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CX2SA > SATDIG 26.05.09 20:03l 664 Lines 18138 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: Hawksat? (Lee McLamb)
2. Re: tuning CP-6 (Alan P. Biddle)
3. 25th Anniversary of Ham Radio in Space (Dirgantara YF?EEE)
4. Re: 25th Anniversary of Ham Radio in Space
(Ransom, Kenneth G. (JSC-OC)[BARRIOS TECHNOLOGY])
5. Re: tuning CP-6 (Bryan Klofas)
6. ND9M Mobile Grid Square Trip (claryco@xxx.xxxx
7. Re: ND9M Mobile Grid Square Trip
(Patrick STODDARD (WD9EWK/VA7EWK))
8. Optimal Distance (Norman W Osborne)
9. Re: tuning CP-6 (Alan P. Biddle)
10. Gulf Alpha antenna (Norman W Osborne)
11. Re: Gulf Alpha antenna (PE0SAT)
12. Re: Gulf Alpha antenna (vk5alx@xxxxx.xxxx
13. Calculation of foundation requirements for dish antenna
(Pieter Kotze)
14. Re: Optimal Distance (Edward Cole)
15. looking for Bob Twiggs (Nick)
16. Re: looking for Bob Twiggs (Nigel Gunn G8IFF/W8IFF)
17. Antenna questions (Joe Hayes)
----------------------------------------------------------------------
Message: 1
Date: Sun, 24 May 2009 16:19:32 -0400
From: Lee McLamb <ku4os@xxx.xx.xxx>
Subject: [amsat-bb] Re: Hawksat?
To: amsat-bb@xxxxx.xxx
Message-ID: <200905241619.32407.ku4os@xxx.xx.xxx>
Content-Type: Text/Plain; charset="iso-8859-1"
My understanding is that Hawksat is only commanded on when over their ground
station on the Maryland Eastern Shore.
I'm also curious who the licensed trustee is since the person they listed as
the contact on their IARU coordination request is no longer with them.
Lee-KU4OS
On Sunday 24 May 2009 07:39:45 Wouter Jan Ubbels wrote:
> Hi all,
>
> I have been able to receive CP6 and Pharmasat beacons over the last days
> without any problems, but have not yet heard Hawksat. Has anyone succeeded
> in hearing it / is there any info regarding its status?
>
> 73
>
> Wouter Jan Ubbels PE4WJ
> _______________________________________________
> 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: 2
Date: Sun, 24 May 2009 16:26:37 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] Re: tuning CP-6
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <62B65922F8B84C3F8B74C211342C280E@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Got a good pass at 2032 UTC today, with several data bursts decoded. I did
notice once when the CW ident and data burst repeated within a few seconds,
and another time when there were two CW idents, but no data. The intervals
were back to 1 minute. Perhaps they were commanding the satellite?
Alan
WA4SCA
------------------------------
Message: 3
Date: Mon, 25 May 2009 04:34:57 +0700
From: Dirgantara YF?EEE <enggi1401@xxxxx.xxx>
Subject: [amsat-bb] 25th Anniversary of Ham Radio in Space
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <004901c9dcb7$85f3c0c0$18c13a72@xxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
hi All
any body already receive certificate ? 25 th aniversary of ham radio in
Space
until now I don't receive a certificate, to where/who I must checking ? for
confrimation my QSL card already receive in ARRL ?
my qsl card send Nov orDec 2008 to ARRL HQ.
thanks
Dirgan YF0EEE - now YE0EEE
------------------------------
Message: 4
Date: Sun, 24 May 2009 17:04:52 -0500
From: "Ransom, Kenneth G. (JSC-OC)[BARRIOS TECHNOLOGY]"
<kenneth.g.ransom@xxxx.xxx>
Subject: [amsat-bb] Re: 25th Anniversary of Ham Radio in Space
To: Dirgantara YF?EEE <enggi1401@xxxxx.xxx>, AMSAT-BB
<amsat-bb@xxxxx.xxx>
Message-ID:
<CBB2346C58D9B14983E5AEFE4B345886318B3F4D2C@xxxxxxxxx.xxx.xxxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
An update was sent out in early May. You can read it at
http://www.amsat.org/amsat/archive/sarex/100day/msg10565.html
Kenneth - N5VHO
________________________________________
From: amsat-bb-bounces@xxxxx.xxx [amsat-bb-bounces@xxxxx.xxxx On Behalf Of
Dirgantara YF?EEE [enggi1401@xxxxx.xxxx
Sent: Sunday, May 24, 2009 4:34 PM
To: AMSAT-BB
Subject: [amsat-bb] 25th Anniversary of Ham Radio in Space
hi All
any body already receive certificate ? 25 th aniversary of ham radio in
Space
until now I don't receive a certificate, to where/who I must checking ? for
confrimation my QSL card already receive in ARRL ?
