| |
CX2SA > SATDIG 12.04.11 20:04l 592 Lines 19076 Bytes #999 (0) @ WW
BID : AMSATBB6210
Read: GUEST
Subj: AMSAT-BB-digest V6 210
Path: IZ3LSV<IW8PGT<CX2SA
Sent: 110412/1801Z @:CX2SA.LAV.URY.SA #:64648 [Minas] FBB7.00e $:AMSATBB6210
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: satellite average elevation (Glen Zook)
2. arrisat1 no signals/signals (Bruce)
3. Nada 0706AM PDT (Clint Bradford)
4. ISS Deception Reports (Clint Bradford)
5. ARISS nothing heard 14:10UTC San Diego (Scott Rights)
6. Re: arrisat1 no signals/signals (n4csitwo@xxxxxxxxx.xxxx
7. ArisSAT-1nothing heard 14:57 UC South Africa (Allan Saul)
8. ASRISSat-1 (Carl Rimmer W8KRF)
9. ARRISSAt-1 not heard 15.10 UTC (Nitin Muttin)
10. Re: satellite average elevation (Bob Bruninga)
11. ARISSat-1 No Signal Reports (Peter Portanova)
12. Re: ArisSAT-1nothing heard 14:57 UC South Africa (Joe)
13. Frustration abt Arissat-1 (Petr Pakr)
14. Reception Reports (Clint Bradford)
15. Re: satellite average elevation (Glen Zook)
16. Dead Battery> (Clint Bradford)
17. Re: Reception Reports (Joe)
18. -VE copy is a +VE evaluation . (Nader Omer)
19. Remembering Another Spaceflight Anniversary (B J)
20. Lve issc overage (KF1BUZ)
----------------------------------------------------------------------
Message: 1
Date: Tue, 12 Apr 2011 06:43:11 -0700 (PDT)
From: Glen Zook <gzook@xxxxx.xxx>
Subject: [amsat-bb] Re: satellite average elevation
To: amsat-bb@xxxxx.xxxx Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Message-ID: <745088.33706.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Back in the "goode olde dayes" (i.e. OSCAR VI and OSCAR VII), before
elevation rotors were popular, we used a horizontally polarized yagi fixed
at 30 degrees above the horizon. That worked very well even for overhead
passes.
Glen, K9STH
Website: http://k9sth.com
--- On Tue, 4/12/11, Bob- W7LRD <w7lrd@xxxxxxx.xxx> wrote:
I saw on this bb a site or note that shows the overall?average elevatation.?
As I remember it elevation is surprisingly low for most passes.? Where can I
find it?
------------------------------
Message: 2
Date: Tue, 12 Apr 2011 06:59:32 -0700 (PDT)
From: Bruce <kk5do@xxxxx.xxx>
Subject: [amsat-bb] arrisat1 no signals/signals
To: amsat-bb@xxxxx.xxx
Message-ID: <773868.72411.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
I am curious why we need 100 reports that a signal was not heard? Would it not
be more beneficial to post nothing unless a signal was actually heard thereby
reducing the number of posts to the bb? also, please reply to this message
directly so as not to clutter the bb.
73...bruce
------------------------------
Message: 3
Date: Tue, 12 Apr 2011 07:19:49 -0700
From: Clint Bradford <clintbradford@xx.xxx>
Subject: [amsat-bb] Nada 0706AM PDT
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <D0F6BAF4-D2CC-4BF1-99F3-8670E455FFC0@xx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
Nothing heard 0706AM PDT pass ... Well, at least I know my Keps and
PocketSat3 are right on, since I SAW the ISS earlier this morning ... (grin)
Spoke with Sacramento and Montana a little while ago on AO-51.
No good pass of ISS here (DM13) until 9:56PM PDT. Time to get ready for our
Yuri Party tonight!
Clint, K6LCS
909-241-7666
------------------------------
Message: 4
Date: Tue, 12 Apr 2011 07:26:05 -0700
From: Clint Bradford <clintbradford@xx.xxx>
Subject: [amsat-bb] ISS Deception Reports
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <1B58D4A9-A333-4799-BA2E-4965DEEB3AD8@xx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
>> ... I am curious why we need 100 reports that a signal was not heard?
Because some of us are damned excited with this project ... It is also good
to let others know that their setups are not necessarily improper - that
those who "think" they know what they are doing are not hearing it right now.
And besides - how many "50th anniversaries of man orbiting the Earth" can
one celebrate in one's lifetime?
Clint, K6LCS
------------------------------
Message: 5
Date: Tue, 12 Apr 2011 07:30:25 -0700
From: Scott Rights <scott.rights@xxxxx.xxx>
Subject: [amsat-bb] ARISS nothing heard 14:10UTC San Diego
To: amsat-bb@xxxxx.xxx
Message-ID: <A1ACA695-EC24-4A55-B4BF-24BA68490169@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
I could hear a carrier on 145.800 so I was pointed in the right direction
;-) but nothing on 145.950
I was listening last night too (12th UTC date).
