>
I agree fully. From my temporary hilltop location, Eu opens here in Kansas
an hour
earlier than from my home 3 miles and 400 ft lower away. I have had KL7
reply to my
call with "Didn't know the band was open there yet". Sat a year ago
listening to a
Korean call CQ on an open frequency on 15 with no takers for at least 10
minutes in a
major contest, answered by first call. A bit later he was overwhelmed as
the band
opened more. My guess is that when angles of radiation match the
propagation things
really happen. In a contest there are just more stations finding those
multiple
anomalies.
N0UU
>
> A possibly related phenomenon:
> These are relatively weak signals that appear as the only signals on the
> band when the bands are closed or closing. In many cases these signals are
> from quite modest stations, frequently using ground plane antennas.
> My interpretation is that these stations have some significant very low
> angle radiation which gets through under these conditions. When the band
> opens up a little the stations with beams at good height are much stronger.
> I was stuck with modest elevated ground plane type antennas on hf for years
> and had the impression that they were quite good when bands were marginal
> but a bit pathetic when the bands were open.
> Comments?
> 73
>
> end
> Barry Kirkwood PhD ZL1DD
> Signal Hill Homestay
> 66 Cory Road
> Palm Beach
> Waiheke Island 1240
> NEW ZEALAND
> www.waiheke.co.nz/signal.htm
> - ----- Original Message -----
> From: Larry N7DF <n7df@netmdc.com>
> To: Contest Reflector <cq-contest@contesting.com>
> Sent: Wednesday, 04 April, 2001 3:28 PM
> Subject: [CQ-Contest] ionospheric absorption not heating
>
> >
> >
> > The real factor in the anomalous change in signal strength between =
> > qrp/qro signals is attributable to a threshold level of absorption in =
> > the ionosphere. When the level of ionization drops below a certain =
> > level, a signal must exceed the absorption potential before it will be =
> > refracted and intercepted by ground based stations. This is easily =
> > noticeable during band opening and closing periods where stations with =
> > exceptionally tight beam signals break through with loud signals while =
> > the majority of stations are not even heard.
> > N7DF
> > Larry
> >
> >
> > --
> > CQ-Contest on WWW: http://lists.contesting.com/_cq-contest/
> > Administrative requests: cq-contest-REQUEST@contesting.com
> >
> >
>
> ------------------------------
>
> From: K3BU@aol.com
> Subject: Re: [CQ-Contest] Ionospheric heating
>
> In a message dated 4/3/2001 18:01:52 Eastern Daylight Time,
> w8ji@contesting.com writes:
>
> >
> > > You can always try it, and see for yourself, get on with some DX
right
> > > after the contest, and see how long signals last at the certain
level,
> > > and when they start dropping rapidly. Do the same test at other, non
> > > contest days, at the same time, with similar propagation and see what
> > > signals levels you will experience and if you get the same phenomena.
> > > Just try to add up all contest stations with perpetual CQing,
multiply
> > > by number of (Italian :-) watts and see how much energy you will come
> > > up with. You might be amazed. Then you tell us if it only happens on
> > > April 1st.
> > >
> > > If you need more proof and info check
> > > http://server5550.itd.nrl.navy.mil/projects/haarp/
> >
> > I was going to respond with a nice article about using my stacked
push-pull
> > Razor beams to generate my own propagation, but then I looked at the
date.
> >
> > Since this not the first, I assume you are serious. If you are
serious, you
> > are wrong.
> >
>
> Here we go again, people reading, what was not written, must be them liberal
> educational institutions :-)
>
> Did I say anything about Razors? Have you read carefully the first
sentence?
> Have you tried the described experiment?
>
> I am not talking about ME heating the "ionosphere" (maybe just a very
> little), but the multitude of kilokilowats during the contests. I am not the
> first or only one who noticed the "conditioning" of frequencies during the
> contests.
>
> Sheesh, if it wasn't written up by Dr. Soandso nor proclaimed by Mr.
