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1994-11-13
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Date: Wed, 25 May 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: Bulk
Subject: Ham-Space Digest V94 #134
To: Ham-Space
Ham-Space Digest Wed, 25 May 94 Volume 94 : Issue 134
Today's Topics:
* SpaceNews 23-May-94 *
Gear for starting satellite station
Interested in starting w/ Sat
International Space Development Conference
LUSAT-1 (LO-19): Actual status
Skinny Dip
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: Tue, 24 May 1994 07:55:09 MDT
From: ihnp4.ucsd.edu!usc!math.ohio-state.edu!cyber2.cyberstore.ca!nntp.cs.ubc.ca!alberta!ve6mgs!usenet@network.ucsd.edu
Subject: * SpaceNews 23-May-94 *
To: ham-space@ucsd.edu
Hi folks.
Sorry if this is a dupe, but I've been having a lot of trouble with mail
lately.
73, de John, KD2BD
-----------------------------------------------------------------------------
SB NEWS @ AMSAT $SPC0523
* SpaceNews 23-May-94 *
BID: $SPC0523
=========
SpaceNews
=========
MONDAY MAY 23, 1994
SpaceNews originates at KD2BD in Wall Township, New Jersey, USA. It is
published every week and is made available for unlimited distribution.
* LUSAT-1 CRASH RECOVERY UNDERWAY *
===================================
On 16-May-94 while LU1JBR and other stations were operating LUSAT-1
(LO-19), the satellite's downlink vanished, a result of an on-board
computer crash. By 17-May-94, LUSAT-1 command station (operated by
Norberto Pennini, LU8DYF), successfully reset the satellite.
Norberto will start a series of deep tests and studies in order to find
the origin of the crash. Reloading of operating software will follow the
study. Please note that the satellite will not be operational for regular
users for the next 7 to 30 day period.
LUSAT-OSCAR-19 controllers would like to thank LU8DYF and other stations
who, in a way or another, collaborated and made this operation a success,
including: LU6DYD, LU7AKC, LU7DSU, LU8ENU, LU4AGC, LU1EXC, LU2BDT, LW1EEO
and LU3AGY.
[Info via Eduardo Sweet, LU7AKC]
* AMSAT CALL FOR PAPERS *
=========================
Share your experience with the amaeur satellite community at the 1994
AMSAT-NA Annual Meeting and Space Symposium scheduled for 07-Oct-94
through 09-Oct-94 in Orlando, Florida. Come help celebrate AMSAT's 25 year
presence in Space. Your help is needed to make this meeting a success.
Papers for this meeting are sought. Editing, formatting, graphics and even
typing can be provided if required. Prepare a paper and advance your
reputation among others involved in the Amateur Satellite program! Even if
you cannot attend the meeting, consider a paper for publication.
Topics for all amateur satellite disciplines are sought. Author and Title
requested ASAP. Compose a short abstract by July 1. Final drafts are
requested on or about August 26.
Direct inputs and inquiries to:
Steve Park - WB9OEP
12122 99th Ave. N.
Seminole, FL 34642
Phone: (813) 391-7515
Internet: SKPA@QMGATE.ECI-ESYST.COM
Amateur Packet Radio: WB9OEP @ W4DPH#TPA.FL.EL87OW
Join us in Orlando, Florida for the fun and festivities!
[Info via Steve Park, WB9OEP]
* CLEMENTINE FAILURE *
======================
After successfully completing a mission using advanced ballistic missile
defense technologies to map the entire surface of the moon, the Ballistic
Missile Defense Organization's Clementine satellite suffered an on-board
malfunction at 9:39 AM EST on 07-May-94. The likely result of this
malfunction will be to prevent Clementine from performing the planned close
fly by of the near-Earth asteroid Geographos in August 1994, and for the
satellite to point its cameras and sensors.
