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1994-11-13
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Date: Tue, 23 Aug 94 04:30:32 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 #234
To: Ham-Space
Ham-Space Digest Tue, 23 Aug 94 Volume 94 : Issue 234
Today's Topics:
Northeast Space Development Conference
Portable EME Station -- Questions
UoSAT-3
Yaesu 2 Meter All-Mode for Sale
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, 22 Aug 1994 21:54:52 GMT
From: ihnp4.ucsd.edu!swrinde!howland.reston.ans.net!europa.eng.gtefsd.com!uhog.mit.edu!news.kei.com!ub!freenet.buffalo.edu!ai181@network.ucsd.edu
Subject: Northeast Space Development Conference
To: ham-space@ucsd.edu
YOU ARE INVITED TO THE PREMIER SPACE CONFERENCE EVENT
IN THE NORTHEAST FOR FALL 1994!
The Northeast Space Development Conference is scheduled for
Saturday, September 24, 1994. It will be held on the campus
of Rensselaer Polytechnic Institute (RPI) in Troy, New York.
The Rensselaer Space Society is sponsoring the use of campus
facilities and meeting amphitheaters. Seating for up to 300
persons is available for conference sessions and exhibits
will be setup in an adjacent, public access display hall.
Propulsion hardware, literature and other items of interest
will be shown including displays covering high power and
experimental rocketry. Other sponsors of the conference are
the National Space Society and its Northeast Chapters, the
International Space University, ETM/Solar Works and Space
Delivery Systems.
The theme of this conference will be:
"PROGRESS IN COMMERCIAL SPACE DEVELOPMENT"
The Northeast Space Development Conference's primary goal is
to offer a meeting place for people from aerospace companies,
universities, organizations, government agencies and other
individuals who either contribute, participate or otherwise
support Commercial Space Development in the Northeast region
and across the United States and Canada. We hope to do our
part in the Northeast to assure the continued growth of the
Commercial Space Industry by offering a highly visible,
technical and business level forum to try and focus more
regional and national media attention on commercial space
endeavors. We feel it is critical to encourage new
commercial space ventures and partnerships. This unique
conference will hopefully spawn new business and academic
relationships, and provide information on the opportunities
for cooperation between established and newer space
businesses.
We are looking forward to having you become a regular
participant in the Northeast Space Development Conference.
-------------------------------------------------------------
NORTHEAST SPACE DEVELOPMENT CONFERENCE - NSDC '94
Darrin Communications Center, Rensselaer Polytechnic Institute, Troy,NY
PROGRAM, SPEAKERS, TIMES (VER. 1.2)
September 24, 1994
REGISTRATION - (8:00am-9:00am)
Continental Breakfast - Display Hall/Lounge Area (until 8:50am)
INTRODUCTION - (8:55am-9:00am)
Conference Chair - Chris Welty
KEYNOTE ADDRESS - (9:00am-9:30am)
PROGRESS IN COMMERCIAL SPACE DEVELOPMENT
Keynote Speaker - Robert Walker, Rep. - PA *
SESSION I - (9:30am-10:30am)
TECHNOLOGY ACCESS & PAYLOAD PROTECTION
- Al Halstead, Introductions
NASA's Technology Reinvestment Program
- Glenn Wright, NASA OACT/CTC *
Satellite & Launch Insurance Update
- Jeffrey S. Cassidy, US Aviation Underwriters
SESSION II - (11:00am-12:00pm)
SMALL LAUNCH VEHICLES & NEW LAUNCH OPTIONS
- Dean Oberg, Introductions
Hot Topics: Launch Vehicle Options (LLV, SS-25, Orbex)
- Peter Diamandis, CTA, Inc.
