You will not need just the equipment and the test range, the adjustable
distant tower or building to reach into the center of main lobe is important
as well, especially for measurements on horizontal antennas.
The wooden measurement towers of Deutsche Telekom for that purpose are 54m
high.
http://de.wikipedia.org/wiki/Br%C3%BCck
73
Peter
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Rob Atkinson
Sent: Sonntag, 15. Mai 2011 14:44
To: Diane & Edward Swynar
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Vertical with 1 radia
Modeling is a useful tool but no substitute for field strength
measurements with test range equipment.
73
Rob
K5UJ
On Fri, May 13, 2011 at 9:32 AM, Diane & Edward Swynar
<deswynar@xplornet.ca> wrote:
> On 13th May, Rob wrote:
>
> "...Further, in my opinion, too much reliance is placed on modeling
however
> the author did attempt field strength measurements (but in a flawed
way)..."
>
>
****************************************************************************
> *******************
>
> Hi Rob et al,
>
> IMHO, ALL of the antenna articles in QST---and everywhere else, for that
> matter---rely far too much upon modeling these days.
>
> We've become a generation of "...armchair antenna experts", I fear. So
what
> if EZNEC says the antenna is NFG on paper...? Back in the 60's Bill Orr
> referenced a piece about a popular aerial for 40-meters they used on the
> west coast called the "33 Up 33 Out"---essentially a 1/4-wave vertical
with
> one radial. I tried one on 7-MHz with my 75-watt Johnson Ranger-1
> transmitter back in the day, & had a blast working all sorts of new-found
DX
> there...
>
> Sometimes EZNEC et al remind me of a gaggle of scientific experts running
> amok in an open meadow, chasing-down bumblebees so that they might be told
> that, according to the laws of physics, they are not supposed to be able
to
> fly...
>
> If it feels good, do it---and damn the torpedoes!
>
> ~73~ de Eddy VE3CUI - VE3XZ
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|