RF friendly in the walls. Therefore, I was
>>>> looking for a roof antenna and the October QST article on the QFH
>> inspired
>>>> me to build one. However, after doing some research, I have come up
> with
>>> two
>>>> sets of design specs and I'm unsure which one is correct.
>>>>
>>>>
>>>>
>>>> I converted everything from you're the 146Mhz QST model to 436Mhz.
>>> However,
>>>> when I plug that info into http://www.jcoppens.com/ant/qfh/calc.en.php
>>>>
>>>> The values it puts out are different in the "compensated length" field.
>>> The
>>>> only difference is this model calculates for a full turn as opposed to
> a
>>>> half turn, but the lengths shouldn't be as different as it says. Under
>> the
>>>> QST model, I get a wavelength of 688mm, but under the website's model,
> it
>>>> gives me a "compensated wavelength" of 729mm.
>>>>
>>>>
>>>>
>>>> The values I used to calculate are:
>>>>
>>>> 436
>>>>
>>>> 1
>>>>
>>>> 1
>>>>
>>>> 15
>>>>
>>>> 2
>>>>
>>>> .23
>>>>
>>>>
>>>>
>>>> Can anyone tell me which specs to use and/or explain this compensated
>>>> wavelength issue?
>>>>
>>>>
>>>>
>>>> Thank you,
>>>>
>>>> Tim
>>>>
>>>> KI6VBY
>>>>
>>> Hi Tim, KI6VBY
>>>
>>> Read please the book "REFLECTION" Transmission Lines and Antennas by
>>> M. Walter Maxwell, W2DU Chapter 22 The Quadrifilar Helix Antenna pages
>>> 22-1 to 22-23 and also
>>> "Experimental Investigation of Quadrifilar Helix Antennas for 2400 MHz"
>> The
>>> AMSAT Journal May/June 2004
>>> In a separate email I have sent to you both articles as an attachement.
>>>
>>> 73" de
>>>
>>> i8CVS Domenico
>>>
>>>
>>>
>>> _______________________________________________
>>> 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
>>
>> __________ Information from ESET NOD32 Antivirus, version of virus
> signature
>> database 4468 (20090929) __________
>>
>> The message was checked by ESET NOD32 Antivirus.
>>
>> http://www.eset.com
>>
>>
>>
>>
>> __________ Information from ESET NOD32 Antivirus, version of virus
> signature
>> database 4471 (20090930) __________
>>
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Message: 11
Date: Thu, 1 Oct 2009 19:55:29 +0200
From: "Vincenzo Mone" <vimone@xxxxx.xx>
Subject: [amsat-bb] Help with TrackBox and Yaesu Control Box
To: "Amsat - BBs" <amsat-bb@xxxxx.xxx>
Message-ID:
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Hello to the list,
I own a trackBox and as Rotator the G-5400B.
I have noticed a strange thing when I go to switch of the Control box.
Every time I switch it off, while the Trackbox is on,
I see the trackBox lcd going crazy or I can see the letters disappear and
The top of the display all square.
Anybody can tell me what is going on and how to solve it?
Thanks in advance for any help that will be really appreciated.
73 de Enzo IK8OZV
EasyLog 5 BetaTester
EasyLog PDA BetaTester
WinBollet BetaTester
D.C.I. CheckPoint Regione Campania
Skype: ik8ozv8520
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End of AMSAT-BB Digest, Vol 4, Issue 508
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