[TowerTalk] Antenna Modelling vs. Actual

[charlieo@tellabs.com]

Greetings,

I have a question for those who have first modelled and then built their 
antenna:

  How was the correlation between the modelled feedpoint Z and the actual?
  
I ask this question because I am nearing completion of the mechanical 
construction phase of a homebrew shortened (44') 40m rotatable dipole.  I 
modelled the antenna in MiniNec (v3, I think) mainly to get an idea of the 
feedpoint Z.  Now I need to build the matching network, and it sure would be 
nice to know how much room for adjustment I need to have.

For those interested, the modelled feedpoint Z is around 20 -j340 ohms.

The idea is to get the antenna up on the tower and tuned with a minimum amount 
of hassle (lowering, raising, etc.)  I understand that a bit of "cut and try" 
will be necessary, but am hoping to keep it minimized.

Tnx es 73,

Charlie  N9CO	charlieo@tellabs.com

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