Space Access by Conversion: New Solid Propellant Launchers
- Robert Davis, E'Prime Aerospace Corp. *
LUNCHEON - (12:30pm-1:30pm) (Chris Welty - Introductions)
Luncheon Talk - PROGRESS IN SPACE BUSINESS EDUCATION
Luncheon Speaker - Robert Richards, International Space University
SESSION III - (2:00pm-3:00pm)
EXPERIMENT CARRIERS & MICROGRAVITY RESEARCH
- Al Halstead, Introductions
Spacehab Progress: Docking Missions to MIR
- David Rossi, Spacehab, Inc.
Progress in Biotechnology & Crystal Growth Research in Space
- Wesley Hymer, PennState University
SESSION IV - (3:30pm-4:30pm)
PROPULSION SYSTEMS & SOLO SPACEFLIGHT
- Dean Oberg, Introductions
Rocket Propulsion Progress - Hybrid Technology Option Project
- Brian Hughes, AMROC, Takoma Park, MD Office *
SPACECUB: A One Passenger Sub-Orbital Rocket
- Geoffrey A. Landis, NASA Lewis Research Center
and David Burkhead, University of Akron
SESSION V - (5:00pm-6:00pm)
SUNSAT ENERGY & LUNAR COMMERCE
- Gay Canough, Introductions
Progress in Solar Power Satellites
- Seth Potter, New York University *
Commercial Lunar Rover - Advanced Robotics
- David Gump, LunaCorp, Arlington, VA
* invited
SPACE ENTREPRENEURS POST CONFERENCE DINNER
As a follow-on function a cocktail half hour and a dinner
gathering will be held at the Castaways Restaurant which is across
the street from the Super 8 Motel (close to RPI).
COCKTAILS - (6:30pm-7:00pm)
- Cash Bar & opportunity to visit and socialize with other
attendees, associates and speakers
INFORMAL "Dutch Treat" DINNER - (7:00pm-?)
- Fine food and discussion of the days events.
-------------------------------------------------------------------
NSDC '94 - REGISTRATION FORM
NAME _____________________________________________________
ADDRESS __________________________________________________
CITY _________________________ ST ___ ZIP ________________
PHONE _____ - _____ - _______________
____ Regular $85 (After 9/1, at door)
____ Advance $65 (Before 9/1, NSS, AIAA, Tripoli, NAR)
____ Student with ID $20
(Fees include Luncheon)
Make Check or MO payable to NSDC. Print and mail this form
and registration fee to:
NSDC c/o Rensselaer Space Society
RPI
Rensselaer Union, PO Box 86
Troy, NY 12180
For more info:
Call (607) 785-6499
or e-mail to canough@bingvaxa.cc.binghamton.edu
-------------------------------------------------------------------
Hotels -
Super 8 (near RPI) 800-800-8000 $48-$55/night
Holiday Inn (US 9, 8 mi. S. of Troy) 800-465-4329 $67/night
The Desmond (near Albany Airport) 800-448-3500 $119-$131/night
Marriott Inn (near Albany Airport) 800-228-9290 $129-$168/night
(Rates as of 8/19/94, NSDC not responsible for rate changes)
-------------------------------------------------------------------
--
(Dean R. Oberg)
------------------------------
Date: Mon, 22 Aug 1994 21:39:04 GMT
From: ihnp4.ucsd.edu!library.ucla.edu!csulb.edu!nic-nac.CSU.net!charnel.ecst.csuchico.edu!csusac!csus.edu!netcom.com!btoback@network.ucsd.edu
Subject: Portable EME Station -- Questions
To: ham-space@ucsd.edu
I hope that one of these will be the correct newsgroup for this
question; advice on redirection is welcome.
I'm thinking of assembling a portable EME station that I could use
for demonstrations at schools. I don't know if such a thing is
possible at any reasonable cost, or for any reasonable definition
of "portable." But here are the questions anyway:
1. I assume that because of my Arizona location, I can't use
432MHz. This seemed to be the best compromise between power
amplifier practicality and antenna size. Is 23cm a good
second choice?
