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- Date: Sat, 4 Jun 94 04:30:31 PDT
- From: Ham-Space Mailing List and Newsgroup <ham-space@ucsd.edu>
- Errors-To: Ham-Space-Errors@UCSD.Edu
- Reply-To: Ham-Space@UCSD.Edu
- Precedence: Bulk
- Subject: Ham-Space Digest V94 #145
- To: Ham-Space
-
-
- Ham-Space Digest Sat, 4 Jun 94 Volume 94 : Issue 145
-
- Today's Topics:
- NAVSPASUR listeners?
- Orbital Elements for the Moon?
- Oscar antennas?
- What SAT's can I hear on a Scanner ? (2 msgs)
-
- Send Replies or notes for publication to: <Ham-Space@UCSD.Edu>
- Send subscription requests to: <Ham-Space-REQUEST@UCSD.Edu>
- 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: Fri, 3 Jun 1994 19:13:41 GMT
- From: swrinde!gatech!howland.reston.ans.net!math.ohio-state.edu!cyber2.cyberstore.ca!nntp.cs.ubc.ca!unixg.ubc.ca!news.mic.ucla.edu!library.ucla.edu!csulb.edu!csus.edu!netcom.@@ihnp4.ucsd.edu
- Subject: NAVSPASUR listeners?
- To: ham-space@ucsd.edu
-
- Over the past three or four years there has been occasional
- discussion in the Compuserve satellite watchers' group concerning
- reception of U.S. Navy space surveillance system (NAVSPASUR) VHF (ca.
- 219 MHZ) signals as they are reflected by satellites passing through the
- system's fan beams. The CW beams, radiated from the primary transmitter
- at Lake Kickapoo TX and two secondary sites in Arizona and Alabama, are
- narrow in the north-south direction and wide east-west. Satellites
- crossing a beam cause a "ping" which can be analyzed for angle-of-
- arrival and doppler to gain information about the satellite's orbital
- parameters. As the system is used by the Navy, several receiver sites
- are involved and the total amount of angle-of-arrival data (I don't
- think they use the doppler) is sufficient to determine the orbit
- completely. The most advanced of the Compuserve observers uses time-of-
- crossing, doppler, and coarse angle-of-arrival at a single site to
- partially determine the orbit, or to generate differential corrections
- to orbital elements previously determined.
-
- The discussion on CIS has been useful to me since I'm doing a
- study of relatively cheap ways to do space surveillance, and I'd like to
- ask the wider world of the Net if anyone else is doing "unofficial"
- NAVSPASUR listening. If so, what kind of equipment and orbit
- determination algorithms are being used? Related techniques, such as
- use of the signals from powerful TV and FM radio stations, ATC radars,
- etc. would also be of interest.
-
- ------------------------------
-
- Date: Fri, 3 Jun 1994 18:50:48 GMT
- From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!europa.eng.gtefsd.com!news.umbc.edu!eff!news.duke.edu!zombie.ncsc.mil!blackbird.afit.af.mil!sd2!johnsotc@network.ucsd.edu
- Subject: Orbital Elements for the Moon?
- To: ham-space@ucsd.edu
-
- In article <2sik3c$6ko@crchh7b0.bnr.ca>, debaker@bnr.ca (David Baker) writes:
- |>
- |> Greetings,
- |>
- |> I was just wondering if there are orbital elements for the moon
- |> that could be entered into a satellite tracking program. Two line
- |> NASA format would be best. While we're at it, how about elements
- |> for the sun?
- |>
- |> Thanks,
- |> +--------------------------------------------------------------------+
- |> | David E. Baker Internet: debaker@bnr.ca (Richardson, TX, USA) |
- |> | Callsign: AB5PI Amateur Packet: AB5PI@N5AUX.#DFW.TX.USA.NA |
- |> | My opinions do not necessarily reflect the opinions of my employer |
- |> +--------------------------------------------------------------------+
-
-
- The following is from a previous article written on the subject:
-
- Sender: news@freenet.carleton.ca
- Reply-To: ae517@FreeNet.Carleton.CA (Russ Renaud)
- Organization: The National Capital FreeNet, Ottawa, Ontario, Canada
- References: <2d2e8a6b@sm0nbj.ct.se>
- Date: Tue, 11 Jan 1994 13:56:37 GMT
- Lines: 29
-
- MOON
- 1 0002 93360.0000000 0.0000000 00000-0 00011
- 2 0002 22.4297 346.9573 .040813 180.3337 265.5319 0.035749304251
-
-
- I can not vouch for the long-term accuracy of these keps, as I merely
- pulled them off the local packet bbs. The two times I have plugged them
- into to mactrak, it seem to work, ie the software predicted that the moon was
- visible, and lo and behold, that great orb in the sky was actually there!
-
-
- de Russ
- VA3RR/AA8LU
- in beautiful downtown Ottawa
-
- *** I survived the Beijing flu!! ***
-
- --
-
- ------------------------------
-
- Date: Fri, 3 Jun 1994 12:24:24 GMT
- From: news.crd.ge.com!crd.ge.com!mallick@uunet.uu.net
- Subject: Oscar antennas?
- To: ham-space@ucsd.edu
-
- I used the HyGain Oscar-Link antennas. They seem pretty well constructed
- and I made a bunch of contacts through AO-13 running my TenTec 2510 barefoot
- (10 watts out).
- --
- .... .. .... .. .... .. .... .. .... .. .... ..
- John A. Mallick WA1HNL E-mail: mallick@crd.ge.com
- GE Corporate Research and Development Phone: (518)-387-7667 (W)
- Schenectady, NY 12301 FAX: (518)-387-6560 (W)
- .... .. .... .. .... .. .... .. .... .. .... ..
-
- "Work like hell. Tell everyone everything you know. Close a deal
- with a handshake. And have fun." --- "Doc" Edgerton
-
- ------------------------------
-
- Date: 3 Jun 1994 11:35:02 -0400
- From: newstf01.cr1.aol.com!search01.news.aol.com!not-for-mail@uunet.uu.net
- Subject: What SAT's can I hear on a Scanner ?
- To: ham-space@ucsd.edu
-
- I just rec'd my no-code Tech license and am very interested in the
- AMSAT's.
- I use STS Plus tracking software and have been tracking the AO-21
- bird and can hear it fairly well with a PRO 2006 and a RS Discone. I
- am becoming familiar with the procedures to operate with and am blown
- away by all this cool stuff.
-
- I also have a shortwave with usb/lsb.
-
- My main question is what other SAT's can i hear with my equipment
- now? I really would like to know what is out there before I choose
- my equipment
-
- Thanks in Advance. Brad
-
- ------------------------------
-
- Date: 3 Jun 94 21:54:27 GMT
- From: sdd.hp.com!hpscit.sc.hp.com!icon!greg@hplabs.hpl.hp.com
- Subject: What SAT's can I hear on a Scanner ?
- To: ham-space@ucsd.edu
-
- Well, let's see...
-
- AO-27 downlink is on 436.800, FM
- RS-10 is on 29.360-400 USB
- RS-12 is on 29.410-450 USB
-
- The RS-10 & 12 beacons are 3khz down from the lower edge.
-
-
- I doubt you'd be able to hear AO-13 or FO-20 (VHF/UHF + SSB + they're weak)
-
- Enjoy!
-
- Greg KD6KGW
-
- ------------------------------
-
- End of Ham-Space Digest V94 #145
- ******************************
-