[TowerTalk] Carolina Winsome and vertical radiator question

[Patrick Greenlee]

No insult intended, Bill, I just want to mention something important and 
if you don't know it could bite you.  Of the two baluns, the upper one 
between your approximate 90 ft wire and your approximate 180 ft wire, 
has to be one that does not eliminate common mode currents flowing on 
the outside surface of the 22 ft coax.  OOPS, your 21 ft coax (mine is 
22ft.)

That common mode current provides the radiation needed from that 
vertical 21 feet of coax.  I cant quote mfg and part number but you do 
want to use the correct type balun.  Baluns that prohibit/attenuate 
common mode current on the outer surface of the coax are terrific for 
their intended purpose and I use them but NOT between the unequal legs 
of a Carolina Windom.  The vertical 21 feet of coax is a part of the 
antenna  N O T  part of the feedline.  The feed point is at the lower of 
the two baluns.

Usually my OCF dipole does about as good as my Hy-Gain Hy-Tower for 10% 
of the cost or less except on 10M where my tuner can't make a go of it.

Good luck, Bill, hope to hear you on that OCF dipole.

Patrick    NJ5G


On 1/23/2015 11:33 PM, Bill Bennett wrote:
> I have noticed that the CW160 and CW80 have the same 21 foot vertical
> radiator between baling and choke.  Why 21 feet?
>
> Reason I ask is I am trying to roll my own CW160. I noticed that Radio
> Works uses RG58 with foam dielectric and I would like to use RG8. Do I need
> to account for velocity factor difference?
> Thanks
> Bill Bennett K4IBC
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