my qsl card send Nov orDec 2008 to ARRL HQ.
thanks
Dirgan YF0EEE - now YE0EEE
_______________________________________________
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: Sun, 24 May 2009 21:06:41 -0700
From: Bryan Klofas <bklofas@xxxxx.xxx>
Subject: [amsat-bb] Re: tuning CP-6
To: APBIDDLE@xxxxxxx.xxx
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <4A1A1951.2050309@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hey Alan--
Nope, we weren't commanding the satellite. We have noticed some timing
problems; it is supposed to beacon every 1 minute, but it seems like the
timer gets reset once every 20 minutes or so. Not sure why it resets.
When the CW beacon transmits but there is no AX.25 follow-up, there was
a problem with the I2C bus on board; the Comm PICs couldn't get data
from the main processor on board, so they just CW beacon and stop (time
out waiting). You should see the I2C error counter increment by several
counts the next beacon (if you are running the CPX Decoder software.
--
Bryan Klofas, KF6ZEO
Alan P. Biddle wrote:
> Got a good pass at 2032 UTC today, with several data bursts decoded. I did
> notice once when the CW ident and data burst repeated within a few seconds,
> and another time when there were two CW idents, but no data. The intervals
> were back to 1 minute. Perhaps they were commanding the satellite?
>
> 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: 6
Date: Mon, 25 May 2009 00:10:21 -0400
From: claryco@xxx.xxx
Subject: [amsat-bb] ND9M Mobile Grid Square Trip
To: claryco@xxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<8CBAB05DB390DA0-19F8-1C0E1@xxxxxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hi,
I'm taking the long way back to the home QTH (EM70) from central Tennessee
(EM65) where I attended a geocaching "festival" this weekend. I'll be
operating from a bunch of grid squares?on AO-51,?SO-50, and AO-27?while
geocaching along the way.
I'll hit any pass that reaches 15 degrees or better at my QTH. I'm using a 5-
watt HT and Arrow-2 on this trip, so I won't have any particular mucle.
Unless (until?) I get the phone call from the Boss telling me that the grass
needs to be cut, I'm hoping to be on from the following grid squares, starting
tomorrow morning (5/25):
EM66, EM56, EM46, EM45, EM55, EM54, EM44, EM43, EM53, EM52, EM42, EM41, EM51,
EM40, EM50, EM60
Road and weather conditions permitting, this is the intended sequence over the
next four days. Nothing is chiseled in concrete, but hopefully Murphy's Law
will take a few days off. (Yeah, right...)
CU on the birds,
73,
Jim, ND9M
------------------------------
Message: 7
Date: Sun, 24 May 2009 21:23:24 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] Re: ND9M Mobile Grid Square Trip
To: amsat-bb@xxxxx.xxx
Message-ID:
<2e18ad3e0905242123k55220f8cm97baf09ad8925d83@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Jim!
> I'm taking the long way back to the home QTH (EM70) from central
> Tennessee (EM65) where I attended a geocaching "festival" this
> weekend. I'll be operating from a bunch of grid squares on AO-51,
> SO-50, and AO-27 while geocaching along the way.
>
> I'll hit any pass that reaches 15 degrees or better at my QTH. I'm
> using a 5-watt HT and Arrow-2 on this trip, so I won't have any
> particular mucle.
>
><snip>
Nice to hear you on from different grids so far this weekend. With
this message in mind, I'll hold off on sending QSLs for a few days.
