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From: "flo flo" <hellozerohellozero@hotmail.com>
To: rsgb_lf_group@blacksheep.org
Date: Fri, 30 May 2003 13:01:05 -0800
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Message-ID: <Law15-F101M8aHSpRPS00065f37@hotmail.com>
Subject: Re: LF: Re. Top loadoing-to short or not to short?
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Laurie thanks for yours - the tower Rohm 45 is connected to the bottom of 
the coil with mulitple thick copper straps - the earth mat is for 160m and 
consists of 110 x >40m earth radials (1.5mm job lot!) plus multiple 4mm 
copper to 8 x  6 foot copper/steel rods plus and underneath is chicken wire 
covering 300 x 100 ft area.....connection to the well housing also...it 
takes 9 seconds for a dropped object to produce a plop at the bottom of the 
well...someone with a slide rule figure how deep it is? 9.81 m/sec/sec....! 
Still its going to be very interesting (when/if) how much current flows in 
the tower....the tower and vertical 8mm2 are separated by 5 metres at the 
moment. Id like it to be further but the forest precludes this. The ground 
is clay/sand and is the result of alluvial deposits from the last ice age.

Mike W2AG (thanks Mike) has pointed out that my part 5 137Khz pending 
application has been assigned "WD2XDW" - but this doesnt indicate any form 
of approval and is a normal part of the process.

Ill do some tests when I get to see what and if I actually do get some 
changes with the ends/middle of the top cap when opened/shorted.. I 
completely agree with your max new ground covering  thoughts - as you can 
see (or not see) from the web site photos Im covering a fair bit and will 
extend another wire back behind the tower too. Im getting close to having a 
very small coil.... Its moose calvung season so Im playing canny out there 
at the moment.

If my thoughts are correct we should see far better receive signal results 
from here this winter. Given the improvements from the that fateful day in 
Feb - we may be suprised what I can/see hear. Getting the array away from 
the ground has improved my local s/n...time will tell - I just hope the 
Company doesnt export me elsewhere before the sun dips

Laurence Kl1X

>Hi Laurence,
>I did not reply earlier on this subject since you were gettig very good
>advice from others.
>However there are one or two points that I should like to make which may
>prove helpfull.
>I agree that shorting the ends will not make any difference to the
>performance of the ant. but it might reduce possible corona !
>I also agree that the vert wire should be a single wire but it ought to be
>as vertical as possible to keep its capacity to earth at a minimum. I 
>notice
>that the tower is quite close(although you have moved the vert wire further
>away ) I think that the tower should be grounded to the very effectively to
>the bottom of the loading coil ie any capacitive current should be returned
>through a low loss connection to the Tx. If this is done there will be no
>losses associated with the tower(or not too many ). Finally I don't know
>much about your ground there but my experience is that on poor ground like
>mine you should get as much wire in the air as possible " This wire does'nt
>need to be in a straight line mine zig zags between trees but I always try
>to cover "new" ground and recently discovered that it should be clear 
>ground
>ie no bushes etc.
>Hope this all helps and look foreward to seeing a signal from KL.
>73 Laurie.
>
>

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