Rauch it
> can't be so? Maybe there are people who know something you don't know
yet Tom
> :-)
> Looks like fourth egg in the face coming up?
>
> You are so good with dBs and math and antennas. Here is the question.
> What would be the real life, on the band (10m) difference between these two
> antennas:
>
> 1. 4-square, bases at .5 m above salty ground, quarter wave radiators, each
> having one 1/4 wave elevated radial going out on diagonal, sloping down to
> abt 20 cm at the ground. Using Comtek hybrid phasing unit, beaming Europe.
>
> 2. 3 el. cubical quad on .4 wave boom, square configuration, boom half wave
> up, also over salty ground, no baluns, dual polarization (3 dB loss?) also
> beaming Europe.
>
> They are both presenting 50 ohm impedance and are fed with the same
> rig/power. What would be the difference between those two antennas to
> receiving stations in Europe? What does the modeling software and books say?
> What is the reality, which antenna is better?
>
> BTW have you checked W4RNL studies on quads, dual log feeds? Not exactly
> "folklore" Eh? And he didn't get to the benefit of combining Yagi and Quad
> elements in the array yet. Have you changed your opinion on that stuff yet?
>
> Tom, you picking on wrong guy, I have not "learned" this stuff from the
books
> and software, I have experienced it. You can too, it is repeatable. Try it
> you might like it and learn something too.
>
> 73 Yuri, K3BU
>
> ------------------------------
>
> From: "W1UK" <w1uk@earthlink.net>
> Subject: Re: [CQ-Contest] Help - determine distance between to points
>
> This works pretty well:
>
> http://www.nau.edu/~cvm/latlongdist.html
>
> 73 -- Jim W1UK
>
> - ----- Original Message -----
> From: <K7bv@aol.com>
> To: <cq-contest@contesting.com>
> Sent: Wednesday, April 04, 2001 10:42 AM
> Subject: [CQ-Contest] Help - determine distance between to points
>
> >
> > Contesting Computer Whizzos,
> >
> > Can your point me to some software or a website that will allow me to
pick
> > two long/lat points on the globe and determine the distance between them
> in
> > miles or km?
> >
> > Tks,
> > Forever computer challenged
> > Dennis K7BV
> >
> >
> > --
> > CQ-Contest on WWW: http://lists.contesting.com/_cq-contest/
> > Administrative requests: cq-contest-REQUEST@contesting.com
> >
> >
>
> ------------------------------
>
> From: "Scott/Lori Jasper NE9U/KA9ZGD" <jasper@powercom.net>
> Subject: [CQ-Contest] commodore <> Dos ??
>
> Does anyone know of a way to import some old contest logs (mid-80's) from
> commodore 64 format into a DOS based log program?
> Is this somehow possible?
>
> Thanks!
>
> Scott NE9U
>
> jasper@powercom.net
> Amateur Radio NE9U/KA9ZGD/KB9TTO/TBA
> Scott/Lori/Alex/Arielle/Jasper
>
> ------------------------------
>
> From: "William N. Goodman, CPA \(K3ANS\)" <goodmancpa@enter.net>
> Subject: Re: [CQ-Contest] Help - determine distance between to points
>
> DX4WIN does it within its logging program. Bill, K3ANS>>
>
> ------------------------------
>
> From: K7bv@aol.com
> Subject: [CQ-Contest] Websites for Determining Distances + Currancy
Exchange Rate
>
> Websites for Determining Distances + Currancy Exchange Rate; things every
> contest DXpeditioner would like to know. Thanks to the guys list below, I
> have the following to share with you.
>
> 73 Dennis K7BV
>
> http://www.nau.edu/~cvm/latlongdist.html Thanks to W1UK, Jim
> Plug in the coordinates of the two points and it calcs the milege
>
> http://www.indo.com/distance/ Thanks to Bruce Ferry
> Plug in the coordinates of the two points and it calcs the milege.
> Also has an international currancy calculator
>
> ------------------------------
>
> End of CQ Contest Digest V4 #113
> ********************************
>
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