[Elecraft] Antenna Question

[Don Wilhelm]

Charles and all,

What you say is true when only the radiating part of the antenna is
considered - but the true Zepp antenna is a system 'thing' and consists of
both the radiating portion and the 1/4 wave feedline.  Ham usage has
construed the label "Zepp" to be most any end fed antenna a half wave long,
and that is not always a true Zepp antenna.

I know it is only semantics - but I feel that in the instance that initiated
this thread, it is important - even if I don't usually agree with Kurt.

73,
Don Wilhelm  - Wake Forest, NC   W3FPR home page: http://www.qsl.net/w3fpr/
  QRP-L # 485   K2  SN 0020   mailto: w3fpr@arrl.net

*** Life is what happens when you're making other plans -- Mike Cross  ***

----- Original Message -----
>
> An end fed 1/2 Zepp antenna on 40 will be full wave end fed antenna on 20,
> a 3/2 end fed antenna on 15 and a 2 wave length end fed antenna on 10. All
> can be fed in a similar manner.  You don't need a specific length of feed
> line for an end fed zepp but if you use a multiple of 1/2 wave length, the
> high voltage current node will be in the shack.  If you are using a
> transmatch with a balun, the high voltage will be bad for the balun and it
> could destroy it.  My experience on baluns is that they will work up to an
> impedance of 500-700 ohms or so, but the impedance of the current node is
> several thousand ohms.
>
>