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CX2SA > SATDIG 20.03.08 02:00l 731 Lines 30871 Bytes #999 (0) @ WW
BID : 52971-CX2SA
Read: GUEST
Subj: AMSAT-BB-digest V3 144
Path: IZ3LSV<IW2OHX<IR2UBX<IV3SCP<SR1BSZ<SP7MGD<CX2SA
Sent: 080319/2337Z @:CX2SA.LAV.URY.SA #:52971 [Minas] FBB7.00e $:52971-CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Coax run on the Beams (Prathap Kumar)
2. fascinating - gravity math inaccurate, as shown by
spacecraft (Nate Duehr)
3. Re: General Astrodynamics Library (Willmott, Paul)
4. Re: Arthur C. Clarke Dies at Age 90 (Edward Cole)
5. Fw: Replacement KLM 2M-14C matching harness coax? (i8cvs)
6. Re: Courteous AO-51 Operation (Robert Turlington)
7. HQ8R still qrv - grid EK87 (Bill Dzurilla)
8. Re: Courteous AO-51 Operation (Ben Jackson)
9. Re: Courteous AO-51 Operation (David Goncalves)
----------------------------------------------------------------------
Message: 1
Date: Wed, 19 Mar 2008 12:40:05 +0530
From: "Prathap Kumar" <vu2pop(AT)gmail.com>
Subject: [amsat-bb] Re: Coax run on the Beams
To: <amsat-bb(AT)amsat.org>
Message-ID: <00f301c88990$44cf9590$2201a8c0(AT)p9c9fa16b80794>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
Dear Edward, Domenico, John & Louis
Thank you all for the various inputs and knowledge.
Yes I am using cross yagis one for V and the other for U and the boom is
metalic while the cross arm is a fibreglass tube.
Will study all your ideas and try out the bext.
Thank you all once again.
Best 73
Pop
VU2POP
------------------------------
Message: 2
Date: Wed, 19 Mar 2008 01:21:46 -0600
From: Nate Duehr <nate(AT)natetech.com>
Subject: [amsat-bb] fascinating - gravity math inaccurate, as shown
by spacecraft
To: Amsat-Bb <amsat-bb(AT)amsat.org>
Message-ID: <FDD91228-0EED-4565-AC93-4B0CCC9F063F(AT)natetech.com>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
http://www.economist.com/science/displaystory.cfm?story_id=10804075
So-called "slingshot" maneuvers produce a tiny amount more speed than
current known gravity models allow for... 4mm/sec... and the deep
space and other probes that have used the maneuver have all seen the
effect.
Unexplained little gravity phenomenon. Very interesting.
--
Nate Duehr, WY0X
nate(AT)natetech.com
------------------------------
Message: 3
Date: Wed, 19 Mar 2008 08:24:43 -0300
From: "Willmott, Paul" <Paul.Willmott(AT)omsl.bm>
Subject: [amsat-bb] Re: General Astrodynamics Library
To: "Geoff" <vk2tfg(AT)ozemail.com.au>, "Jonathan Wagner"
<jonathan(AT)jonathanwagner.net>
Cc: amsat-bb(AT)amsat.org
Message-ID:
<1E35EF2109FC1140B9F81F475F40B3572BF4DD(AT)EXCHCLU01.omslnetwork.bm>
Content-Type: text/plain; charset="us-ascii"
Gentlemen,
Jonathon, thanks for the fix, I'll add it to the next release. I tested
this make on OSX and cygwin and the flags were not needed, I'm
downloading Debian now to run under parallels on the mac so will be able
to test for linux requirements in future.
Geoeff, GAL is intended to be a super-set of routines that may or may
not be of use to astrodynamics experimenters. David's work on bringing
SGP4 up-to-date will be included, albeit in a slightly modified form -
it will be altered to be compatible with the gal vector/matrix library
and reference frame implementations. GAL will also eventually include
direct numerical integration, i.e. orbit propagation direct from gravity
and other force models. This will allow orbit propagation for bodies
other than the Earth, e.g. the Moon and Mars (Phase 5A).
Its going to be a long project, and I've got no timetable, I'll release
as each block gets bolted down.
A lot of what is going into GAL is based upon research done for the
Station Program version 2 ( an aborted project from the early 1990s).
