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CX2SA > SATDIG 28.02.14 21:02l 409 Lines 11333 Bytes #999 (0) @ WW
BID : AMSATBB974
Read: GUEST
Subj: AMSAT-BB-digest V9 74
Path: IZ3LSV<IK2XDE<DB0RES<DB0ANF<CX2SA
Sent: 140228/2002Z @:CX2SA.SAL.URY.SA #:3919 [Salto] FBB7.00e $:AMSATBB974
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: AO 73 Set Up (Rich/wa4bue)
2. Successful Japanese satellite launch (M5AKA)
3. Re: Tracker for use with Arrow (Lee Maisel) (Tom Warren)
4. Re: Tracker for use with Arrow (Lee Maisel) (Dino Papas)
5. ISS CubeSats Deployed - LituanicaSAT-1 heard (M5AKA)
6. LitSat-1 over Brazil (Roland Zurmely)
7. WRAPS Additional Information (Mark Spencer)
8. Re: WRAPS Additional Information (Dino Papas)
9. Inverted-V turnstile idea (Jonny 290)
----------------------------------------------------------------------
Message: 1
Date: Thu, 27 Feb 2014 17:58:17 -0500
From: "Rich/wa4bue" <richard.siff@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AO 73 Set Up
Message-ID: <315399991EAC49B0BA46F41536A1056D@xxxxxxxxx>
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply-type=original
Hi All,
Today we started the Dash Borad set up.
TS 2000
Signal Link USB
HP lap top computer with Windows 7
Note with rotor control, CAT for TS 2000, Remote Mouse, and Signal Link all
USB ports are used.
We playe with the SDR down load.
Is this going to work for down load of data from AO 73 or do we need
something elese!
god Bless
R
------------------------------
Message: 2
Date: Thu, 27 Feb 2014 23:16:21 +0000 (GMT)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Successful Japanese satellite launch
Message-ID:
<1393542981.51804.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
See http://amsat-uk.org/2014/02/27/successful-launch-of-japanese-satellites/
DK3WN satellite blog http://www.dk3wn.info/p/
73 Trevor M5AKA
------------------------------
Message: 3
Date: Thu, 27 Feb 2014 14:50:59 -0500
From: Tom Warren <mtnest@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Tracker for use with Arrow (Lee Maisel)
Message-ID: <0A450B7A-89C6-49DD-9C5E-65A2AF4F6891@xxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
I?m just starting to build one of the WRSPS systems, currently waiting
for 2 small items to arrive.
Be aware that the micro-controller board requires SMD soldering. If you
plan to build it using
the BOM parts from the specified suppliers it will coast a little over $200
not including antennas,
preamp/s, etc.
I?m doing it for the education and anticipate, at some point after
completion, modifying some of the
mechanism for remote operation and weatherproofed operation. The DVD that
comes with the board
contains all the construction info and add?l pictures over and above the
ones you will see on the
?in-depth? website.
As of now, I?ve not been able to find a video of this system in actual
operation.
73
Tom
W4TMW
????????????????
Lee,
If you are willing to do a little construction, WA8SME has a very nice
design which appeared in QST,
called WRAPS. Completely shameless plug! You can order the key circuit
board, bare, and programmed
PIC chip on the AMSAT Store:
http://preview.tinyurl.com/n2xegf6
It is $30 plus modest shipping. You can find a link to a download of the
article. I haven't built one
myself, but construction is straight forward and doesn't require any exotic
tools or skills.
Over the years there have been a few other similar controllers, but none
that I am aware of which are
currently available assembled. Another approach some have used is to use
Yaesu rotators with an
inverter to power them. That would not be a cost effective way new, but you
sometimes find them very
cheaply at hamfests.
73s,
Alan
WA4SCA
------------------------------
Message: 4
Date: Thu, 27 Feb 2014 20:09:24 -0500
From: Dino Papas <kl0s@xxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Tracker for use with Arrow (Lee Maisel)
Message-ID: <1598D305-B15C-434F-9B47-E4A409C9EF87@xxx.xxx>
Content-Type: text/plain; charset=windows-1252
Here?s Mark?s presentation describing the system:
http://www.youtube.com/watch?v=K5Xx6K7tM0Y
Dino KL0S
On Feb272014, at 1450 PM, Tom Warren <mtnest@xxxxxxx.xxx> wrote:
>
> I?m just starting to build one of the WRSPS systems, currently waiting
for 2 small items to arrive.
>
> Be aware that the micro-controller board requires SMD soldering. If you
plan to build it using
> the BOM parts from the specified suppliers it will coast a little over
$200 not including antennas,
> preamp/s, etc.
>
> I?m doing it for the education and anticipate, at some point after
completion, modifying some of the
> mechanism for remote operation and weatherproofed operation. The DVD that
comes with the board
> contains all the construction info and add?l pictures over and above the
ones you will see on the
> ?in-depth? website.
>
> As of now, I?ve not been able to find a video of this system in actual
operation.
>
> 73
> Tom
> W4TMW
> ????????????????
>
>
> Lee,
>
> If you are willing to do a little construction, WA8SME has a very nice
design which appeared in QST,
> called WRAPS. Completely shameless plug! You can order the key circuit
board, bare, and programmed
> PIC chip on the AMSAT Store:
>
> http://preview.tinyurl.com/n2xegf6
>
> It is $30 plus modest shipping. You can find a link to a download of the
article. I haven't built one
> myself, but construction is straight forward and doesn't require any
exotic tools or skills.
