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  Topic: Far field - when do equations other than 2 D^2/lambda apply?
G8WRB

Replies: 2
Views: 10292

PostForum: Questions Related to Antenna Theory   Posted: Fri Dec 02, 2011 9:39 am   Subject: Far field - when do equations other than 2 D^2/lambda apply?
The usual formula for computing the distance to the far-field of an antenna is 2 D^2 / lambda, but I've seen several references to occasions when this does not apply.

Are there exceptions if the a ...
  Topic: Impedance of coax for balun
G8WRB

Replies: 0
Views: 8467

PostForum: Questions Related to Antenna Theory   Posted: Wed Oct 26, 2011 1:29 pm   Subject: Impedance of coax for balun
I'm looking at trying to match a folded dipole (Zo = 4 * 73 Ohms = 292 Ohms) using a 4:1 balun consisting of a length of coax which is electrical a half wave. The balun should give me an unbalanced si ...
 
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