V31DX V31DX V31DX V31DX V31DX V31DX V31DX
The Cuba Libre Contest Club is at it again. After a nice long chat with Bob,
KK6EK, who is managing the upcoming Easter Island project we decided that many
of his ideas regarding the integration of ham radio and the Net have
considerable merit...so we will shamelessly appropriate some of them for the
upcomming CQWW SSB Contest. We will have a high bandwidth Web site set up
prior to the contest. Bill, WA9L, the original Cuba Libre Contest Club
member, is supplying the site within his www.calsoft.com domain (check out his
site, his Web browser is serious stuff!). Peter, VE3SUN/W6, author of QRATE
and inventor of the Magic Notch filter, another Cuba Libre Contester, is
authoring the site. As we set up our station in Belize we'll upload pictures
of our location on the beach at Ambergris Caye, Belize. Might even include a
few babe shots for KA9FOX! During the contest we will upload our raw log
hourly to the Web site so you can check our progress and marvel at our Q rate
and guffaw at our lack of multipliers!
Last year we were seventh WW in points (just missed the box, shoot) but third
WW in Qs in the CQWW (Multi-Single). For the last three years we have been
top NA score and second WW in the ARRL SSB (yeah, I know, it's not a REAL DX
contest.) So we can run up a fair number of Qs.
We will also include a QSL request server at the site. Just Cut and Paste
your log entry into the server and we'll send you a card. We have many
thousands already and don't really want yours. Our QSL manager does accept
donations so feel free to send green stamps.
We will post our URL and more details as we work them out.
Does this constitute some sort of backdoor approach to spotting? I think not.
Could you check or logs for DX that we worked in the last hour to chase
yourself? Yeah, but the DX probably called us! What we are attempting to do
is combine some of the exitement of Contesting and the global nature of the
Web (call it computer DX) and add something to the technique and fine art of
DX contesting. Automation of the QSL process is a start.
Your ideas?
Regards to all,
John N6YRU, Bill WA9L, Peter VE3SUN, and Vic KI6IM, the Cuba Libre Contest
Club
V31DX V31DX V31DX V31DX V31DX V31DX V31DX
>From pduff@wizards.austin.ibm.com (Phill Duff) Wed Aug 30 20:02:27 1995
From: pduff@wizards.austin.ibm.com (Phill Duff) (Phill Duff)
Subject: K6STI's Low Noise Loops
Message-ID: <9508301802.AA12198@wizards.austin.ibm.com>
Given past reflector discussions about the use of the EWE antenna,
beverages, etc. for contest and DX'ing usage, I'm surprised at the lack
of discussion regarding K6STI's Low Noise Loop articles in the
latest QST.
Several stations in the Central Texas area are planning the
construction of these loops and I'm wondering what the thoughts of
any others might be with regards to K6STI's design.
Has anyone else built one? Benefits/results?
73 de Phil NA4M
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Phil Duff NA4M (512) 838-3579
IBM AIX/6000 Austin, Texas Internet: pduff@wizards.austin.ibm.com
~~~~~~~~~~~~~~~~~~~~~~ My opinion, not IBM's~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>From lvn@fox.cen.com (Larry Novak) Wed Aug 30 19:46:52 1995
From: lvn@fox.cen.com (Larry Novak) (Larry Novak)
Subject: Antenna Question(s)
Message-ID: <9508301846.AA09898@cen.com>
>
> present setup. I'd really appreciate help from you modelling gurus, but I'll
> consider SWAGs also. Thanks in advance.
>
Well, I'm not a modelling guru, but I have looked at loops. My
conclusion, at least for a 40 meter loop at heights lower than about
50-60 feet, is that you're better off with a dipole. The
generally-held idea that a loop has 1-2 dB gain over a dipole is
really 1-2 dB gain over a dipole at "the effective height" of the
loop. It is not true if they are both at the same height. e.g.,
---------- -------- --------
\ / |
\ / |
\ / |
\ / |
\/ |
This loop is not as good at the dipole, but
----------
\ /
\ / -------- --------- <<- effective ht. of loop
\ / |
\ / |
\/ |
This loop is better than the dipole. Howver, if you can get the loop
up that high, you'd have to be really wierd to put the dipole lower.
There may be some cases, however, where you don't have the space for a
dipole, but you do have space for the loop.
In spite of what I see in the modelling, many people think loops do
better than dipoles. I've never had one, so I can't say.
--
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| Larry Novak \-\-\ email: lnovak@cen.com |
| Century Computing | Tel: (301) 953-3330 |
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>From R. Torsten Clay" <torsten@mephisto.physics.uiuc.edu Wed Aug 30 20:22:14
>1995
From: R. Torsten Clay" <torsten@mephisto.physics.uiuc.edu (R. Torsten Clay)
Subject: Antenna Question(s)
Message-ID: <199508301922.AA06029@mephisto.physics.uiuc.edu>
Being mostly a wire antenna person, I've thought a lot about the loop/
dipole choice. My current choice is to go with the dipole, the reason being
that I use it on multiple bands (a 95 foot flat-top dipole up 65 ft), 80-10m.
With the dipole, the pattern is fairly predictable; however, with the loop,
unless the feedpoint is moved for different bands, or the loop opened up on
some bands, the pattern can get pretty funky with weird high-angle stuff.
However, for single-band 80m, I think a rectangular loop would be much
better for low-angle performance (there's one for 160m modeled in Low Band
DXing). For 40m, 65 ft is high enough that horizontal wires begin to perform
ok.
95'
_____________________ ________________
| | |
| | |
| 65' X |
| | |
| | |
----------------
80m angle:
~straight up 30 deg
Tor
n4ogw@uiuc.edu
>From n4zr@ix.netcom.com (Pete Smith) Wed Aug 30 20:54:33 1995
From: n4zr@ix.netcom.com (Pete Smith) (Pete Smith)
Subject: YTAD.ZIP
Message-ID: <199508301954.MAA04849@ix9.ix.netcom.com>
Earlier, I told the reflector of my skepticism about YTAD results for my
QTH. While my question resulted in Dean's finding and fixing a small bug in
the software, in fact I was misinterpreting the graphical results I was
seeing. If the model is precisely describing reality, the entire pattern is
shifting upward slightly because of my gradually sloping foreground. It
does have a disproportionate effect on the very low elevation angle where
the notch appears, because of that shift, not because of the depth of the
notch per se, which is what I found intuitively unlikely.
Thanks, Dean!
73, Pete Smith N4ZR
n4zr@ix.netcom.com
WEST Virginia
|