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Old February 10th 11, 02:22 PM posted to rec.radio.shortwave
RHF RHF is offline
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First recorded activity by RadioBanter: Jun 2006
Posts: 8,652
Default WHY ? Does The SWL "Sloper" Antenna Have A 'Down-Wire' ?

On Feb 9, 7:58*pm, RHF wrote:
On Feb 6, 3:15*pm, dave wrote:



On 02/06/2011 03:04 PM, RHF wrote:


On Feb 6, 9:10 am, *wrote:
On Feb 6, 2:32 am, *wrote:
.


- Otherwise, I would have put the whole thing up high,
- or possibly sloped with the unun end down.


- - Better would be to have the Feed-in-Line running
- - 4"~6" below the Ground directly under the Wire
- - Antenna Element all the way out to the UnUn and
- - Ground Rod; with the Antenna Element Sloping-Up
- - back over the 'lay' of the Feed-in-Line.
- -
- - ~ RHF


- Why is the alignment important?


BpnJ : ? Alignment = Lay-Out = By-Design !


Many Types and Configurations of "Sloper" Antennas
http://groups.google.com/group/rec.r...7a96ab218b8103


NOTE : The "Sloper" Antenna normally needs a better
more consistent Earthen Ground under it than an
Elevated Horizontal "Flat" Wire Antenna.
* The "Sloper" Antenna is more of a 'Ground Reflective'
Aerial
* * The Elevated Horizontal "Flat" Wire Antenna is more
of a 'Free Space' Aerial. {Higher Up and Away from the
Earth 'Ground'}
* .


The sloper's a vertical and needs a bottom half. Grounds work better 6
feet in the air than 6 inches below the earth.


- - All antennas are dipoles.

Dave you did not address the Question :
WHY ? Does The SWL "Sloper" Antenna Have A 'Down-Wire' ?

Dave : ? Care to Comment ?