Then I can make sure to send one request for QSOs we made on
your trip. I'm sure you'll make a bunch of satellite grid hunters
happy with your trip. :-)
Good luck and 73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 8
Date: Mon, 25 May 2009 06:39:05 -0400
From: Norman W Osborne <ve3cje@xxxxx.xxx>
Subject: [amsat-bb] Optimal Distance
To: amsat-bb <AMSAT-BB@xxxxx.xxx>
Message-ID:
<4fa78c6b0905250339l2e05f166s33ef7432bc96bd85@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hello everyone,
I am looking for suggestions for optimal distance between X yagi's
on a boom, so that there will be none or very little interaction with their
respective radiation fields.
Also I will be adding a 24" dish between the two yagi's
on the same boom with the 70cm and 2 meter X yagi.
Thanks to all in advance
Norman.
------------------------------
Message: 9
Date: Mon, 25 May 2009 06:06:08 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] Re: tuning CP-6
To: "'Bryan Klofas'" <bklofas@xxxxx.xxx>
Cc: 'AMSAT-BB' <amsat-bb@xxxxx.xxx>
Message-ID: <176644DBC22E4ACD873619E702F2D436@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Bryan,
Thanks for the clarification. I am starting to try and pick out the
patterns.
73s,
Alan
WA4SCA
------------------------------
Message: 10
Date: Mon, 25 May 2009 07:17:58 -0400
From: Norman W Osborne <ve3cje@xxxxx.xxx>
Subject: [amsat-bb] Gulf Alpha antenna
To: amsat-bb <AMSAT-BB@xxxxx.xxx>
Message-ID:
<4fa78c6b0905250417h22458397v1ed0ebc0288621be@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Is there anyone using Gulf Alpha antenna's?
I am looking for feedback as I am considering buying the 70cm X yagi.
73,
Norman.
------------------------------
Message: 11
Date: Mon, 25 May 2009 13:26:12 +0200
From: "PE0SAT" <pe0sat@xxxxx.xx>
Subject: [amsat-bb] Re: Gulf Alpha antenna
To: "Norman W Osborne" <ve3cje@xxxxx.xxx>
Cc: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID:
<aa1c0f9970cfac8220ba5a471ab73189.squirrel@xxxxxxx.xxxxx.xx>
Content-Type: text/plain;charset=iso-8859-1
On Mon, May 25, 2009 13:17, Norman W Osborne wrote:
Hi Norman,
I am looking for the samen information.
So can you keep me in the loop if there is some news.
They really look great :))
> Is there anyone using Gulf Alpha antenna's?
>
> I am looking for feedback as I am considering buying the 70cm X yagi.
One of the other questions I have, "2m Satellite 2x5 does it have enough
gain to work the birds?
> 73,
> Norman.
73's Jan - PE0SAT
------------------------------
Message: 12
Date: Mon, 25 May 2009 21:48:02 +0930
From: vk5alx@xxxxx.xxx
Subject: [amsat-bb] Re: Gulf Alpha antenna
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Message-ID: <225094136.20090525214802@xxxx.xxx>
Content-Type: text/plain; charset=iso-8859-15
I use a homebrew 2x5 on a 2 metre long boom and it works very well
with all current sats.
73s, Alex VK5ALX
>One of the other questions I have, "2m Satellite 2x5 does it have enough
>gain to work the birds?
>
> 73,
> Norman.
>73's Jan - PE0SAT
------------------------------
Message: 13
Date: Mon, 25 May 2009 15:48:28 +0200
From: "Pieter Kotze" <PKotze@xxxx.xx.xx>
Subject: [amsat-bb] Calculation of foundation requirements for dish
antenna
To: <amsat-bb@xxxxx.xxx>
Message-ID: <4A1ABDCC.A154.0020.0@xxxx.xx.xx>
Content-Type: text/plain; charset=US-ASCII
Hello all
Anyone out there got a rough guide to calculate the foundation requirements
for a parabolic dish antenna?
We have acquired a 10m C-band dish which we would like to re-use. I am a bit
rusty on undergraduate applied mathematics.
Anyone with a nice tutorial?
Regards
Pieter
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Message: 14
Date: Mon, 25 May 2009 06:38:04 -0800
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Optimal Distance
To: Norman W Osborne <ve3cje@xxxxx.xxx>, amsat-bb <AMSAT-BB@xxxxx.xxx>
Message-ID: <200905251438.n4PEc4n5072488@xxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 02:39 AM 5/25/2009, Norman W Osborne wrote:
>Hello everyone,
>
>I am looking for suggestions for optimal distance between X yagi's
>on a boom, so that there will be none or very little interaction with their
>respective radiation fields.
