Date: Tue, 15 Mar 94 04:30:36 PST
From: Ham-Space Mailing List and Newsgroup <ham-space@ucsd.edu>
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Subject: Ham-Space Digest V94 #58
To: Ham-Space
Ham-Space Digest Tue, 15 Mar 94 Volume 94 : Issue 58
Today's Topics:
Antennas
Frustration over sat tracking prgs...
new stsplus??
Portable AO-13 operation
STS-62 Orbital State Vector Rev #163 (Post OMS-4)
Two-Line Orbital Element Set: Space Shuttle
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Date: 15 Mar 94 23:21:00 GMT
From: news-mail-gateway@ucsd.edu
Subject: Antennas
To: ham-space@ucsd.edu
Ref AO-13:
I found out today that "nobody likes the Cushcraft satellite antennas".
Is this a fact or just an opinion?
I wonder what is the "better" antenna combination for 144/430? Is the KLM
that great?
I have an Cushcraft R7 and a Mosley CL 33 that I use for
HF right now. I have used Cushcraft antennas for six and VHF before with
no particular problems. Is there a problem with the AOP-1 or what?
Roland WF4P/7J1AKI
cowanr@zama-emh2.army.mil
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Date: 10 Mar 94 18:47:08 GMT
From: agate!howland.reston.ans.net!paladin.american.edu!zombie.ncsc.mil!blackbird.afit.af.mil!sd2!johnsotc@ucbvax.berkeley.edu
Subject: Frustration over sat tracking prgs...
To: ham-space@ucsd.edu
In article <jkondis.763231047@orion.oac.uci.edu>, jkondis@orion.oac.uci.edu (John Kondis) writes:
|>
|> Has anyone had similar problems? Or do any of you PC wizards have any
|> suggestions? Are there any 'reliable' progs out there that are easy to
|> please???
|>
|> Thanks in advance for any replies...
|> ...John
|> jkondis@orion.oac.uci.edu
|>
|>
|>
Have you tried PC-Track 3.0 on SimTel or garbo?
oak.oakland.edu pub/msdos/satelites pctrk30a.zip pctrk30b.zip
garbo.uwasa.fi pc/ham pctk301a.zip pctk301b.zip
------------------------------
Date: Mon, 14 Mar 1994 21:10:18 GMT
From: ihnp4.ucsd.edu!galaxy.ucr.edu!library.ucla.edu!csulb.edu!csus.edu!netcom.com!dsharp@network.ucsd.edu
Subject: new stsplus??
To: ham-space@ucsd.edu
brunelli_pc@delphi.com wrote:
> I have heard a few rumors about SOP94???, and that it tracks
> multiple sats. Any info on validity, ftp availability,
> or otherwise would be grealyly appreciated
I found SOP9405 at grivel.une.edu.au in directory
/pub/ham-radio/funet/ham/satellite/tracking.
73, Dave
--
Dave Sharp - NU8H Dayton, Ohio dsharp@netcom.com
------------------------------------------------------------
Made from only the freshest electrons and 100% pure ASCII to
insure that you have the best possible newsreading experience.
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Date: Mon, 14 Mar 1994 18:26:44 GMT
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!pipex!sunic!psinntp!psinntp!arrl.org!zlau@network.ucsd.edu
Subject: Portable AO-13 operation
To: ham-space@ucsd.edu
Looks like Mode S is the way to go for most
portable station that can work well through
AO-13. Maybe that is why they have Mode B
receiving contests--takes a lot more work to
hear the transponder noise floor....
As I thought, as confirmed by G3RUH in a
recent published letter, the beacon uses
*all* the transponder power, thus you
want to be *weaker* than the beacon.
During a busy pass, I guess this means you
want your signal to be at least 6 dB
weaker, to accomodate at least 4 users.
My 2 foot dish for for 2.4 GHz receive
is probably too big, I'll be trying a
small helix with a 0.4 dB system NF converter
when (if?) the weather gets nice outside.
Wonder if anyone has gotten the HP PHEMT
to work well on this band? The data sheet
says a device NF of 0.13, but given the
error inherant in such a measurement, it
might be no better than other PHEMTs. I'll
be bringing something to the West Coast
VHF conference for comparison.
--
Zack Lau KH6CP/1 2 way QRP WAS
8 States on 10 GHz
Internet: zlau@arrl.org 10 grids on 2304 MHz
------------------------------
Date: Tue, 15 Mar 1994 01:05:04 GMT
From: ihnp4.ucsd.edu!library.ucla.edu!csulb.edu!csus.edu!netcom.com!astroman@network.ucsd.edu
Subject: STS-62 Orbital State Vector Rev #163 (Post OMS-4)
To: ham-space@ucsd.edu
Vector format = 7
Satellite Name: STS-62
Catalog Number: 23025 94015A
Epoch Date/Time: 94073.79437932870
03/14/1994 19:03:54.374 UTC
ECI X: -5076.328225 km
Y: 3270.819647 km
Z: -2756.382000 km
Xdot: -4.994451884 km/s
Ydot: -4.657109101 km/s
Zdot: 3.667411000 km/s
ndot/2 (drag): 0.00069430000 rev/day^2
nddt/6: 7.54270E-06 rev/day^3
Bstar: 9.89890E-05 1/Earth Radii
Elset #: 23
Rev @ Epoch: 163.88529960431
MSDOS/PC software is available for conversion of
OSV to 2 Line Keplerian Elements via ftp to:
oak.oakland.edu:/pub/msdos/hamradio/v2l9331.zip
and the SIMTEL archives.
State Vectors courtesy Ken Ernandes N2WWD
SM
------------------------------
Date: Tue, 15 Mar 1994 00:44:30 GMT
From: ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!paladin.american.edu!zombie.ncsc.mil!blackbird.afit.af.mil!tkelso@network.ucsd.edu
Subject: Two-Line Orbital Element Set: Space Shuttle
To: ham-space@ucsd.edu
The most current orbital elements from the NORAD two-line element sets are
carried on the Celestial BBS, (513) *253-9767*, and are updated daily (when
possible). Documentation and tracking software are also available on this
system. As a service to the satellite user community, the most current
elements for the current shuttle mission are provided below. The Celestial
BBS may be accessed 24 hours/day at 300, 1200, 2400, 4800, or 9600 bps using
8 data bits, 1 stop bit, no parity.
Element sets (also updated daily), shuttle elements, and some documentation
and software are also available via anonymous ftp from archive.afit.af.mil
(129.92.1.66) in the directory pub/space.
STS 62
1 23025U 94015A 94073.32846065 .00069430 75427-5 98989-4 0 257
2 23025 39.0144 184.6491 0007547 262.5411 240.1813 16.04851851 1551
--
Dr TS Kelso Assistant Professor of Space Operations
tkelso@afit.af.mil Air Force Institute of Technology
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End of Ham-Space Digest V94 #58
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