[Antennas] 248ft dipole

George, W5YR [email protected]
Sun, 21 Apr 2002 08:10:26 -0500


John, if any antenna "works" - which means that you can hear and work
stations with it - then don't worry about trying to classify it or worry
about efficiency. If that configuration is what you are limited to for
various reasons, then make the most of what it will do and have fun.

Radiation from the feedline  - BTW, how do you *know* that the feedline is
radiating? - may be the main element of your antenna performance. The
feedline may be the antenna and the rest of the wire may just be
top-loading it after a fashion.

My advice is to enjoy what you can do with the antenna and be thinking
about other possibilities.

73/72/oo, George W5YR - the Yellow Rose of Texas         
Fairview, TX 30 mi NE of Dallas in Collin county EM13qe   
Amateur Radio W5YR, in the 56th year and it just keeps getting better!
QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771 I-LINK 11735
Icom IC-756PRO #02121  Kachina 505 DSP  #91900556  Icom IC-765 #02437


n3drk wrote:
> 
> I dont know exactly what one would call this antenna but i have a 248ft
> dipole which is about 20ft of the ground at the feedpoint and the ends are
> 60 ft high. In addition to this, the angle of the ends is 90 degrees apart.
> So you name what  i have here. It is fed with 300 ohm tv twinlead. I tune it
> with a roller inductor tuner and use it on 160-10 meters.
> 
> I have heard that the feedline should and/or should not radiate. The length
> of the present feedline is around 60 ft and it does radiate. So what is it?
> Should or should not? How do i know the antenna is efficient? And the april
> issue of Qst talked about horizontal loop antennas which got me to thinking
> that maybe this is the way to go instead of this present antenna system.
> 
> Your comments would be appreciated. Thanks in advance and please post to the
> reflector along with personal emails.