Hello,
That is an interesting question.
I saw sometime ago on PJ2T´s website (http://www.pj2t.org/)
some information about the height that
the antenna should be to be more efficient
regarding the density of probability of the
angle of the incoming signals of DX stations
versus different antennas height and models.
On that text they - somehow - broke a myth that the
signals from NA to PJ2 come with
higher angles! - They instead of that come with low angles!
Well, i dont know how they measure and get
informations about that - the density of probability of the
angle from incoming signals from a determined path
in that case from PJ2 to NA.
73 Renner
PY7RP
--- Em seg, 11/8/08, Peter Voelpel <df3kv at t-online.de> escreveu:
De: Peter Voelpel <df3kv at t-online.de>
Assunto: Re: [CQ-Contest] Angle of received signal QUERY
Para: CQ-Contest at contesting.com
Data: Segunda-feira, 11 de Agosto de 2008, 15:41
Hi Tony,
It all will depend on the height of yor planned antennas.
As long they will not produce useful low angle radiation below 6° those 5.8°
degrees will do no harm anyway.
Best is to simulate it with HFTA, for some dx distances you really need very
low angles.
In some directions my horizon is blocked at 4-5°, except on 10m none of my
antennas radiates that low with their main lobe, but there I still have a
bit of gain at 2° and get through to dx worse then other stations behind
those hills.
On 2m and higher those directions are really poor to work.
73
Peter
-----Original Message-----
From: cq-contest-bounces at contesting.com
[mailto:cq-contest-bounces at contesting.com] On Behalf Of Tony Rogozinski
Sent: Montag, 11. August 2008 18:45
To: cq-contest at contesting.com
Subject: [CQ-Contest] Angle of received signal QUERY
I am trying to determine what would be the lowest angle from which one could
expect to receive DX signals? It seems that at one time I read 5 degrees
but I've done some research and can't find the answer so far.
I am looking at a QTH here in Colombia that in one important direction has a
hill about 330' higher than would be my antenna. That hill is 1KM or
3,250'
away from the antenna.
Using right triangle calculations the angle between my antenna and the top
of the hill would be about 5.8 degrees. I'm concerned that the hill would
have some affect on
long haul signal reception. Should I be concerned???? Otherwise the
location is
fabulous.
Tony W4OI/HK7AR
Tony Rogozinski
Amateur Radio W4OI - W4AMR - HK1AR
LICENSED FOR OVER 51 YEARS
EX-N7BG, K5LMJ, K4KES, WA6BOU,
W6JPC W7HZF, F7BK, VP5AR, VQ9AR,
OJ0/N7BG, CN2BG, 5V7BG, TY5AR
9G5AR, TU/N7BG, ZC4BG, HK3KAV
HK0/HK1AR, and others.....
I've been to 103 DXCC Countries
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