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CX2SA > SATDIG 15.10.08 01:03l 404 Lines 10782 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V3 522
Path: IZ3LSV<IK2XDE<F5GOV<IR4U<CX2SA
Sent: 081014/2246Z @:CX2SA.LAV.URY.SA #:40780 [Minas] FBB7.00e $:40780_CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Turnstyle antena (Dirgantara YF0EEE)
2. Re: SSTV (David - KG4ZLB/M?ZLB)
3. 3 ISS images received (andy thomas)
4. ISS SSTV (Steve)
5. Re: ISS (Curt Nixon)
6. Richard Garriott on ISS (Alan)
7. Re: ISS (Gerry)
8. Re: SSTV Formats (MM)
9. Re: SSTV Formats (Simon (HB9DRV))
10. MarexMG Slide Show recomendations (MM)
----------------------------------------------------------------------
Message: 1
Date: Tue, 14 Oct 2008 15:04:40 +0700
From: "Dirgantara YF0EEE" <enggi1401(AT)gmail.com>
Subject: [amsat-bb] Re: Turnstyle antena
To: "AMSAT-BB" <amsat-bb(AT)amsat.org>
Message-ID: <012d01c92dd3$8d36ad90$fbce517c(AT)yd1eee12>
Content-Type: text/plain; charset="iso-8859-1"
hi Gordon
if I use home brew it is possible in space ?, Sun solar hardener it possible
damage the antenna
any solution ? Factory build ? if possible already tested in hardener and
for Space use.
btw want to use in VHF and UHF
thanks
de YF0EEE
----- Original Message -----
From: "Gordon JC Pearce MM3YEQ" <gordonjcp(AT)gjcp.net>
To: "AMSAT-BB" <amsat-bb(AT)amsat.org>
Sent: Tuesday, October 14, 2008 2:44 PM
Subject: [amsat-bb] Re: Turnstyle antena
Dirgantara R - YF?EEE wrote:
> hi
>
> Any body know ?, in where i can buy Turnsytle antena for LEO Sat ? and
> cheap.
> I have some project testing Prototype LEO Sat.
>
> 73 de YF0EEE
Turnstile antennas are actually pretty easy to make. At its simplest,
it's four bits of wire about 1/4 wavelength long, with a 1/4 wavelength
phasing loop joining them. Note that the lengths of the elements and
the phasing loop are going to be actually 1/4 wavelength multiplied by
the velocity factor, which for the elements will be so near unity it's
not worth bothering with (make them a tiny bit shorter *if* you need
to), and for the phasing loop will be dependant on the cable used - 0.66
for RG58.
You haven't said which frequency range you want the antenna for, but on
UHF I've had excellent results with the K5OE antenna, and I've also had
a lot of success with the "cheap yagi" designs by WA5VJB. The latter I
found a bit "narrow" to tune, though.
Gordon
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------------------------------
Message: 2
Date: Tue, 14 Oct 2008 12:55:17 -0400
From: David - KG4ZLB/M?ZLB <m0zlb(AT)btinternet.com>
Subject: [amsat-bb] Re: SSTV
To: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID: <48F4CEF5.30000(AT)btinternet.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Mmmm...passes are a problem down here in SW Florida - initially very few
and those that there are, are low in the sky and at awkward times of the
day!
David
KG4ZLB
Simon (HB9DRV) wrote:
> Seems like it's just luck - if anyone talks to him I would suggest he uses
> Martin 2 - twice as fast, there's no need for Martin 1 from the ISS.
>
> My next decent pass is tomorrow...
>
> Simon Brown, HB9DRV
> www.ham-radio-deluxe.com
>
> ----- Original Message -----
> From: "P. Thomas Gabel" <ktgab(AT)sbcglobal.net>
>
>
>
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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: 3
Date: Tue, 14 Oct 2008 17:39:41 +0000 (GMT)
From: andy thomas <andythomasmail(AT)yahoo.co.uk>
Subject: [amsat-bb] 3 ISS images received
To: amsat <amsat-bb(AT)amsat.org>
Message-ID: <776389.57328.qm(AT)web25607.mail.ukl.yahoo.com>
Content-Type: text/plain; charset=utf-8
3 received from Owen at 1434 (stamped 1426), 1436 (1432 stamp) and 1439 z, all
Martin 1. will upload shorthly. all dfferent test images.
73 de andy g0sfj
------------------------------
Message: 4
Date: Tue, 14 Oct 2008 17:40:42 -0000
From: "Steve" <ai7w(AT)arrl.net>
Subject: [amsat-bb] ISS SSTV
To: "AMSAT BB" <amsat-bb(AT)amsat.org>
Message-ID: <113A2713CD79474A9F8EE39734449424(AT)AI7WDesk>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
No SSTV on the last pass over the Western U.S. An unmodulated carrier came
on at 17:38UTC and continued until LOS.
Steve .. AI7W
------------------------------
Message: 5
Date: Tue, 14 Oct 2008 13:49:36 -0400
From: Curt Nixon <cptcurt(AT)flash.net>
Subject: [amsat-bb] Re: ISS
To: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID: <48F4DBB0.2090708(AT)flash.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Heard Richard in an ARISS School contact over Canada on the 17:31pass.
SOlid copy but not super strong.
KU8L
EN82hi
------------------------------
Message: 6
Date: Tue, 14 Oct 2008 12:55:56 -0500
From: "Alan" <ve4yz(AT)mts.net>
Subject: [amsat-bb] Richard Garriott on ISS
To: <amsat-bb(AT)amsat.org>
Message-ID: <495E0B90734344BAB274BCA59310A273(AT)athlon>
Content-Type: text/plain; charset="us-ascii"
Mode of passes over NA seems unpredictable.