If you like David's book then I would recommend this one strongly, it is
easier to work through, and includes a CD with all the worked examples
in C++.
http://www.amazon.com/Satellite-Orbits-Models-Methods-Applications/dp/35
4067280X/ref=sr_1_1?ie=UTF8&s=books&qid=1205925623&sr=1-1
73 Paul, VP9MU
-----Original Message-----
From: Geoff [mailto:vk2tfg(AT)ozemail.com.au]
Sent: Wednesday, March 19, 2008 4:03 AM
To: Jonathan Wagner; Willmott, Paul
Subject: Re: [amsat-bb] Re: General Astrodynamics Library
Hi Gents
My bad sending to the -bb. I intended to send to Paul direct .
Jonathon, your
fix appeared to work perfectly. Paul how does your work compare to that
of
Vallado? I have his book and have downloaded his routines but I don't
have
the skill to do much more than read through them. :-)
73 de Geoff vk2tfg.
On Wednesday 19 March 2008 08:16, you wrote:
> I don't have time to check the library out now, but it looks like your
> errors stem from a makefile issue. It looks like the makefile isn't
> explicitly telling the compiler to link the math library in. Try
adding
> `CFLAGS="-lm" before the ./configure command.
>
> prompt$ CFLAGS="-lm" ./configure
>
> If that works then editing the auomake.in or the automake.am files to
> add this flag should take care of this for most people. But, that
would
> be a task for Paul.
>
> BTW, I had nothing to do with writing this library, but just thought I
> would help out a fellow ham. I don't want to steal any of Paul's
> thunder; I don't even know him.
>
> Jonathan Wagner
>
> Geoff wrote:
> > On Wednesday 19 March 2008 04:58, Willmott, Paul wrote:
> >> Hi All,
> >>
> >> I've been working on a general c/c++ astrodynamics library. It is
> >> strictly a work in progress, and so far only includes the basic
> >> astronomy routines. Next up will be the orbit propagators, and
tracking
> >> stuff. Anyway, its time for it to see the outside world. It can be
> >> downloaded from here:
> >>
> >> http://homepage.mac.com/pclwillmott/GAL/index.html
> >>
> >> Its released under GPL 2 and was developed under OSX using the GNU
> >> development tools, so should compile OK on UNIX / GNU Linux / and
under
> >> cygwin in Windows.
> >>
> >> The routines are primitives, and it is deliberatly not framework
based,
> >> so you can rip bits for your projects without lots of baggage.
> >>
> >> Please let me know any comments.
> >
> > snipped
> >
> > Hi Paul,
> > I had a go at your GAL package on my Debian 4.0 hppa box.
Download,
> > unpack, configure, make and make install work well but make check
barfs
> > with the trace you'll see quoted below. I don't have the programming
> > skills to do anything with it but I'm always glad to try and break
> > software :-) .
> >
> > 73 de Geoff vk2tfg.
> >
> >> hppa:/home/vk2tfg/libgal-0.1.0# make check
> >> Making check in test
> >> make[1]: Entering directory `/home/vk2tfg/libgal-0.1.0/test'
> >> make[1]: Nothing to be done for `check'.
> >> make[1]: Leaving directory `/home/vk2tfg/libgal-0.1.0/test'
> >> Making check in vec_mat
> >> make[1]: Entering directory `/home/vk2tfg/libgal-0.1.0/vec_mat'
> >> make[1]: Nothing to be done for `check'.
> >> make[1]: Leaving directory `/home/vk2tfg/libgal-0.1.0/vec_mat'
> >> Making check in ephemerides
> >> make[1]: Entering directory `/home/vk2tfg/libgal-0.1.0/ephemerides'
> >> make[1]: Nothing to be done for `check'.
> >> make[1]: Leaving directory `/home/vk2tfg/libgal-0.1.0/ephemerides'
> >> Making check in pstrings
> >> make[1]: Entering directory `/home/vk2tfg/libgal-0.1.0/pstrings'
> >> make[1]: Nothing to be done for `check'.
> >> make[1]: Leaving directory `/home/vk2tfg/libgal-0.1.0/pstrings'
> >> Making check in star
> >> make[1]: Entering directory `/home/vk2tfg/libgal-0.1.0/star'
> >> make[1]: Nothing to be done for `check'.