2. Assuming that 23cm is a good second choice, how can I generate
the necessary power on that band? I've found one amplifier
design, in the 1975 (!) ARRL Handbook. It uses a pair of
3CX100A5 tubes and could be used for 200W continuous or
400W intermittent. Since the antenna will be compromised for
portability's sake (no 24-ft dishes), I'd like to get more
power than this. Has the state of the art improved since 1975?
If so, where can I find construction information?
3. Various publications have stated that Yagi designs have proven
unsatisfactory for EME work at 23cm, but don't say why. I can
make guesses (losses in the splitter network, etc.), but don't
know for sure. Is it in fact possible to use these for 23cm
EME work? A back-of-the-envelope calculation suggests that a
24dBi array could be quite practical, but I haven't considered
splitter network losses.
4. If a Yagi array really can't be made practical, does anyone
know of some portable dish designs -- 4m or so? The dish
doesn't have to be rugged or able to stand up to weather since
it will never see a permanent installation.
The objective is a station that can hear its own echoes -- not
necessarily with communication-capable quality -- and can
communicate with a "big gun" EME station. If my planning is going
in a completely fruitless direction for such an objective, I'd
like to know early on!
Thanks,
-- Bruce Toback
KN6MN
------------------------------
Date: Mon, 22 Aug 1994 17:31:56 GMT
From: ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!torn!nott!cunews!freenet.carleton.ca!FreeNet.Carleton.CA!ae517@network.ucsd.edu
Subject: UoSAT-3
To: ham-space@ucsd.edu
Low Earth Orbit Satellite System used in Voyage to
North Pole - US/Canada Arctic Ocean Section '94
Today, August 22nd, 1994, the USCG icebreaker POLAR SEA and the
Canadian CG icebreaker LOUIS S. ST-LAURENT, in conjunction with
the Arctic Ocean Section 1994, succeeded in reaching the geographic
north pole.
The voyage was conceived to provide support to a joint US/Canada
environmental and scientific research program in the Arctic Ocean.
The project involves over 60 scientists studying the role of the Arctic
Ocean in relation to changes in regional and global climate and
environment. The two vessels left the Chukchi Sea in late July,
through areas of the Arctic Ocean that never before had been transited
by ship due to the severe sea ice regimes found there.
A number of systems were used in providing communications support
to the Canadian icebreaker ST-LAURENT, including a 56Kbp/s
INMARSAT link. However, after moving outside of the INMARSAT
Pacific Ocean Region satellite footprint at approximately 80 degrees
latitude north, it was UoSAT 3 that provided the primary means of
transferring ice imagery files so critical to ice navigation. Radio
Amateurs will remember UoSAT 3 as UO-14 when it was operated in
the Amateur service, where this technology was largely pioneered. We
believe this to be the first shipboard application of LEO store-and-
forward communications in an operational scenario.
The Canadian Coast Guard would like to thank the Canadian Centre
for Marine Communications in St. John's Newfoundland, as well as
SatelLife of Cambridge, Mass., the Telemedicine Centre of Memorial
University of Newfoundland, and the Centre for Satellite Engineering
Research of the University of Surrey, U.K. for their support in this
program.
tnx de va3rr@amsat.org
Canadian Coast Guard
------------------------------
Date: Mon, 22 Aug 94 09:54:25 -0500
From: news2.near.net!news.delphi.com!usenet@yale.arpa
Subject: Yaesu 2 Meter All-Mode for Sale
To: ham-space@ucsd.edu
FOR SALE:
Yaesu FT-290 RII 2 Meter All-Mode Transceiver
- DTMF Microphone
- 25 Watt Amplifier
- Mobile Mounting Bracket (never installed)
This rig is in perfect condition. I purchased it for
the Spring VHF Sweeps and have used it about 6 times
since then. The receiver section and audio on this
rig are excellent, and the SSB is exceptionally sweet.
Unfortunately I must part with it for financial reasons.
The first $450 takes it away.
respond via Email to brunelli_pc@delphi.com
pete brunelli
n1qdq
------------------------------
End of Ham-Space Digest V94 #234
******************************