Scott N6PG
------------------------------
Message: 6
Date: Tue, 12 Apr 2011 11:00:37 -0400
From: <n4csitwo@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: arrisat1 no signals/signals
To: "Bruce" <kk5do@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <87E1786FB2974446B7356805DB094EFC@xxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I'm really not surprised at all in the redundant reporting. In fact, I
welcome it. The answer is simple. Anyone participating in an interesting
endeavor such as this, enjoy feeling "CONNECTED". The content of their input
doesn't matter as much as hearing from the others who are experiencing
something in common with you and are there with you in this effort.
To be honest, I'm so tired of deleting bb email with the word "diplexers"
and "phonetics", that this is a welcome change.
Dave, AA4KN
----- Original Message -----
From: "Bruce" <kk5do@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>'t
Sent: Tuesday, April 12, 2011 9:59 AM
Subject: [amsat-bb] arrisat1 no signals/signals
>I am curious why we need 100 reports that a signal was not heard? Would it
>not
> be more beneficial to post nothing unless a signal was actually heard
> thereby
> reducing the number of posts to the bb? also, please reply to this message
> directly so as not to clutter the bb.
>
>
> 73...bruce
> _______________________________________________
> 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: 7
Date: Tue, 12 Apr 2011 16:56:55 +0200
From: Allan Saul <allan@xxxxxxxx.xx.xx>
Subject: [amsat-bb] ArisSAT-1nothing heard 14:57 UC South Africa
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Message-ID:
<693682E7994243418EFDBB1692138DAC01ECDAD266C5@xxxxx.xxxxxxxx.xx.xx>
Content-Type: text/plain; charset="us-ascii"
zip here.
73 Allan ZS1LS
------------------------------
Message: 8
Date: Tue, 12 Apr 2011 08:18:03 -0400
From: Carl Rimmer W8KRF <w8krf@xxxxx.xxx>
Subject: [amsat-bb] ASRISSat-1
To: amsat-bb@xxxxx.xxx
Message-ID: <4DA442FB.8050603@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I pretty much made my frustration statement on the ISS Fan Club site.
Someone said this was just "part of the game." What bothers me is just
that, it has become a game. They took our football and are playing by
their rules. What a let down!!!! Let's see what happens in July.
Oh, as far as that battery goes, we need to send the Energizer Bunny up
with Endeavor. LOL.
73,
--
*Carl W8KRF *
------------------------------
Message: 9
Date: Tue, 12 Apr 2011 20:51:03 +0530
From: "Nitin Muttin" <vu3tyg@xxxxxxxxxx.xxx>
Subject: [amsat-bb] ARRISSAt-1 not heard 15.10 UTC
To: "'Amsat BB'" <amsat-bb@xxxxx.xxx>
Cc: amsatindia@xxxxxxxxxxx.xxx
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAAGrkmOZJGeFEhu2wWKtzUH/CgAAAEAAAAGsRrpPlN5xLqbt8+Q2efL
0BAAAAAA==@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Nothing heard on all frequencies from ARRISSat-1 on during the 15:10 UTC
pass over India.
73's
Nitin [VU3TYG]
_____
No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1209 / Virus Database: 1500/3567 - Release Date: 04/11/11
------------------------------
Message: 10
Date: Tue, 12 Apr 2011 11:22:30 -0400
From: "Bob Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] Re: satellite average elevation
To: <amsat-bb@xxxxx.xxx>
Message-ID: <00c901cbf925$70a37da0$51ea78e0$@xxx>
Content-Type: text/plain; charset="us-ascii"
> we used a horizontally polarized yagi fixed at 30
> degrees above the horizon. That worked very well..
Thanks for the confirmation. Yes, elevation rotation is simply not needed
at all for LEO spacecraft and modest beams. A mild, fixed tilt modest beam
is just perfect.
But, the "30 degree" angle myth is very pervasive throughout amsat, whereas,
the optimum angle is more like 15 degrees.
A 30 degree up-tilt gives up too much gain (-3 dB!) on the horizon where
signals are weakest and where satellites spend most of their time, and puts
the gain in an area of the sky where the satellite is already 6 dB stronger
and is rarely there (giving you max beam gain where you need it least).
If you look at the sketches on the web page, the optimum angle is more like
15 degrees up-tilt. It preserves max gain on the horizon within 1 dB (where
it is needed most) and focuses the breadth of its gain on the area of the
sky where the satellites spend something like 95% of their time. For the
missing 5%, the satellite is right on top of you and almost 10 dB stronger
without any beam at all. Oh, and the 15 degree up-tilt beam is also perfect
for Terrestrial operations as well.