> >> make[1]: Leaving directory `/home/vk2tfg/libgal-0.1.0/star'
> >> Making check in eao
> >> make[1]: Entering directory `/home/vk2tfg/libgal-0.1.0/eao'
> >> make[1]: Nothing to be done for `check'.
> >> make[1]: Leaving directory `/home/vk2tfg/libgal-0.1.0/eao'
> >> Making check in date_time
> >> make[1]: Entering directory `/home/vk2tfg/libgal-0.1.0/date_time'
> >> make[1]: Nothing to be done for `check'.
> >> make[1]: Leaving directory `/home/vk2tfg/libgal-0.1.0/date_time'
> >> make[1]: Entering directory `/home/vk2tfg/libgal-0.1.0'
> >> make gal_tdatetime gal_tvecmat gal_tprecnut gal_tearthrot
> >> gal_tephemerides gal_tpstrings gal_tstar make[2]: Entering
directory
> >> `/home/vk2tfg/libgal-0.1.0'
> >> gcc -DHAVE_CONFIG_H -I. -Itest -g -O2 -c -o gal_tdatetime.o
`test -f
> >> 'date_time/gal_tdatetime.c' || echo './'`date_time/gal_tdatetime.c
In
> >> file included from date_time/gal_tdatetime.c:44:
> >> test/gal_test_common.h:78:3: warning: no newline at end of file
> >> In file included from test/gal_test.h:38,
> >> from date_time/gal_tdatetime.c:45:
> >> test/gal_test_start.h:93:3: warning: no newline at end of file
> >> In file included from test/gal_test.h:39,
> >> from date_time/gal_tdatetime.c:45:
> >> test/gal_test_stop.h:82:3: warning: no newline at end of file
> >> In file included from test/gal_test.h:40,
> >> from date_time/gal_tdatetime.c:45:
> >> test/gal_vcv.h:92:3: warning: no newline at end of file
> >> In file included from test/gal_test.h:41,
> >> from date_time/gal_tdatetime.c:45:
> >> test/gal_vdv.h:94:3: warning: no newline at end of file
> >> In file included from test/gal_test.h:42,
> >> from date_time/gal_tdatetime.c:45:
> >> test/gal_viv.h:92:3: warning: no newline at end of file
> >> In file included from test/gal_test.h:43,
> >> from date_time/gal_tdatetime.c:45:
> >> test/gal_vsv.h:92:3: warning: no newline at end of file
> >> In file included from date_time/gal_tdatetime.c:45:
> >> test/gal_test.h:70:3: warning: no newline at end of file
> >> date_time/gal_tdatetime.c:110:3: warning: no newline at end of file
> >> /bin/sh ./libtool --tag=CC --mode=link gcc -g -O2 -o
gal_tdatetime
> >> gal_tdatetime.o libgal_test.la libgal.la libtool: link: gcc -g -O2
-o
> >> .libs/gal_tdatetime gal_tdatetime.o ./.libs/libgal_test.a
> >> ./.libs/libgal.so -Wl,-rpath -Wl,/usr/local/lib ./.libs/libgal.so:
> >> undefined reference to `sqrt'
> >> ./.libs/libgal.so: undefined reference to `floor'
> >> ./.libs/libgal.so: undefined reference to `fmod'
> >> ./.libs/libgal.so: undefined reference to `cos'
> >> ./.libs/libgal.so: undefined reference to `sin'
> >> ./.libs/libgal.so: undefined reference to `atan2'
> >> ./.libs/libgal.so: undefined reference to `pow'
> >> ./.libs/libgal.so: undefined reference to `atan'
> >> collect2: ld returned 1 exit status
> >> make[2]: *** [gal_tdatetime] Error 1
> >> make[2]: Leaving directory `/home/vk2tfg/libgal-0.1.0'
> >> make[1]: *** [check-am] Error 2
> >> make[1]: Leaving directory `/home/vk2tfg/libgal-0.1.0'
> >> make: *** [check-recursive] Error 1
> >> hppa:/home/vk2tfg/libgal-0.1.0#
> >
> > _______________________________________________
> > 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: 4
Date: Wed, 19 Mar 2008 06:44:39 -0800
From: Edward Cole <kl7uw(AT)acsalaska.net>
Subject: [amsat-bb] Re: Arthur C. Clarke Dies at Age 90
To: AMSAT-BB <amsat-bb(AT)amsat.org>
Message-ID: <200803191444.m2JEieWC035901(AT)malik.acsalaska.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Considering Sir Arthur's origination of the concept, I would like to
propose naming our first P4 (geostationary) satellite in honor of
Arthur C. Clarke. Would Amsat BOD consider a declaration to this effect?