Preliminary analysis has traced the cause of the malfunction to the
on-board computer which controls most of the satellite's systems including
the attitude control thrusters. The computer activated several thrusters
during a 20 minute telemetry interrupt with the ground station, thus
depleting all the fuel in the Attitude Control System (ACS) tanks. It has
not been determined as yet whether the fault was in the computer software
or in the computer's electronic chips. The primary processor on the
computer is a radiation hardened Military Standard 1750A computer, which is
not experimental technology.
Clementine's mission control center in Alexandria, VA. is continuously
monitoring the satellite. It has been determined that all instruments and
systems are continuing to function well with the exception of the ACS.
Although it may be difficult to Clementine to make the close fly by of the
asteroid, the satellite will continue to perform its intended military
mission to test 23 advanced technologies. The Clementine engineering team
is examining several mission options which would continue to yield useful
data. Since January 25, 1994, Clementine's cameras have recorded over 1.5
million images including the topographical surface of the moon. Analyzing
this data, including results of the search for the existence of ice on the
lunar surface, will continue to occupy scientists for many years.
The Clementine project is managed by BMDO, built by the Naval Research
Laboratory, and its instruments constructed by industry and the Lawrence
Livermore Laboratory. It has been a landmark project since it demonstrates
that small, highly capable satellites can be built and launched for under
$100 million and in less than two years, using advanced miniaturized
technology and a streamlined management approach.
[Info via Richard H. Buenneke Jr.]
* DISCOVERY OF ASTEROID MOON *
==============================
NASA's space probe Galileo has discovered what is probably the first
known moon of an asteroid. Since Galileo passed the asteroid, Ida, on
August 28, 1993, the probe has continued to send back images and data from
the near infrared mapping spectrometer. Because of the great distance at
which the probe is from Earth, downloading this data will continue for
months to come.
The Galileo Porject Scientist, announced on March 3, 1994, the discovery
of a "blip" consisiting of more than a few pixels visible in data from both
the solid-state imaging system and the spectrometer.
Based on simultaneous observation, a natural moon may be in orbit around
Ida. If so, this would be the first satellite of an asteroid to be
discovered.
More information will be forth coming soon from NASA, along with the first
images of this possibly new moon orbiting Ida.
[Info via Dave, N9JUW]
* ECLIPSE IMAGE AVAILABLE VIA FTP *
===================================
A collection of images taken of the 10-May-94 annular solar eclipse have
been assembled into a single file and is available via anonymous FTP at:
ftp.uleth.ca (IP # 142.66.3.29). The image is called "eclipse.gif"
and is located in the "pub/solar/Images" directory at this site. The
frame contains 24 high-quality images taken by the Big Bear Solar
Observatory. All but three are full-disk hydrogen-alpha and Ca II K
images, giving excellent views of existing features visible on the Sun
(regions of enhanced plage, filaments, etc). The other three images are
high-resolution close-up images of the Sun showing craters and mountain
ranges against the background of the solar surface. "eclipse.gif" is a
large 1500 x 1297 x 256 image that will make good use of large
high-resolution monitors.
The folks at the BBSO did a great job capturing these images, and deserve a
nice pat on the back for covering the event so well.
"eclipse.gif" is in a semi-permanent state. That is, it will not be removed
from the FTP disk for a few months.
[Info via Cary Oler]
* RS-10 NEWS *
==============
VE3CIQ in Canada reports that RS-10 is working quite well in Mode A. In
one Atlantic pass, he made contact with FG5GI from Guateloupe Island,
ON2ATB from Belgium, and N1MCT from Maine, USA using 25 watts of transmitter
power. VE3CIQ reports he can hear himself with only 5 watts.
[Info via VE3CIQ]
* SpaceNews IN SPANISH *
========================
Pedro Jose, EA4ADD in Spain is translating SpaceNews issues into the
Spanish language and circulating the translated issues throughout the
LATNET (Latin America) and the EA (Spanish) packet radio networks.
My thanks to EA4ADD for taking the time to translate SpaceNews into Spanish.
