Propagation Prediction

Wed Oct 9 02:00:48 EDT 1996

I have updated my Java based contest optimized propagation
prediction program so that it now can give you polar maps.
You can select rectangular (the default) north pole, south
pole, or centered at any other point polar projections.  these
are all overlayed with propagation, sun rise/set, and great
circle paths.  an interesting way to visualize greylines.

check out:
http://www.berkshire.net/~robbins/mofjava/mofjava.html

-- 
ky1h at berkshire.net   or   robbins at berkshire.net
http://www.berkshire.net/~robbins/ky1h.html

>From millersg at dmapub.dma.org (Steve Miller)  Wed Oct  9 05:36:21 1996
From: millersg at dmapub.dma.org (Steve Miller) (Steve Miller)
Date: Wed, 9 Oct 1996 00:36:21 -0400 (EDT)
Subject: Grounding parasitic elements on KT34XA
Message-ID: <m0vAqNZ-000295C at dmapub.dma.org>

NO9Z:
> >   Now that I have my KT34XA on the ground for the 3rd time, I was thinking
> > of grounding the center of the parasitic elemnts to the boom.  The books
> > say there will not be any change in performance.  I was wondering about
> > static build up.   Anyone have any experience or comments regarding
> > grounding or not grounding the reflector and the directors?  
> > Thanks    73  Lynn     NO9Z
> 
W3LPL:
> I'd advise against it, or at least recommend that you document the VSWR
> bandwidth and F/B performance of the antenna before and after your
> proposed modification to be sure that no unintended degradation has
> occurred!
<snip>
> I'd don't want to discourage you from trying your idea - but to encourage
> you to do so with due attention to detail.

Lynn,

Some commercial devices for antenna static dissipation are connected 
through a series resistor. You might try connecting the elements to the boom 
through a resistor of a few kilo-ohms or more. This would allow a static
discharge path but should not cause any serious antenna degradation since 
the elements centers are at a low impedance point and the connection 
through the resistor presents a much higher impedance.

73,

Steve

-- 
Steve Miller  WD8IXE
millersg at dma.org
http://www.dma.org/~millersg

>From zs6cax at lia.co.za (K Tahara, Japan Embassy)  Wed Oct  9 08:25:22 1996
From: zs6cax at lia.co.za (K Tahara, Japan Embassy) (K Tahara, Japan Embassy)
Date: Wed, 9 Oct 1996 09:25:22 +0200
Subject: Swaziland is covered
Message-ID: <199610090701.JAA11853 at lia.infolink.co.za>

Hello guys.

In the mail [cq-contest 19404] WJ2O wrote:

>The other group is 3DA0NX which includes a couple of JA's and DL's.
>QSL direct to:
>  Koji Tahara, JM1CAX, ZS6CAX
>  Japan Embassy
>  P.O. Box 11434
>  Brooklyn 0011
>  South Africa

I will be operating as SINGLE OP ALL BAND HIGH POWER.  
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This operation will be the part of team contesting registered as the "Team
Nippon".  6Y5XX, FG5BG, V85HG and JH7PKU will be the partners - all JA ops.

For QSLs, if it's via bureau send it to JM1CAX but no direct to my JA address.

Just for a correction, thanks.

---------------------------------------------------------
de ZS6CAX/3DA0NX     ex JM1CAX/KG7WW
Koji Tahara zs6cax at lia.co.za
---------------------------------------------------------

>From je1cka at dumpty.nal.go.jp (Takao KUMAGAI)  Wed Oct  9 08:36:54 1996
From: je1cka at dumpty.nal.go.jp (Takao KUMAGAI) (Takao KUMAGAI)
Date: Wed, 9 Oct 1996 16:36:54 +0900
Subject: JIDX 96 HFCW claimed score
Message-ID: <199610090736.QAA26581 at dumpty.nal.go.jp>

JIDX High Band CW contest(held in April '96) claimed score(CS) 
is now available by the info-server.

If you participate in the contest and submit the log to the 
committee, please check the CS.

How to get the CS, send an email to;
jidx-info at dumpty.nal.go.jp

with the following command in body of the message;
#get jidx96hfcw.hcs

Regards
	 ---------
	JIDX contest committee chairman
	Tack Kumagai JE1CKA/KH0AM
	Internet: je1cka at nal.go.jp
	TEL:81-30-066-6408, FAX:81-423-93-4449
	P O Box 22, Mitaka, Tokyo 181, Japan

>From kt4ld at juno.com (Andrew H Lewis)  Wed Oct  9 01:56:15 1996
From: kt4ld at juno.com (Andrew H Lewis) (Andrew H Lewis)
Date: Tue, 08 Oct 1996 20:56:15 EDT
Subject: CQWW
Message-ID: <19961008.180952.8191.8.KT4LD at juno.com>

Are there any stations planning to operate CQWW from NORTH CAROLINA. I
live Chapel Hill, NC and was wondering who would be operating. I just
turned 16 years old and hope to have a good score this year. Good luck to
everyone.

