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From: Bob Raide <rjraide@hotmail.com>
To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
Date: Wed, 25 Sep 2013 15:13:05 -0400
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Subject: RE: LF: TA CW?
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Stefan=3B
The voltage is terrible!  I can draw a 2.5 inch flame off the ant input.  I=
 am cramped for space to the west as I am only 20 feet from the neighbors l=
ine.  I am on 4 acre lot and room in all but that one direction.  More top =
loading would be great but also use this ant for 80 and 160 meters.=20
I have seen the 700' Loran C tower up close and it uses the three top guys =
as top loading.  It used to wipe out all but the 500 kHz band here.  I coul=
d use 185 and did for awhile because 137 had terrible splatter from that si=
gnal.
You can go to google maps and get a real good shot of this place.  Last I l=
ooked the tower shows up and house with cars in driveway even.  If not I ca=
n take couple pix for you.  coordinates "NL 42-40-05 =3B WL 77-04-28" =20
You are probably using a much bigger ant than what I have here.  A couple h=
undred footer would sure help for 137/73-Bob
=20
Date: Wed=2C 25 Sep 2013 15:21:20 +0200
From: Stefan.Schaefer@iup.uni-heidelberg.de
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: TA CW?

=0A=
=0A=
=0A=
  =0A=
=0A=
=0A=
Hi Bob=2C=20
=0A=

=0A=
Am 25.09.2013 03:01=2C schrieb Bob Raide:=0A=
=0A=
  =0A=
  [...]But only have a 90' high tower and at the top is=0A=
the center feed point of my 75 meter double extended zepp.  I simply=0A=
short the open wire line which runs almost vertically and fed it with=0A=
allot of inductance in series! I assume the two 150' legs acts as top=0A=
loading. Ground system is from my broadcast experience where for field=0A=
intensity surveys 36" wide chicken wire was used with a 100' tower most=0A=
often and a 250 transmitter.  Eight 50' chicken wire radials produced=0A=
decent field on the midband channels [1000 kHz or so] to measure from. =0A=
Here I am using several 150' radials of chicken wire radials.  I hope=0A=
to stretch some out to 300' but that's going to be about it at my=0A=
location.=20
=0A=
  =0A=
=0A=

=0A=
Can you post a link to some photos showing the tower and environment ?=20
=0A=

=0A=
Do you use deep earth rods additionally to the wire radials? Can you=0A=
add even more capacitive load to the top of the tower=2C giving an=0A=
umbrella antenna. 600 pF=2C as Alan sais=2C is nice but not much on 73 kHz=
=0A=
and you seem to be voltage limited now (like me=2C sometimes :-) ).=20
=0A=
Some images would be interesting for us i think.
=0A=

=0A=
73=2C Stefan/DK7FC
 		 	   		  =

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<body class=3D'hmmessage'><div dir=3D'ltr'>Stefan=3B<BR>The voltage is terr=
ible!&nbsp=3B I can draw a 2.5 inch flame off the ant input.&nbsp=3B I am c=
ramped for space to the west as I am only 20 feet from the neighbors line.&=
nbsp=3B&nbsp=3BI am on 4 acre lot and room in all but that one direction.&n=
bsp=3B More top loading would be great but also use this ant for 80 and 160=
 meters.&nbsp=3B<BR>I have seen the 700' Loran C tower up close and it uses=
 the three top guys as top loading.&nbsp=3B It used to wipe out all but the=
 500 kHz band here.&nbsp=3B I could use&nbsp=3B185 and did for awhile becau=
se 137 had terrible splatter from that signal.<BR>You can go to google maps=
&nbsp=3Band get a real good shot of this place.&nbsp=3B Last I looked the t=
ower shows up and house with cars in driveway even.&nbsp=3B If not I can ta=
ke couple pix for you.&nbsp=3B coordinates "NL 42-40-05 =3B WL 77-04-28"&nb=
sp=3B <BR>You are probably using a much bigger ant than what I have here.&n=
bsp=3B A couple hundred footer would sure help for 137/73-Bob<br>&nbsp=3B<B=
R><div><hr id=3D"stopSpelling">Date: Wed=2C 25 Sep 2013 15:21:20 +0200<br>F=
rom: Stefan.Schaefer@iup.uni-heidelberg.de<br>To: rsgb_lf_group@blacksheep.=
org<br>Subject: Re: LF: TA CW?<br><br>=0A=
=0A=
=0A=
  =0A=
=0A=
=0A=
Hi Bob=2C <br>=0A=
<br>=0A=
Am 25.09.2013 03:01=2C schrieb Bob Raide:=0A=
<blockquote cite=3D"mid:BLU180-W5184AE36F6E704B0DE2E29AC2F0@phx.gbl">=0A=
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}=0A=
=0A=
--></style>=0A=
  <div dir=3D"ltr">[...]But only have a 90' high tower and at the top is=0A=
the center feed point of my 75 meter double extended zepp.&nbsp=3B I simply=
=0A=
short the open wire line which runs almost vertically&nbsp=3Band fed it wit=
h=0A=
allot of inductance in series!&nbsp=3BI assume the two 150' legs acts as to=
p=0A=
loading.&nbsp=3BGround system is from my broadcast experience where for fie=
ld=0A=
intensity surveys 36" wide&nbsp=3Bchicken wire was used with a 100' tower m=
ost=0A=
often and a 250 transmitter.&nbsp=3B&nbsp=3BEight 50' chicken wire radials =
produced=0A=
decent&nbsp=3Bfield on the midband channels [1000 kHz or so] to measure fro=
m.&nbsp=3B=0A=
Here I am using several 150' radials of chicken wire radials.&nbsp=3B I hop=
e=0A=
to stretch some out to 300' but that's going to be about it at my=0A=
location. <br>=0A=
  </div>=0A=
</blockquote>=0A=
<br>=0A=
Can you post a link to some photos showing the tower and environment ? <br>=
=0A=
<br>=0A=
Do you use deep earth rods additionally to the wire radials? Can you=0A=
add even more capacitive load to the top of the tower=2C giving an=0A=
umbrella antenna. 600 pF=2C as Alan sais=2C is nice but not much on 73 kHz=
=0A=
and you seem to be voltage limited now (like me=2C sometimes :-) ). <br>=0A=
Some images would be interesting for us i think.<br>=0A=
<br>=0A=
73=2C Stefan/DK7FC<br></div> 		 	   		  </div></body>
</html>=

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