Towertalk
[Top] [All Lists]

Re: [TowerTalk] Re: One more ground radial question

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Re: One more ground radial question
From: Jan Erik Holm <sm2ekm@telia.com>
Date: Thu, 18 Dec 2003 17:09:04 +0100
List-post: <mailto:towertalk@contesting.com>
You need no helicopter. In practical sense just
measure the ground wave.
We are not trying to confirm loobes in the vertcal
plane, then you need helicopters.

73 Jim SM2EKM
---------------------

Jim Lux wrote:

Hard to do, in a practical sense... You'd need a measurement receiver in an
airplane, helicopter, balloon etc, because the field strength at "ground
level" isn't really what you're interested.

Perhaps measuring beacons before and after?  But you've got the propagation
variations to worry about.

This is why evaluating HF antennas is such a royal pain.

----- Original Message -----
From: "Jan Erik Holm" <sm2ekm@telia.com>
To: <towertalk@contesting.com>
Sent: Wednesday, December 17, 2003 8:37 PM
Subject: [TowerTalk] Re: One more ground radial question



Is something like this ever confirmed by field
strenght measurements?

73 Jim SM2EKM
--------------------------------------------------

Don Havlicek wrote:

Yes!
In my case ... 60 radials spaced 6 degrees apart .. then concentrations
of ten radials at 1 degree each for Europe, Japan, South America, and
VK/ZL ... works like gangbusters .. all I need now is to clean out the
shack and put a new feedline out to the vertical again!
Don
N8DE

va3pl@cuic.ca wrote:


----- Original Message ----- From: "Don Havlicek" <n8de@thepoint.net>
To: <kb9cry@comcast.net>
Cc: <TowerTalk@contesting.com>
Sent: Wednesday, December 17, 2003 12:12 PM
Subject: Re: [TowerTalk] One more ground radial question




I believe the word "optimum" should be replaced with "sufficient".
My experience with verticals tells me that 100 radials works much
better than 60, especially when concentrated in certain directions.

,


_______________________________________________


See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless

Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.

_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk





_______________________________________________

See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.

_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>