See the sketch on: http://aprs.org/rotator1.html
In some future life, if we ever get back to HEO's and huge OSCAR arrays,
then elevation rotors have a place. These high-gain beams have such narrow
gain patterns, that higher precision tracking is a must. (Though it is
complete overkill for LEO's).
Using these OVERKILL arrays for LEO's adds significant complexity to LEO
operation requiring higher precision tracking, elevation rotors, better
timing, fresher element sets and automated operation.
Using a TV rotator and 15 degree fixed tilt beam is much more forgiving...
Bob, Wb4APR
------------------------------
Message: 11
Date: Tue, 12 Apr 2011 11:27:15 -0400
From: "Peter Portanova" <wb2oqq@xxxxxxx.xxx>
Subject: [amsat-bb] ARISSat-1 No Signal Reports
To: <AMSAT-BB@xxxxx.xxx>
Message-ID: <759A141F799040918C07FEC6A0126054@xxxx>
Content-Type: text/plain; format=flowed; charset=Windows-1252;
reply-type=original
Dave,
Well said, it's one of the reasons why we enjoy being part of the AMSAT
community, talking thru satellites never gets old, for most of us, but the
camaraderie that we enjoy, the many valuable spinoff groups that form. To
those of us who subscribe to this feeling, hearing "no contact" reports
makes perfect sense, thank you for your eloquent words.
73 Pete
WB2OQQ
------------------------------
Message: 12
Date: Tue, 12 Apr 2011 10:31:41 -0500
From: Joe <nss@xxx.xxx>
Subject: [amsat-bb] Re: ArisSAT-1nothing heard 14:57 UC South Africa
To: amsat-bb@xxxxx.xxx
Message-ID: <4DA4705D.2010007@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
How about we all wait and announce....
I HEARD IT ON......
IT'S LIKE EVERYONE TELLING US WE HAVEN'T HEAR OSCAR 6 TODAY.
GEEEZ.
Joe WB9SBD
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 4/12/2011 9:56 AM, Allan Saul wrote:
> zip here.
>
> 73 Allan ZS1LS
> _______________________________________________
> 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: 13
Date: Tue, 12 Apr 2011 17:45:53 +0200 (CEST)
From: Petr Pakr<ok1in@xxxxxx.xx>
Subject: [amsat-bb] Frustration abt Arissat-1
To: amsat-bb@xxxxx.xxx
Message-ID: <11838.217.460-10030-122426461-1302623153@xxxxxx.xx>
Content-Type: text/plain; charset="us-ascii"
Hallo NASA,
maybye is time to tell - Arissat-1 have a problem. I feel that too much
peoples loose too much time for nothing... :-(
73! Petr
------------------------------
Message: 14
Date: Tue, 12 Apr 2011 09:34:22 -0700
From: Clint Bradford <clintbradford@xx.xxx>
Subject: [amsat-bb] Reception Reports
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <B623207A-C450-430F-9CD9-A4F5B7532D85@xx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
>> ... IT'S LIKE EVERYONE TELLING US WE HAVEN'T HEAR OSCAR 6 TODAY.
No, you are wrong. Sorry you might have missed the news, but OSCAR 6 is now
non-operational. No one is trying to hear her.
But ARISSat-1, on the other hand, has many countries involved in attempting
to get it up and running today.
Clint, K6LCS
------------------------------
Message: 15
Date: Tue, 12 Apr 2011 09:40:12 -0700 (PDT)
From: Glen Zook <gzook@xxxxx.xxx>
Subject: [amsat-bb] Re: satellite average elevation
To: amsat-bb@xxxxx.xxxx Bob Bruninga <bruninga@xxxx.xxx>
Message-ID: <279568.30420.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
As I said, in the "goode olde dayes" we used 30 degree up tilt and it worked
well for all passes including overhead passes. Lessening the up tilt may
increase the gain for the lower angle passes but will also decrease the gain
on the higher angle passes. So, it is a "trade off" no matter what you do!
Of course, back in the early 1970s we did not have computer simulations of
antenna patterns, etc. readily available and experimentation showed that 30
degrees worked the best.
In terms of computers, if one had use of a computer what was generally done
was to take the "keps" of a particular satellite (then primarily OSCAR VI
and OSCAR VII) and make tables showing the azimuth and elevation for passes
at various equator crossings giving a relative time for AOS and LOS. You
just added this time to the actual "clock" time and adjusted your rotor
direction to correspond with this.
During the early 1970s, members of the Richardson Wireless Klub (K5RWK -
Richardson, Texas) had access to main frame computers at Collins Radio,
Texas Instruments, and Electrospace that were used to compute the
information. This information was compiled into a set of tables for OSCAR
VI and OSCAR VII which was applicable to a radius of around 100 miles from
the Dallas / Fort Worth area.