73, Ed - KL7UW
At 09:29 PM 3/18/2008, Eric Rosenberg wrote:
> From the Washington Post
>
>-----------------------------
>
>Arthur C. Clarke; Sci-Fi Writer Foresaw Mankind's Possibilities
>
>By Patricia Sullivan
>Washington Post Staff Writer
>Wednesday, March 19, 2008; B07
>
>Arthur C. Clarke, 90, the world-famous science-fiction writer, futurist
>and unofficial poet laureate of the space age, died of a respiratory
>ailment March 18 at his home in Colombo, Sri Lanka.
>
>Mr. Clarke co-wrote, with director Stanley Kubrick, the screenplay for
>"2001: A Space Odyssey," which is regarded by many as one of the most
>important science fiction films made. A prolific writer, with more than
>100 published books, he was praised for his ability to foresee the
>possibilities of human innovation and explain them to non-scientific
>readers.
>
>The most famous example is from 1945, when he first proposed the idea of
>communications satellites that could be based in geostationary orbits,
>which keep satellites in a fixed position relative to the ground.
>
>Some scoffed, but the idea was proved almost a generation later with the
>launch of Early Bird, the first of the commercial satellites that
>provide global communications networks for telephone, television and
>high-speed digital communication. The orbit is now named Clarke Orbit by
>the International Astronomical Union.
>
>"He had influenced the world in the best way possible," writer Ray
>Bradbury said in Neil McAleer's 1992 book "Arthur C. Clarke: The
>Authorized Biography." "Arthur's ideas have sent silent engines into
>space to speak in tongues. His fabulous communications satellite
>ricocheted about in his head long before it leaped over the mountains
>and flatlands of the Earth."
>
>In addition to his books, he wrote more than 1,000 short stories and
>essays. One of his short stories, "Dial F for Frankenstein" (1964),
>inspired British computer scientist Tim Berners-Lee to invent the World
>Wide Web in 1989.
>
>Mr. Clarke also popularized the idea of a space elevator as an
>energy-efficient alternative to rockets. Conceived by a Russian engineer
>in 1960 and re-invented at least four times in the next decades, Mr.
>Clarke's inclusion of the idea in a 1979 novel brought it to popular
>attention and helped launch a new field of study. He told New Scientist
>magazine last year that it would be built "50 years after everyone stops
>laughing."
>
>But it was his collaboration with Kubrick in the 1968 film that made him
>internationally famous. The screenplay for "2001: A Space Odyssey" was
>based on Mr. Clarke's 1951 short story "The Sentinel," and Mr. Clarke
>simultaneously wrote the companion novel, which was released three
>months after the film and was believed by many to be a more detailed
>explanation of the ideas in the film.
>
>Mr. Clarke's work inspired the names of spacecraft, an asteroid and a
>species of dinosaur. He joined American broadcaster Walter Cronkite as a
>commentator on the Apollo moonshots in the late 1960s. Two television
>series in the 1980s spread his ideas around the world.
>
>He was knighted in 1998, nominated for the Nobel Peace Prize in 1994 and
>received the Franklin Institute gold medal, the United Nations
>Educational, Scientific and Cultural Organization-Kalinga Prize and
>other honors.
>
>Mr. Clarke, a resident of Sri Lanka since 1956, worked with Jacques
>Cousteau and others to help perfect scuba equipment. He moved to the
>country, then known as Ceylon, to open a dive shop and explore the
>undersea world. Disabled by post-polio syndrome, the lingering effects
>of a disease that had paralyzed him for two months in 1959, Mr. Clarke
>said diving was as close as he could get to the weightless feeling of space.
>
>"I'm perfectly operational underwater," he once said.