* THANKS! *
===========
Thanks to all those who sent messages of appreciation to SpaceNews,
especially:
ON1AOT VK2XCI VE3CIQ EA4ADD N6UVY WB9OEP W0XK
* FEEDBACK/INPUT WELCOMED *
===========================
Mail to SpaceNews should be directed to the editor (John, KD2BD) via any
of the following paths:
FAX : 1-908-747-7107
PACKET : KD2BD @ N2KZH.NJ.USA.NA
INTERNET : kd2bd@ka2qhd.de.com -or- kd2bd@amsat.org
MAIL : John A. Magliacane, KD2BD
Department of Engineering and Technology
Advanced Technology Center
Brookdale Community College
Lincroft, New Jersey 07738
U.S.A.
<<=- SpaceNews: The first amateur newsletter read in space! -=>>
/EX
--
John A. Magliacane, KD2BD * /\/\ * Voice : 1-908-224-2948
Advanced Technology Center |/\/\/\| Packet : KD2BD @ N2KZH.NJ.USA.NA
Brookdale Community College |\/\/\/| Internet: kd2bd@ka2qhd.de.com
Lincroft, NJ 07738 * \/\/ * Morse : -.- -.. ..--- -... -..
------------------------------
Date: Tue, 24 May 94 09:00:18 -0400
From: psinntp!wlnntp.psi.com!usenet@uunet.uu.net
Subject: Gear for starting satellite station
To: ham-space@ucsd.edu
Here are two approaches for starting a satellite station based on my
experience of the past few years. Perhaps the most important beginning point
is reading The Satellite Experimenter's Handbook (TSEH) from the ARRL.
1. Digital satellite reception, spacecraft telemetry
If you are mostly interested in receiving information from digital
satellites, you can easily begin with DOVE (DO-17). The gear needed for DOVE
will also allow you to receive SAREX, Mir, and AO-21 transmissions.
Transmitting to the Shuttle or Mir is possible if you don't mind odd hours or
if you invest in a beam antenna (see "You, too, can contact space!" by
Michael Bass N7WLC/5 in the May/June 1993 issue of The AMSAT Journal).
The three components you need are a 2m FM transceiver, a 2m antenna, and a
packet terminal node controller or TNC. I started off with an HT (Kenwood TH-
27A, about $300 new), but any decent 2m FM rig will work. Start with an
omnidirectional antenna such as a quarter-wave ground plane. You can build
one (see TSEH for details) or buy one such as the MFJ-1740 for about $13. My
first TNC was a PacComm HandiPacket portable, but any VHF TNC such as the MFJ-
1270 (about $120) is fine. Of course, you need a computer to use with the
TNC.
DOVE transmits packet telemetry and messages on 145.825 MHz. You can also
receive traffic from the Mir packet mailbox on 145.55 MHz. In recent years,
the cosmonauts haven't been using voice much, but you're suitably equipped if
they do. The Shuttle sometimes carries SAREX (Shuttle Amateur Radio
Experiment) and can transmit packet or voice on 145.55 MHz. In addition to
its FM repeater and digital voice downlinks, AO-21 has been transmitting some
packet telemetry on 145.987 MHz recently. Finally, you can also work
terrestrial packet and 2m voice for repeaters and nets.
If your long-term goal is to work the Pacsats, you can plan ahead for 9600
bps FSK operations. Some of the new FM rigs have 9600 bps modem connectors
so you don't have to perform surgery on the radio. You can buy a PacComm TNC
with the 9600 bps modem installed for a bit over $200, not too much more than
the cost of a TNC. The versatile DSP boxes cost much more (over $500), but
offer capabilites to work many digital modes including 9600 bps FSK.
2. Analog (voice and CW) operation
If you are mostly interested in speaking to or exchanging CW with other hams,
try RS-10 Mode A and/or RS-12 Mode K. For more details, see my article
"Getting Started with RS-10" in the August 1993 QST or the article by Robert
Capon WA3ULH "Working Satellite RS-12..." in the February 1994 QST.
