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- Date: Tue, 18 Oct 94 04:30:46 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: List
- Subject: Ham-Space Digest V94 #294
- To: Ham-Space
-
-
- Ham-Space Digest Tue, 18 Oct 94 Volume 94 : Issue 294
-
- Today's Topics:
- MIR activity ?
- More Static Satellite Tracking Device (2 msgs)
- Phase III, Modes B&J Equipment
- Upload and display problems with WISP
-
- 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: Mon, 17 Oct 1994 10:07:58 GMT
- From: icesb@iroe.fi.cnr.it (Lapo Pieri)
- Subject: MIR activity ?
-
- Some question on the MIR:
- 1) What about ham activity on MIR station ?
- 2) Is there a store and forward access,and when is active ?
- 3) Where is R2MIR-1 ?
- 4) I've heard that RV3DR is the QSL manager for MIR hamradio, is there an
- internet address for RV3DR?
- Thanks a lot in advance
- Lapo Pieri IK5NAX
-
- --------------------------------------------------------------------------------
- Lapo Pieri IK5NAX | Internet:
- | lpieri@nyx.cs.du.edu
- Istituto per la Ricerca sulle Onde Elettromagnetiche | icesb@iroe.fi.cnr.it
- del Consiglio nazionale delle Ricerche (IROE-CNR) |
- | phone: +39 55 4235 276
- [Istitute for the Research on Electromagnetic Waves | home: +39 55 410209
- of the National Council of Research] |
- --------------------------------------------------------------------------------
-
- ------------------------------
-
- Date: Mon, 17 Oct 1994 18:09:42 GMT
- From: charlier@lsid.hp.com (Charlie Panek)
- Subject: More Static Satellite Tracking Device
-
- Jordi Caralt Barba (caralt@gaig.upc.es) wrote:
-
- (about planar phased electrically steerable antenna arrays)
-
- : 5. Is there anybody who knows something about high directivity planar arrays?
- : Am I the first to attempt doing such a device?
-
- Back when I was fresh out of engineering school in 1978, I interviewed
- with Raytheon in Massachusetts. One of the things they showed me that
- they were working on was a UHF radar system for the military. I believe
- it was called PAVE-PAWS or something like that. It used large arrays
- of phased antennas (actually individual receiver/transmitters I think),
- and the beam was steered by controlling the phase at each antenna. I
- believe their system consisted of dozens or maybe even hundreds of antennas.
-
- The one thing that really stuck out in my mind at the time was seeing
- the test equipment indicating frequencies right in the amateur 450 MHz band!
-
- Perhaps there's someone around who worked on that thing that can supply
- more information.
-
- The tricky thing, I would think, would be controlling the phase accurately
- enough; keeping it stable with temperature, and keeping the phase delays
- through any active elements consistent from antenna to antenna. I know
- from cutting 1/4 wave transmission lines on 450 MHz, that just a few
- millimeters of error can move you many MHz in frequency.
-
- Lots of luck!
-
- --
- Charlie Panek KX7L Hewlett Packard Company
- charlier@lsid.hp.com Lake Stevens Instrument Division
- Everett, Washington
-
- ------------------------------
-
- Date: 17 Oct 1994 23:31:42 GMT
- From: tls@gate.net (Terry Steinford)
- Subject: More Static Satellite Tracking Device
-
- Charlie Panek (charlier@lsid.hp.com) wrote:
-
- : The one thing that really stuck out in my mind at the time was seeing
- : the test equipment indicating frequencies right in the amateur 450 MHz band!
-
-
- I believe that in most of the 450 MHz band government radiolocation is the
- primary use, amateur is secondary.
-
- ------------------------------
-
- Date: Mon, 17 Oct 1994 17:14:51 GMT
- From: sem2r@galen.med.Virginia.EDU (Stacey E. Mills)
- Subject: Phase III, Modes B&J Equipment
-
- I'm newly returned to hamming after 20 years off and want to
- get onto the Phase III satellites, Modes B & J. I have a
- Kenwood TS790, but I need recommendations regarding high-gain
- circularly polarized antennas for 2 mtrs and 70 cm,
- alt-azi rotators, preamplifers, and rotor tracking software and
- hardware interfaces. Any and all advice would be welcomed!!!
-
- Please respond directly to:
-
- Stacey E. Mills / WB4QKT
-
- E-Mail: SEM2R@galen.med.virginia.edu
-
- Thanks for your help!! Stacey / WB4QKT
-
- ------------------------------
-
- Date: Mon, 17 Oct 1994 16:18:04 GMT
- From: marcoh@world.std.com (Mark A Heroux)
- Subject: Upload and display problems with WISP
-
- I am relatively new to digital satellites, but have successfully
- downloaded files from AO-16 and LO-19. I'm using the 2207 version
- WISP, and when I attempt to upload, after apparently transmitting
- the whole file (~800 bytes), WISP tells me "file not accepted by
- server".
-
- Also, if you use WISP, do you find that the AOS/LOS display in the
- upper left corner of GSC overwrites part of the pass prediction and
- radio button displays?
-
- If you know the cause or possible causes of these errors, would you
- please email me and I will summarize to the net.
-
- Many thanks,
-
- Marco
-
- marcoh@world.std.com, n1mae@amsat.org
-
- ------------------------------
-
- End of Ham-Space Digest V94 #294
- ******************************
-