>
>His dive shop was destroyed in the 2004 tsunami.
>
>Born Dec. 17, 1917, in Minehead, Somerset, England, he was the son of a
>postal service engineer turned farmer and a post office telegrapher. He
>became addicted to science fiction at 11.
>
>In 1936, he moved to London and joined the British Interplanetary
>Society and began writing science fiction. After enlisting in the Royal
>Air Force in 1941, he became a radar instructor and participated in the
>development of ground-controlled landings of aircraft under
>zero-visibility conditions. That experience proved the inspiration for
>his only non-science-fiction novel, "Glide Path."
>
>It is also where, in 1945, he wrote an RAF memo about satellites. He
>later revised it and submitted it as "Extra-Terrestrial Relays" to
>Wireless World, which almost rejected it as too far-fetched. He was
>wrong about some things: He expected that three satellites would take
>care of the world's communication needs and that each would require a
>crew in residence.
>
>After World War II, Mr. Clarke obtained a bachelor of science degree in
>physics and mathematics at King's College, London.
>
>In 1954, Mr. Clarke wrote to Harry Wexler, then chief of the Scientific
>Services Division at the U.S. Weather Bureau, about satellite
>applications for weather forecasting. From these discussions, a new
>branch of meteorology was born.
>
>Mr. Clarke's marriage to Marilyn Mayfield ended in divorce. Survivors
>include a brother and sister, both of whom live in England.
>
>According to a news release from the Arthur C. Clarke Foundation, Mr.
>Clarke reviewed the final manuscript of his latest science fiction
>novel, "The Last Theorem," a few days ago. It is scheduled to be
>published later this year.
>
>Although he rarely left Sri Lanka, he kept in touch with the rest of the
>world by using the satellite communication he predicted so long ago. He
>told the Associated Press that he didn't regret never going into space
>because he had arranged to have the DNA from his hair sent into orbit.
>
>"Some day, some super civilization may encounter this relic from the
>vanished species and I may exist in another time," he said.
>
>In a 90th birthday video recorded in December, Mr. Clarke said he had
>only three last wishes: That someone find evidence of extraterrestrial
>life; that the world adopt clean energy sources; and that an end be
>found to the long civil war in Sri Lanka.
>
>"I'm sometimes asked how I would like to be remembered. I've had a
>diverse career as a writer, underwater explorer, space promoter and
>science populariser," he said. "Of all these, I want to be remembered
>most as a writer -- one who entertained readers, and, hopefully,
>stretched their imagination as well."
>_______________________________________________
>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: 5
Date: Wed, 19 Mar 2008 16:03:55 +0100
From: "i8cvs" <domenico.i8cvs(AT)tin.it>
Subject: [amsat-bb] Fw: Replacement KLM 2M-14C matching harness
coax?
To: "Ken Swaggart" <k.swaggart(AT)charter.net>, "AMSAT-BB"
<amsat-bb(AT)amsat.org>
Message-ID: <010401c889d2$73da8f60$0201a8c0(AT)tin.it>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Ken Swaggart" <k.swaggart(AT)charter.net>
To: "AMSAT-BB" <amsat-bb(AT)amsat.org>
Sent: Wednesday, March 19, 2008 12:49 AM
Subject: [amsat-bb] Replacement KLM 2M-14C matching harness coax?
> It's time to rebuild my Oscar 10 vintage KLM 2M-14C matching harness.
There
> are no markings on the original harness but it has teflon insulation and I
> assume it is 75 Ohm. Anyone have the replacement info? I'd prefer to use
> teflon cable. The antenna manual doesn't describe the matching harness.
>
> Tnx,
> Ken, W7KKE
>
Hi Ken, W7KKE
The balun across each folded dipole is made with 50 ohm RG-303 teflon
insulated coax cable, velocity factor 0.694
The phasing coupling harness is made with two matching lines of 75 ohm
RG-302 teflon insulated coax cable, velocity factor 0.694
The polarity switcher is a relay Guardian Electric WJ MFG Corp 1365 series
12 V dc A410-364385-00
Due of the lenght of relay the lenght of coax RG-302 going from relay to the
50 ohm unbalance feed is critical to be 1/4 electrical wave long beginning
from the folded dipole so that use only 75 ohm RG-302 or any other type
of 75 ohm teflon insulated coax with the same lenght as the original one.
