[Antennas] Length of Dipole

Fri, 23 Apr 2004 08:19:43 -0400

Jim,

You should consider an OCF antenna.  I use one from the Antenna 
Handbook.  It is fed with RG8x, with a large Radio Works 4:1 balun at the 
45' 90' joint, which is supported at 35'.  The antenna has less than a 2:1 
SWR over the entire 80, 40, 20 and most of the 10 meter band without a 
tuner.  It is useable on the other bands with a tuner.  I have some 
portable OCF antennas, a couple of which use 300 ohm ladder line, with  4:1 
balun on the ground and coax to the rig if  you want to use 300 ohm ladder 
line.

At 05:56 PM 4/20/2004, Jim Corbitt wrote:
>Question for the group....I am erecting a dipole which I plan to use for 
>multi-band HF operations.  The dipole will be fed with 300 ohm 
>ladderline.  A 1:1 choke balun will provide for the transition between the 
>unbalanced output of my rig to the balanced feedline.   I can make the 
>dipole any length between 120' up to 150'.  Is there an optimum or "best" 
>length which makes the most sense??  Appreciate any thoughts or 
>opinions.  Jim N4XWA
>
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