[600MRG] Short Radial Observation

[Mel Farrer]

One comes to mind on my installation,, It is a TEE very high and big.  I am fortunate to have about 1000 feet of horse corral fencing,  That is three or four rail 6 foot high galvanized steel pipe fencing all tied to ground.  The match vs the model says I am within 85% of max perfect ground.  Don't forget what you have instead of putting in more radials, hi.....
Mel, K6KBE

      From: Neil Klagge <w0yse at msn.com>
 To: Dave Riley <dave.riley3 at verizon.net>; "600mrg at mailman.qth.net" <600mrg at mailman.qth.net> 
 Sent: Wednesday, August 29, 2018 3:49 PM
 Subject: Re: [600MRG] Short Radial Observation
   
 Dave, I wish I had the real-estate to put up a nice sized TX loop. But, alas, I am relegated to a small city lot, so my vertical will have to be my radiator.
Sent from Neil's iPad.... From: Dave Riley <dave.riley3 at verizon.net>
Sent: Wednesday, August 29, 2018 09:07
To: Neil Klagge; 600mrg at mailman.qth.net
Subject: Re: [600MRG] Short Radial Observation  Still lossy no matter what, loops outperform on this band, especially when coupled to hv lines, wink wink..No grounds, no rods, way less losses... Gain in some cases... Raising latest version of LOOP wire this week...  Storm is over, tree stumps are gone... Think of RG6  junk CATV coax as #4 solid wire, or so, way lower loss, TPO much less for 20W of eirp......Parallel a pair of junk RG6s, pretty soon not much TPO needed... Your mileage may vary...
DaveR, 1A



On 8/29/2018 11:35 AM, Neil Klagge wrote:

Andy, my experience has been similar to Ben’s.

Sent from Neil's iPhone
On Aug 29, 2018, at 08:24, Ben Gelb <ben at gelbnet.com> wrote:


Hi Andy -
I'd take 350 feet. I have maybe 8 radials of 20-30 ft each.
Did you do a measurement w/ no radials at all?
My experience was that the first radial (and/or attachment to house ground) makes a significant difference (maybe 20 ohms), and its diminishing returns after that (maybe an ohm or two of feedpoint Z change).
On Tue, Aug 28, 2018 at 7:09 PM, Andy - KU4XR via 600MRG<600mrg at mailman.qth.net> wrote:

Greetings all:

To start - 350 feet of radial wire is miniscule on 630 meters .. for a few days since getting my new antenna up,
I have been experimenting with some short radials underneath the antenna.. I tried running from the ground rod
out 50 feet - across 5 feet - and back to the ground rod - then repeat, until that wire ran out.. I ended up with
10 wires - extending 50 feet - covering 45 feet of earth - directly underneath the top loading.. Noticed NO change
in any antenna parameter.. Next I am simply running 3 wires - each about 115 feet long from my ground rod,
thru my back yard, the ends are about 20 feet apart - so covering about 40 feet of earth.. Still NO Change ..
The wire is small guage Aluminum Electric fence wire ( just to add to the record ) .. I have done this same
experiment - placing the wires in various locations, and the same result everytime - NO Change in any
antenna parameter... not a milliamp of RF current, or a " point " of VSWR change.. Seeing there is no change
appearing in any placement; is it a reasonable assumption that this small amount of " wire on the ground "
serves no useful purpose to the antenna system ??

Thanks, and 73:

Andy - KU4XR
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