For water protection it is necessary to enclose the PCB and relay into an
additional plastic box and if anyone is interested on it I can send a set of
pics showing my own installation.
73" de
i8CVS Domenico
------------------------------
Message: 6
Date: Wed, 19 Mar 2008 15:15:55 +0000
From: Robert Turlington <rob_g8ate(AT)hotmail.com>
Subject: [amsat-bb] Re: Courteous AO-51 Operation
To: "John Marranca, Jr" <kb2hsh(AT)amsat.org>, Amsat Buleitin Board
<amsat-bb(AT)amsat.org>
Message-ID: <BAY134-W221526239810C8FD5AD3E8C0070(AT)phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"
Hi John
my reply was in no way a critique of the article I just thought it should not
specifically refer to one particular single channel bird but to all. Of course
reference could be made to AO51 as a particularly bad example but so far as I
am concerned they are as bad as each other in one way or another. By the way I
am a regular on all of the birds single channel or linear ,for example 26
countries/4 continents worked on A16 and about 100 callsigns.Regards Robert
G8ATE > Date: Tue, 18 Mar 2008 17:51:48 -0400> From: KB2HSH(AT)amsat.org> To:
amsat-bb(AT)amsat.org> Subject: [amsat-bb] Re: Courteous AO-51 Operation> >
Good Afternoon, all...> > Robert, I think the main point that Ben is trying to
make with these> "friendly suggestions" is civility. Love the single-channel
FM satellites> or not, they are a fact of life throughout AMSAT. And AO-51 is
arguably the> worst as far as manners and good operating procedures are
concerned. This> doesn't mean that it doesn't happen on other single-ch!
annel birds.> > Consider this: You are trying to give a demo to a group
that's interested> in satellite-based Amateur Radio. You do your best to
convey ease of use,> technical skill and accomplishment, and the fact that
satellite hams in> general are a great bunch of guys...etc etc etc. Then, you
tune into AO-51> for the demo...and you hear "the Zoo".> > Some of it is just
common sense...like using headphones...not using too much> power (we ALL know
at least one person that does), but Ben worded some of> the suggestions to try
to "level the field", and help to make it more fair> for everyone.> > As our
fleet gets older, and more satellites become non-operational...and> more
Amateurs enter the ranks, the FM satellites will undoubtedly get worse,> more
crowded, etc. As this becomes reality, there are 3 routes to take to> solve
the "problem": A) Move to the Linear Satellites...B) Build more FM> Satellites
(which some will absolutely HATE)...or C) Learn to become a more> effici!
ent operator and get along with each other.> > Sadly, though...I have
a feeling that this will reignite the Linear Vs. FM> debate.> > > John KB2HSH>
> > > > -- > _______________________________> > > John Marranca, Jr> PBX
Technician/Shop Steward CWA Local 1122> BN Systems, Inc> Orchard Park, NY>
(716)972-2006> _______________________________________________> 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
_________________________________________________________________
Who's friends with who and co-starred in what?
http://www.searchgamesbox.com/celebrityseparation.shtml
------------------------------
Message: 7
Date: Wed, 19 Mar 2008 08:46:05 -0700 (PDT)
From: Bill Dzurilla <billdz.geo(AT)yahoo.com>
Subject: [amsat-bb] HQ8R still qrv - grid EK87
To: Bill Dzurilla <billdz.geo(AT)yahoo.com>, amsat-bb(AT)amsat.org
Cc: fm-satellite(AT)yahoogroups.com
Message-ID: <613087.95410.qm(AT)web51103.mail.re2.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
Have already worked a lot of folks on AO-51 and AO-27
and a couple on SO-50, still a couple of days left
although we will be leaving earlier than planned. I
am just using an HT and a hand-held Arrow so it's hard
to write and the log is probably inaccurate, so send
an email to billdz.geo(AT)yahoo.com if you have worked
HQ8R. Also if anyone has a recording of any of my
contacts, please email a copy.
Still working on getting an all mode for at least a
few passes on AO-7, AO-16, and VO-52.
73, Bill NZ5N and the whole HQ8R team
______________________________________________________________________________
______
Looking for last minute shopping deals?