>
>Also I will be adding a 24" dish between the two yagi's
>on the same boom with the 70cm and 2 meter X yagi.
>
>Thanks to all in advance
>Norman.
Norman,
Since I have not seen any response to you on amsat-bb, I will.
First we need to know the aperture of the antennas. This will have
to be calculated from the gain. Unfortunately, most antenna
manufacturers are optimistic about the gain of their antenna. But if
you have the gains in dBd:
1. Convert to dBi = 2.1 + dBd
2. Convert gain to a ratio G = 10^(dBi/10)
2. Use this formula G = 4*pi*Ae/lambda^2 to derive Ae
3. Ae = G*lambda^2/(4*pi) = G*4.33/12.56 = 3.45*G
4. Ae for x-yagi is assumed a circle: Ae = pi*R^2
5. R = sqrt(Ae/3.14), R is the width of your aperture so half that
would be used for stacking distance.
6. The distance between 2m and 70cm antenna = 1/2 (R(2m) + R(70cm))
The dish will probably sit inside the 2m aperture but be outside the
aperture of the 70cm antenna. I mounted my 436CP42 and 2m antennas
five feet apart with the 33-inch dish set on the UHF side of the
B5400 az-el rotator. This is probably closer than using the
apertures for stacking.
------------------------------
Message: 15
Date: Mon, 25 May 2009 09:56:02 -0500
From: "Nick" <quadpugh@xxxxxxxxx.xxx>
Subject: [amsat-bb] looking for Bob Twiggs
To: <amsat-bb@xxxxx.xxx>
Message-ID: <012e01c9dd48$ec8a7310$c59f5930$@xxx>
Content-Type: text/plain; charset="US-ASCII"
Can somebody on the list please send me Bob Twiggs contact info
\\\
Thanks
nick
------------------------------
Message: 16
Date: Mon, 25 May 2009 15:01:05 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: looking for Bob Twiggs
To: Nick <quadpugh@xxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4A1AB2B1.8000807@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
You should've asked Google.
Voice:
(650) 723-8651
Fax:
(650) 723-1685
E-mail:
Bob.Twiggs@xxxxxxxx.xxx
U.S. Mail:
Prof. Bob Twiggs
Space Systems Development Laboratory
Durand 271
Aeronautics & Astronautics
496 Lomita Mall
Stanford University
Stanford, CA 94305-4035
USA
Nick wrote:
> Can somebody on the list please send me Bob Twiggs contact info
>
> \\\
>
>
>
>
>
> Thanks
>
>
>
> nick
>
> _______________________________________________
> 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
>
>
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
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>
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail nigel@xxxxx.xxx www
http://www.ngunn.net
Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club
International #385,
Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK, MKARS, ALC,
GCARES, XWARN
------------------------------
Message: 17
Date: Mon, 25 May 2009 09:36:34 -0700 (PDT)
From: Joe Hayes <wd9apy@xxxxx.xxx>
Subject: [amsat-bb] Antenna questions
To: amsat-bb@xxxxx.xxx
Message-ID: <751302.14365.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Hello Everyone,
?
I am new to the list (I'm sure you could have guessed that on your own)
?
After 30+ years of?being away from satellite work I have decided it's time to
get back into it..
I used to work AO-6 AO-7,RS-15,ect..
Had an old Ameco TX-62 Xmit and used my "new" Kenwood 599D twins for downlink.
?
I have looked for a week or better to find answers but still have several I
can't find.
?
I will be using the old (rebuilt) Cushcraft A144-T10 and a new homebrew 22
element 70 cm (11 vert, 11horz).
?
?
1. What circular polarization should I be using, LH or RH?
??? I will not have polarization switching (at least not for a while)
2. What is?good software for my Yaesu G-5400B rotator?
3. What is a good Interface for my Yeasu G-5400B rotator?
4. Need some good links for reference.
?
?
thanks..
?
?
de wd9apy
?
?
?
------------------------------
_______________________________________________
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 4, Issue 241
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