>
> Over the years there have been a few other similar controllers, but none
that I am aware of which are
> currently available assembled. Another approach some have used is to use
Yaesu rotators with an
> inverter to power them. That would not be a cost effective way new, but
you sometimes find them very
> cheaply at hamfests.
>
> 73s,
>
> Alan
> WA4SCA
>
> _______________________________________________
> 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: 5
Date: Fri, 28 Feb 2014 10:32:06 +0000 (GMT)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ISS CubeSats Deployed - LituanicaSAT-1 heard
Message-ID:
<1393583526.19746.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
http://amsat-uk.org/2014/02/28/iss-amateur-radio-cubesats-deployed/
----
73 Trevor M5AKA
AMSAT-UK
Website http://amsat-uk.org/
Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396
Twitter https://twitter.com/AMSAT_UK
----
------------------------------
Message: 6
Date: Fri, 28 Feb 2014 02:49:53 -0800 (PST)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] LitSat-1 over Brazil
Message-ID:
<1393584593.53891.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Copied the strong 9k6 data signal !
Please see here:
http://www.qsl.net/py4zbz/litsat.htm
73 de Roland ?PY4ZBZ ?GH70un
------------------------------
Message: 7
Date: Fri, 28 Feb 2014 07:42:58 -0500
From: "Mark Spencer" <wa8sme@xxxxxxx.xxx>
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] WRAPS Additional Information
Message-ID: <001501cf3482$9c1999b0$d44ccd10$@xxx>
Content-Type: text/plain; charset="us-ascii"
You can download the additional information for the WRAPS system at this web
dropbox location: Click here to view WRAPS CD Master
<https://www.dropbox.com/l/W1bqbzv8EKIpfNvLX0mJee> .
Please let me know if you have any problems. My e-mail is mspencer@xxxx.xxx
[not .net.if you try dot net, I don't have that address]. I haven't made a
video of the rotator operation, didn't think of it, it is sort of like
watching grass grow, and currently it is too darn cold to do it.
73,
Mark
Mark Spencer, WA8SME
Education and Technology Program Consultant
ARRL, the national association for Amateur RadioTM
43 Pinelock Dr.
Gales Ferry, CT 06335
860-381-5335
860-460-1139 (cell)
mspencer@xxxx.xxx
------------------------------
Message: 8
Date: Fri, 28 Feb 2014 08:24:43 -0500
From: Dino Papas <kl0s@xxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: WRAPS Additional Information
Message-ID: <1B9BA737-31C7-45A6-80B7-830D126F6507@xxx.xxx>
Content-Type: text/plain; charset=windows-1252
I knew Mark was lurking somewhere out there?thanks for chiming in!
Dino KL0S
On Feb282014, at 0742 AM, Mark Spencer <wa8sme@xxxxxxx.xxx> wrote:
> You can download the additional information for the WRAPS system at this web
> dropbox location: Click here to view WRAPS CD Master
> <https://www.dropbox.com/l/W1bqbzv8EKIpfNvLX0mJee> .
>
> Please let me know if you have any problems. My e-mail is mspencer@xxxx.xxx
> [not .net.if you try dot net, I don't have that address]. I haven't made a
> video of the rotator operation, didn't think of it, it is sort of like
> watching grass grow, and currently it is too darn cold to do it.
>
> 73,
>
> Mark
>
> Mark Spencer, WA8SME
> Education and Technology Program Consultant
> ARRL, the national association for Amateur RadioTM
> 43 Pinelock Dr.
> Gales Ferry, CT 06335
> 860-381-5335
> 860-460-1139 (cell)
> mspencer@xxxx.xxx
>
>
>
> _______________________________________________
> 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: 9
Date: Fri, 28 Feb 2014 13:50:22 -0600
From: Jonny 290 <jonny290@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Inverted-V turnstile idea
Message-ID:
<CALVMnS9=0+xx4b1cYxEweLy3yXLQYRcKw66Ezyv=sbECr06kHw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I had an idea pop in my head for a simple turnstile antenna, and am not
finding much info on what I want to do via Google searches I wanted to
bounce this off the list and see what people think.
My idea consists of three main points:
-Antenna elements being conventional (non-folded) inverted V dipoles,
tuning the length for resonance and angle to set at 50 ohms each
-1/4 wave 50 ohm phasing line between the sets of dipoles
-Feed via DK7ZB match using a 1/4 wave paralleled 2x75 ohm line section (37
ohms), transforming the 25 ohms back up to right around 50 ohms for final
feed
This approach would give the following advantages:
-Lower SWR than standard 75-ohm parallel turnstiles
-Dipoles could be individually tuned via direct 50 ohm feed during
construction
-DK7ZB match is constructed out of inexpensive 75-ohm coax
-Phasing line length would only affect phase, instead of phase and
impedance.
My main question, though is: With dipole elements canted down roughly 35
degrees from vertical (what I'm ballparking to get them down to 50 ohms),
am I going to see noticeably degraded performance, especially regarding the
polarization?
Thanks for any tips or discussion!
--Matt
KC4YLV
------------------------------
_______________________________________________
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 9, Issue 74
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