The 17:40Z pass was just carrier until ISS was half way across NA and then
Richard came on and made a few QSO's, one with a school and another with a
VA3
I was sitting with MMSSTV monitoring when the voice TX started.
Next time I will have SatPC32ISS running along side of MMSSTV :-)
73, Alan VE4YZ
EN19kw
AMSAT LM 2352
http://www.mts.net/~ve4wsc/
AMSAT A-485
------------------------------
Message: 7
Date: Tue, 14 Oct 2008 12:57:28 -0500
From: "Gerry" <ve4gtb(AT)mts.net>
Subject: [amsat-bb] Re: ISS
To: <captcurt(AT)flash.net>, "AMSAT BB" <amsat-bb(AT)amsat.org>
Message-ID: <45E6D992E83F4213911CA74385CEA140(AT)LittleMolly>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I heard Richard on same contact at 17:35 also heard him trying to reply to a
VE3??? mobile good strong signal here into Winnipeg,Manitoba EN19
----- Original Message -----
From: "Curt Nixon" <cptcurt(AT)flash.net>
To: "AMSAT BB" <amsat-bb(AT)amsat.org>
Sent: Tuesday, October 14, 2008 12:49 PM
Subject: [amsat-bb] Re: ISS
> Heard Richard in an ARISS School contact over Canada on the 17:31pass.
>
> SOlid copy but not super strong.
>
> KU8L
>
> EN82hi
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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
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------------------------------
Message: 8
Date: Tue, 14 Oct 2008 11:07:05 -0700 (PDT)
From: MM <ka1rrw(AT)yahoo.com>
Subject: [amsat-bb] Re: SSTV Formats
To: "'Amsat - BBs'" <amsat-bb(AT)amsat.org>, "Simon \(HB9DRV\)"
<simon(AT)hb9drv.ch>
Message-ID: <794758.83628.qm(AT)web56408.mail.re3.yahoo.com>
Content-Type: text/plain; charset=us-ascii
Hi all:
The current version of SpaceCam1 supports the following formats:
Robot-36
Robot-72
Scottie S1
Scottie S2
Martin M1
If there is enough public interest and support we can ask ARISS if they will
approve SpaceCam2
WF1F Miles MarexMG
(formally Marex-NA, Our web page got hijacked so we Incorporated as MarexMG)
--- On Tue, 10/14/08, Simon (HB9DRV) <simon(AT)hb9drv.ch> wrote:
> From: Simon (HB9DRV) <simon(AT)hb9drv.ch>
> Subject: [amsat-bb] Re: SSTV
> To: "'Amsat - BBs'" <amsat-bb(AT)amsat.org>
> Date: Tuesday, October 14, 2008, 12:47 PM
> Seems like it's just luck - if anyone talks to him I
> would suggest he uses
> Martin 2 - twice as fast, there's no need for Martin 1
> from the ISS.
>
> My next decent pass is tomorrow...
>
> Simon Brown, HB9DRV
> www.ham-radio-deluxe.com
>
> ----- Original Message -----
> From: "P. Thomas Gabel"
> <ktgab(AT)sbcglobal.net>
>
>
> > Looks like no SSTV on the 16:00 pass over US Nuts.
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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: 9
Date: Tue, 14 Oct 2008 20:22:55 +0200
From: "Simon \(HB9DRV\)" <simon(AT)hb9drv.ch>
Subject: [amsat-bb] Re: SSTV Formats
To: <ka1rrw(AT)yahoo.com>, "'Amsat - BBs'" <amsat-bb(AT)amsat.org>
Message-ID: <31087921FB3742AAAE1D040483522386(AT)doubletrouble>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi,
Go for Scottie 2 please - about one minute per picture, there's no need for
the longer Martin 1 / Scottie 1 format on VHF.
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
----- Original Message -----
From: "MM" <ka1rrw(AT)yahoo.com>
>
> Hi all:
> The current version of SpaceCam1 supports the following formats:
>
> Robot-36
> Robot-72
> Scottie S1
> Scottie S2
> Martin M1
>
> If there is enough public interest and support we can ask ARISS if they
> will approve SpaceCam2
>
------------------------------
Message: 10
Date: Tue, 14 Oct 2008 11:58:26 -0700 (PDT)
From: MM <ka1rrw(AT)yahoo.com>
Subject: [amsat-bb] MarexMG Slide Show recomendations
To: "'Amsat - BBs'" <amsat-bb(AT)amsat.org>, "Simon \(HB9DRV\)"
<simon(AT)hb9drv.ch>
Message-ID: <292717.12006.qm(AT)web56408.mail.re3.yahoo.com>
Content-Type: text/plain; charset=us-ascii
I forgot include the details on Thermal issues.
We do not have convection cooling in space!
All electronics in ISS run hotter than they would on Earth.
The Kenwood TM-D700 has not been modified to operate in Zero-G, without
Convection cooling!
Therefore the official recommendations from MarexMG are the following:
Run the Slide Show mode at 5 minute intervals more.
Set the TX power output to Low or watts.
Set the Image format for Robot-36! (reduce duty cycle)
Do not run Unattended until we have established the stability of the VOX and
set the Audio settings to prevent continuous carriers.
Record the temperature of the heat sink at the Antenna junction.
73 Miles WF1F www.marexmg.org
------------------------------
_______________________________________________
Sent via amsat-bb(AT)amsat.org. 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 3, Issue 522
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