Date: Tue, 15 Mar 94 04:30:36 PST From: Ham-Space Mailing List and Newsgroup Errors-To: Ham-Space-Errors@UCSD.Edu Reply-To: Ham-Space@UCSD.Edu Precedence: Bulk 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 Send Replies or notes for publication to: Send subscription requests to: Problems you can't solve otherwise to brian@ucsd.edu. Archives of past issues of the Ham-Space Digest are available (by FTP only) from UCSD.Edu in directory "mailarchives/ham-space". We trust that readers are intelligent enough to realize that all text herein consists of personal comments and does not represent the official policies or positions of any party. Your mileage may vary. So there. ---------------------------------------------------------------------- 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 ------------------------------ 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@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. ------------------------------ 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 ------------------------------ End of Ham-Space Digest V94 #58 ******************************