Using this rudimentary information I was able to acquire the 1st Satellite
1000 award issued in the 5th call area and the 3rd award issued anywhere.
Also was able to acquire the achievement recognition number 32. Many of
today's operators are not aware of the efforts that it took "back then" to
work the satellites. Computer control of antennas, doppler, etc., make
things much easier these days.
Glen, K9STH
AMSAT 239/LM 463
Website: http://k9sth.com
--- On Tue, 4/12/11, Bob Bruninga <bruninga@xxxx.xxx> wrote:
Thanks for the confirmation.? Yes, elevation rotation is simply not needed
at all for LEO spacecraft and modest beams.? A mild, fixed tilt modest beam
is just perfect.
But, the "30 degree" angle myth is very pervasive throughout amsat, whereas,
the optimum angle is more like 15 degrees.?
A 30 degree up-tilt gives up too much gain (-3 dB!) on the horizon where
signals are weakest and where satellites spend most of their time, and puts
the gain in an area of the sky where the satellite is already 6 dB stronger
and is rarely there (giving you max beam gain where you need it least).
------------------------------
Message: 16
Date: Tue, 12 Apr 2011 09:46:40 -0700
From: Clint Bradford <clintbradford@xx.xxx>
Subject: [amsat-bb] Dead Battery>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <8FF742AC-EAE5-43B9-921D-0AB772396292@xx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
Stefan VE4NSA is reporting, "Dead battery. If they have time today/tomorow
they might try to charge it. Otherwise nothing will happen."
Can anyone confirm or refute this?
Clint, K6LCS
------------------------------
Message: 17
Date: Tue, 12 Apr 2011 11:49:47 -0500
From: Joe <nss@xxx.xxx>
Subject: [amsat-bb] Re: Reception Reports
To: amsat-bb@xxxxx.xxx
Message-ID: <4DA482AB.4000207@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Correct,
But the difference is, we know that O6 is dead, but we also do not know
if this new thing is alive. And until someone posts that it was heard,
what actual good does 1000 posts saying I diddn't hear it help>
Help is saying I heard it just now at 17:38 UTC, strong signal bla bla
bla. does knowing that it wasn't heard make it be heard?
Joe
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 4/12/2011 11:34 AM, Clint Bradford wrote:
>>> ... IT'S LIKE EVERYONE TELLING US WE HAVEN'T HEAR OSCAR 6 TODAY.
> No, you are wrong. Sorry you might have missed the news, but OSCAR 6 is
now non-operational. No one is trying to hear her.
>
> But ARISSat-1, on the other hand, has many countries involved in
attempting to get it up and running today.
>
> Clint, K6LCS
> _______________________________________________
> 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: 18
Date: Tue, 12 Apr 2011 09:54:07 -0700 (PDT)
From: Nader Omer <st2nh@xxxxx.xxx>
Subject: [amsat-bb] -VE copy is a +VE evaluation .
To: amsat bb bb <amsat-bb@xxxxx.xxx>
Message-ID: <835006.29383.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
For sure a? -VE is a +VE evaluation for a new Bird.
?
Not heard a bird is a way of ventilate the frustration.
A friend in need is a friend (list) indeed. J
?
73 , Nader.
------------------------------
Message: 19
Date: Tue, 12 Apr 2011 10:10:15 -0700 (PDT)
From: B J <top_gun_canada@xxxxx.xxx>
Subject: [amsat-bb] Remembering Another Spaceflight Anniversary
To: amsat-bb@xxxxx.xxx
Message-ID: <781729.81719.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
http://www.universetoday.com/84774/video-re-live-the-first-shuttle-flight-30-y
ears-ago/
I remember getting up early to watch the launch on TV and, two days later,
the landing. It was, after all, an historic event as a new era in
spaceflight began that day, 20 years, as someone noted, after Gagarin's
mission.
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
Message: 20
Date: Tue, 12 Apr 2011 10:58:16 -0700
From: KF1BUZ <kf1buz@xxxxx.xxx>
Subject: [amsat-bb] Lve issc overage
To: <AMSAT-BB@xxxxx.xxx>
Message-ID: <012401cbf93b$33bc0d60$9b342820$@xxx>
Content-Type: text/plain; charset="us-ascii"
I have been watching since I got up around 7 am pst,
There has been no mention of battires only the IP phones are not working as
they should, I am not hearing the Russians talking about anything on space
to ground, which is odd, normaly they are chatty on a day off.
Have a great day
KF1BUZ
http://www.nasa.gov/mission_pages/station/main/index.html
------------------------------
_______________________________________________
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 6, Issue 210
****************************************
Read previous mail | Read next mail
| |
