Morning guys!
Just talked with SW and I have the following correction to my writings:
It was was not the attenuation of signals from back that SW measured, but it was
the antenna FORWARD GAIN. The auxiliary antenna was in front of the antenna
used for reception. For each new rod he put into ground he got 1 dB gain and
SNR in reception and this continued up to 6 rods- So he got a total gain of 5
dB and that is pretty much- almost doubled gain and that is of course by
getting better directivity. That is pretty cool actually. More than 6 rods
didn´t increase the gain any more. SW has not tested the from back attenuation.
Attenuation of signals from back I will test this fall in Siuntion as I have
great possibilities for that. That is very interesting. I have only sand there
but I will see if I can get NA-bentonite to get a better ground for the
resistor termination. I will report what I´ll find out in due time.
So stay tuned......
73'
RS alias "The Craw"
----- Original Message -----
From: Roland Sandberg
To: [email protected] ; Aaltonen Antti ; Hannu Asikainen ; Hannu Niileksela
; Hannu Tikkanen ; Havukunnas Jarmo ; Hytönen Jyrki ; Håkan Sundman ;
[email protected] ; Jim Solatie ; Kainulainen Yrjö ; Kalmi Tapio ;
Karimies Martti ; Kilponen Ari ; Korhonen Jari ; Mäkeläinen Mika ; Nyman Jopi ;
Patala Jarmo ; Reiniluoto Timo ; Rinkinen Vesa-Jussi ; Salmi Jarmo ; Sinisalo
Jari ; Suokas Jussi ; Tuomo Ahonen ; Äyräs Pertti
Cc: Stefan Wikander ; 'Bjarne Mjelde' ; [email protected] ;
'Odd-Jorgen Sagdahl'
Sent: Wednesday, September 07, 2011 1:10 PM
Subject: Pre-version of hopefully coming article
Howdy.
I have for some time been putting together my thoughts about important
technical stuff in DX-ing and here is the preliminary version of my attempt.
If you have comments-whatever, completely disagree with me or want more
detailed info about something- don´t hesitate to contact.
The grounding formula is very interesting and I´m glad I bounched into it.
When this article is finalized I thought I would put it into Radiomaailma.
This is written in EE because I want our Scandinavian friends to be able to
read it. And frankly- I prefare to write stuff like this in EE.
There is much elementary and not much figures. I don´t fancy figures- except
when there's women involved. It´s not my strongest area so I try to stay away
from writing stuped things.
But if you have the time- read it and throw a comment if you feel for it...
73´
RS alias "The Craw"
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Tilaa WRTH 2011 nyt:
http://www.hard-core-dx.com/redirect2.php?id=wrth2011
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