For reception of either satellite, any HF or 10m rig will work. I have a
used Uniden HR-2600, but you can still buy them new for $200. A 10m dipole
antenna works well--build your own or buy one (about $20). To transmit to RS-
10, you need a 2m rig with CW and USB modes. These rigs are not as common as
FM rigs and cost a bit more. My Kenwood TR-751A cost about $600 new. To
transmit to RS-12, you need to use the 15m band. The RS-12 transponder input
lies in the Advanced/Extra class subbands, so make sure you have the
privileges before you transmit.
The RS-10 CW beacon at 29.357 MHz is strong. The RS-12 CW beacon is also
strong at 29.408 MHz. Operation on these satellites is full duplex (you hear
yourself from the satellite), so headphones are necessary. If you have a 2m
multimode rig like I do, you can work other non-satellite modes: 10m voice
or CW, 2m FM voice for nets and repeaters, 2m terrestrial packet with a TNC,
and terrestrial 2m SSB or CW weak-signal operation.
The addition of a 70cm antenna ($60 for a small yagi) and a 70cm-to-10m
downconverter (about $100) will turn a Mode A station into a Mode JA station.
The only satellite currently operating JA is FO-20, but Phase 3D will likely
spend some time in this mode. The addition of a PSK modem (about $200) and
TNC ($120) brings Mode JD capability for the 1200 bps Pacsats. Alternatives
include the combined PacComm TNC/PSK modem (about $270) or a DSP box.
73, Walt KE3HP
------------------------------
Date: 24 May 1994 17:05:06 -0400
From: ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!usenet.ins.cwru.edu!ns.mcs.kent.edu!kira.cc.uakron.edu!malgudi.oar.net!news.pipeline.com!not-for-mail@network
Subject: Interested in starting w/ Sat
To: ham-space@ucsd.edu
Hey everyone. Since HF is in the pits now, I'm thinking about
getting into satelites, since the VHF in my area (New York
City) stinks, and my all band dipole is on the ground (no 40 or
80 meters) which leaves me with my 3 element tri-bander. I've
been playing with RS-12, since it's the only one I know of
right now that is an all-HF bird. The only problem is that
even on a direct pass, the most I can get is 17 or so minutes,
and only 13 or so are decent. I would like to start with the
SSB and CW VHF/UHF birds. I have the following questions:
1. What rig should I look into getting? I'm thinking about
the new Icom all-mode 2m/440 (Can't remember model #...it was
in the latest QST) Any hints?
2. Antenna wise, any ideas? I have a tri-band Yagi on the
roof now on a regular mid-sized rotor. I was thinking about
getting so moderate sized 2m/440 yagis, but what kind? Should
I invest in an alt/az rotor...that is a big investment in both
time and money, since I'd have to put another tower up on the
roof...What kind of antennas should I look for?
Anyway, that's just the beginning. Any helpful information
would be greatly appreciated! Thanks...
Noah AA2KT
blaknite@pipeline.com
------------------------------
Date: Tue, 24 May 1994 14:17:23 GMT
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!torn!newshub.ccs.yorku.ca!ists!eol.ists.ca!white@network.ucsd.edu
Subject: International Space Development Conference
To: ham-space@ucsd.edu
Dear Space Enthusiast:
I would like to take this opportunity to invite you to attend the
International Space Development Conference, the National Space Society's
13th annual conference, which will be held in Toronto from May 26 to 30,
1994 at the Regal Constellation Hotel. Attendance is anticipated at
500-1000.
This is a four day conference where space experts from industry,
governments, the general public, professional organizations, and educators
come to see and share the latest in space projects and plans. Much of the
focus of the conference is on the more speculative aspects of long term
space travel and the human "outward urge" which will propel our species to
the planets and to the stars. Apollo astronaut Buzz Aldrin; Roland Dore,
President of the Canadian Space Agency; Bob MacDonald, host of CBC's Quirks
and Quarkrs, as well as Canadian astronauts Ken Money, Mike McKay, and
Chris Hatfield are keynote speakers.