Find them fast with Yahoo! Search.
http://tools.search.yahoo.com/newsearch/category.php?category=shopping
------------------------------
Message: 8
Date: Wed, 19 Mar 2008 11:51:15 -0400
From: Ben Jackson <bbj(AT)innismir.net>
Subject: [amsat-bb] Re: Courteous AO-51 Operation
To: Robert Turlington <rob_g8ate(AT)hotmail.com>
Cc: Amsat Buleitin Board <amsat-bb(AT)amsat.org>
Message-ID: <47E13673.4000108(AT)innismir.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
-----BEGIN PGP SIGNED MESSAGE-----
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Robert Turlington wrote:
| hi Ben
| have read your little piece on courteous AO51 Operation with interest
| and in general I toady agree with you, my only comment is why only AO51,
| because the other single channel satellites are almost as bad even the
| newly resurrected AO16 is a bit of a mad house a lot of the time here in
| Europe.
| I therefore suggest you rename your title as 'Courteous Single Channel
| Satellite Operation
|
Hi Robert:
John hit most of the points right on the head but I wanted to just toss
in my $0.02.
I singled out AO-51 for few reasons: A. It's the one I have the most
experience on, B. It seems to be the most popular EasySat, and C. It's
the most straightforward to operate.
SO-50, AO-27, and AO-16 all have their specific caveats in regard to
their on board timers, or their "different" operating mode. I have never
worked AO-27 or AO-16 and I didn't want to speak on a subject that I had
no experience with. SO-50 can actually violate "Don't transmit unless
you can't hear it" if the timer has expired, and I didn't want attempt
to make distinctions. Perhaps a SO-50 specific document might be in
order, but lets cross that bridge when we come to it.
AO-51 was singled out due to it's popularity, and my comfort level
talking about it. However, you are right, and most, if not all, of the
document can be applied to other single channel satellites.
~Ben
- --
Ben Jackson - N1WBV - New Bedford, MA
bbj <at> innismir.net - http://www.innismir.net/
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------------------------------
Message: 9
Date: Wed, 19 Mar 2008 13:01:03 -0400
From: "David Goncalves" <davegoncalves(AT)gmail.com>
Subject: [amsat-bb] Re: Courteous AO-51 Operation
To: amsat-bb(AT)amsat.org
Message-ID:
<efbd6ca10803191001r15d33cfbraa6991008353654c(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Perhaps we can get this in the AMSAT Journal?
David Goncalves
W1EUJ
On 3/19/08, Ben Jackson <bbj(AT)innismir.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Robert Turlington wrote:
> | hi Ben
> | have read your little piece on courteous AO51 Operation with interest
> | and in general I toady agree with you, my only comment is why only AO51,
> | because the other single channel satellites are almost as bad even the
> | newly resurrected AO16 is a bit of a mad house a lot of the time here in
> | Europe.
> | I therefore suggest you rename your title as 'Courteous Single Channel
> | Satellite Operation
> |
>
> Hi Robert:
>
> John hit most of the points right on the head but I wanted to just toss
> in my $0.02.
>
> I singled out AO-51 for few reasons: A. It's the one I have the most
> experience on, B. It seems to be the most popular EasySat, and C. It's
> the most straightforward to operate.
>
> SO-50, AO-27, and AO-16 all have their specific caveats in regard to
> their on board timers, or their "different" operating mode. I have never
> worked AO-27 or AO-16 and I didn't want to speak on a subject that I had
> no experience with. SO-50 can actually violate "Don't transmit unless
> you can't hear it" if the timer has expired, and I didn't want attempt
> to make distinctions. Perhaps a SO-50 specific document might be in
> order, but lets cross that bridge when we come to it.
>
> AO-51 was singled out due to it's popularity, and my comfort level
> talking about it. However, you are right, and most, if not all, of the
> document can be applied to other single channel satellites.
>
> ~Ben
>
> - --
> Ben Jackson - N1WBV - New Bedford, MA
> bbj <at> innismir.net - http://www.innismir.net/
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> _______________________________________________
> 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
>
--
David Goncalves
------------------------------
_______________________________________________
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!
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End of AMSAT-BB Digest, Vol 3, Issue 144
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