                                                                 73,
                                                                KT4LD

>From twoeow at internetforce.com (I2EOW)  Wed Oct  9 10:50:09 1996
From: twoeow at internetforce.com (I2EOW) (I2EOW)
Date: Wed, 9 Oct 1996 10:50:09 +0100
Subject: CQWW-RTTY DECLARED SCORE DE IG9/I2EOW
Message-ID: <199610090950.KAA04723 at users.internetforce.com>

Call used: IG9/I2EOW
Location:

Entry Class: Multi Op, Single Xmit

Band    QSOs   Pts   QTH    DX  Zones
80       179   528    14    49    11
40       397  1161    29    64    20
20       646  1904    45    82    27
15       380  1088    18    73    23
10        15    38     0    13     7
--------------------------------------
Total   1617  4719   106   281    88

Score: 2241525
--------------------------------------
Power Output: 300

Operators I2EOW IK2CFH IK2NCJ IK2MPV IK2OYD

Club Participation: MARCONI CONTEST CLUB (MCC)

A lot of problems during this contest.
The brake of the HAM IV did not work and the KT34XA went around with the wind.
For more the 80 vertical did not work the first night and the 40 delta loop went
to swr 5 the last 2 ours of the contest!!Hanyhow a lot of fun!
Erminio I2EOW

>From silver at ax.apc.org (Carlos Augusto S. Pereira)  Wed Oct  9 14:48:35 1996
From: silver at ax.apc.org (Carlos Augusto S. Pereira) (Carlos Augusto S. Pereira)
Date: Wed, 9 Oct 1996 11:48:35 -0200
Subject: DX-A Twin Sloper
Message-ID: <199610091348.LAA19830 at ax.ibase.br>

Dear friends contesters,

In order to cover the 80 meters phone band I have just ordered a DX-A Sloper, manufactured by Alpha Delta. I have a feeling that this antenna is not "terrific" but at least I have enough room on my roof for it and besides I will have 160 also.

I have already asked about the DX-A performance for a friend but perhaps there are newcomers to this reflector who can give me some additional information.
I will mount this antenna on the top of a 25 foot mast (over the roof).

I don't intend to win any contest but at least I wish to increase my low band score during the upcoming contests.

If you have this antenna, please let me know also how the SWR set up is done. How about the performance? Is it noisy like most verticals (like my HF2V)? I intend to install the 55ft leg like an inverted V, with some slope. Does it work better in a down-lead configuration?

I am primarily interested on 80/SSB as mentioned above.

73's and see you in the CQWW,

Carlos - PY1CAS

ps. My current low band station includes a TS850 + HF2V + AL80B. 
ps2. Please people, bear in mind that I live in a very small city lot (75 ft x 60 ft). Pratically no garden and actually no backyard and a very bad roof to work.

>From jmwright at juno.com (Joseph M Wright)  Wed Oct  9 18:25:09 1996
From: jmwright at juno.com (Joseph M Wright) (Joseph M Wright)
Date: Wed, 9 Oct 1996 09:25:09 PST
Subject: Contest forms
Message-ID: <19961009.092515.5007.1.jmwright at juno.com>

This is my first year as a ham and I enjoyed the CQP this weekend.  I'd
like to participate in the ARRL Sweepstakes.  Where can I get log and
dupe sheets?  I send mail to ARRL but keep getting automated responses
which don't help me.

Also, I missed the September issue of CQ (out here in the Minnesota
outback, no one sells it!).  Where can I get rules and forms for CQ WW?

You can e-mail me direct at jmwright at juno.com 

Thanks for the help.

Joe  KB0UPC

>From PGENTRY at sbbs.net (PGENTRY)  Wed Oct  9 15:20:42 1996
From: PGENTRY at sbbs.net (PGENTRY) (PGENTRY)
Date: Wed, 9 Oct 1996 09:20:42 -0500
Subject: ARRL Plaques
Message-ID: <0000389A.3115 at sbbs.net>

     Just curious:

     WE9V received our plaque for our effort in DX SSB from FS5PL.  It was 
     a Multi-2.  Chad tells me the plaque looks good and all, but there are 
     no operators listed on it.  I found that to be kind of odd being that 
     it was a multi-op, which takes more than one operator in most cases.  
     I am told that this is SOP by the league.  Is it me, or does this seem 
     like it oughta be changed?  Has anyone ever gotten a plaque from the 
     league that has the calls listed on it...  whatever the contest is?  I 
     have never won any wood before, so I don't know.

     Please reply direct.....   will post summary if wanted

     Paul  WX9E
     PGentry at sbbs.net