ISDC94 features talks on space medicine, education, and technology, an art
show, a special Kids Conference, Internet Friday, and Rocket Workshops.
Registration is $90 USA/ $110 CDN at the door; the student and senior rate
is $30US/ 35 CDN.
The day pass rate is 1/3 door rate.
ISDC hotel rates are: $ 87 CDN/ 67 US for a single or double room, and
$97.00 CDN for triple/quad occupancy.
Hotel reservations can be made by calling: (416) 675-1500 or toll free at
1-800-268-4838.
For further information on ISDC94, you can contact one of the organizers
listed below:
Paul Swift (416) 695-3343 pswift@caisu.ists.ca
Christine Marton (416) 699-0591 marton5@vrg.utoronto.ca
Wayne Sincarsin (416) 889-0327
Chris Coggon (416) 665-5413 coggon@ists.ists.ca
Christine Marton
Micronet
marton5@vrg.utoronto.ca
tel: 416-978-1638
------------------------------
Date: 24 May 94 15:24:30 GMT
From: news-mail-gateway@ucsd.edu
Subject: LUSAT-1 (LO-19): Actual status
To: ham-space@ucsd.edu
Official LUSAT-1 Status Report
The satellite LUSAT-1 seems healthy. The software load was intentionally
stopped when the second module was just loaded and turned on.
The next step will be to continue with the satellite's deep tests.
The satellite is sending telemetry on 437.125 MHz and it's digipeater is turned
on.
Overseas stations: If you capture any LUSAT-1 telemetry and send it in raw-mode
to the satellite control station, you'll receive a certificate for your
collaboration. These telemetry reports can be sent either via packet radio to
LU8DYF@LU8DYF.BA.ARG.SOAM and LU8DYF@ANY-ACTIVE-SATELLITE, or via Internet to:
lu8dyf@asarin.org.ar
If you intend to use the satellite, please remember that the BBS is NOT LOADED
and it will NOT be operational for the next 3 weeks (approx.).
We want to thanks LU8DYF and all the other stations that helped in the LUSAT-1
recovery: LU1DBC, LU1EXC, LU1FYZ, LU2BDT, LU2FHE, LU3AGY, LU4AGC, LU4FIO,
LU6DYD, LU7ABF, LU7AKC, LU7DSU, LU7XAC, LU8ENU and LW1EEO.
73's de Eduardo Sweet, LU7AKC (LUSAT-1 recovery team)
packet: lu7akc@lu7akc.#col.cf.arg.soam
e-mail: lu7akc@asarin.org.ar
------------------------------
Date: 24 May 1994 04:42:42 -0400
From: ihnp4.ucsd.edu!swrinde!gatech!usenet.ufl.edu!usenet.cis.ufl.edu!anshar.shadow.net!anshar.shadow.net!nobody@network.ucsd.edu
Subject: Skinny Dip
To: ham-space@ucsd.edu
Ü╪╪╪╪╪Ü ╪╪ Ü╪╪ ╠╪╪╦ Ü╪╪╪╪╪Ü Ü╪╪╪╪╪Ü ╪╪ ╪╪ ╪╪╪╪╪╪Ü ╠╪╪╦ ╪╪╪╪╪╪Ü
╪╪ÜÜÜÜ ╪╪Ü╪╪ß ╪╪ ╪╪ ╪╪ ╪╪ ╪╪ ╪╪Ü Ü╪╪ ╪╪ ╪╪ ╪╪ ╪╪ÜÜÜ╪╪
ßßßß╪╪ ╪╪ß╪╪Ü ╪╪ ╪╪ ╪╪ ╪╪ ╪╪ ß╪╪╪ß ╪╪ ╪╪ ╪╪ ╪╪ßßßß
ß╪╪╪╪╪ß ╪╪ ß╪╪ ╠╪╪╦ ╪╪ ╪╪ ╪╪ ╪╪ ╠╪╦ ╪╪╪╪╪╪ß ╠╪╪╦ ╪╪
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------------------------------
End of Ham-Space Digest V94 #134
******************************