Calling N8KDV

Calling N8KDV

Post by Maximu » Sat, 28 Feb 2004 08:06:32

If I shot a wire up over the highest limb of the fir tree in my yard, and
connected the ends to make a loop out of it and ran the lead from the loop
to the house via the insulator in the tree trunk, would that be a good SW
listening antenna - would it have any directionality (just one loop but
100' or so long) ? THANKS

Strength and Honor

 
 
 

Calling N8KDV

Post by N8KD » Sat, 28 Feb 2004 08:08:23



> If I shot a wire up over the highest limb of the fir tree in my yard, and
> connected the ends to make a loop out of it and ran the lead from the loop
> to the house via the insulator in the tree trunk, would that be a good SW
> listening antenna - would it have any directionality (just one loop but
> 100' or so long) ? THANKS

You gonna feed it with coax or just a single wire? Give it a try at any rate
and see how it works.
Quote:

> Strength and Honor

 
 
 

Calling N8KDV

Post by Diverd47 » Sat, 28 Feb 2004 09:18:36

Probably work OK..
Be a great Lightning rod too ...



>If I shot a wire up over the highest limb of the fir tree in my yard, and
>connected the ends to make a loop out of it and ran the lead from the loop
>to the house via the insulator in the tree trunk, would that be a good SW
>listening antenna - would it have any directionality (just one loop but
>100' or so long) ? THANKS

>Strength and Honor

 
 
 

Calling N8KDV

Post by RH » Sat, 28 Feb 2004 13:54:47

MAXIMUS,

Sounds like you would have the Wire Antenna Element going from
the Insulator up the Tree to the Limb and back down the Tree to
the Insulator. Then from the Insulator via the Feed-in-Line to
the Radio in the House.  Yes you have a Loop but it is so
narrow and thin that it effectively a Vertical Antenna and thus
basically an Omni-Directional Antenna.  You could use 300 Ohm
Twin Lead or Coax Cable with a Balun; plus a Ground Rod and
Wire at the base of the Tree.

NOTE:  Using a 'thin' 'narrow' Vertical Loop Antenna like this
can help reduce the Man Made Noise that a vertical antenna is
more susceptible to picking up.  

You may wish to read:
"Above-the-Fence Field SWL Antenna for a Field Radio"
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/message/417
The basic Antenna design used for this Field Antenna can be
adapted to many individual situations including your Vertical
"Up-and-Down" the Tree Loop Antenna.

iane ~ RHF
.
Some Say: On A Clear Day You Can See Forever.
http://groups.yahoo.com/group/Shortwave-SWL-Antenna/message/502
I BELIEVE: On A Clear Night...
You Can Hear Forever and beyond the Beyond !
.
.

If I shot a wire up over the highest limb of the fir tree in
my yard, and connected the ends to make a loop out of it and
ran the lead from the loop to the house via the insulator in
the tree trunk, would that be a good SW listening antenna -
would it have any directionality (just one loop but 100' or
so long) ?

THANKS
Strength and Honor

.