FW: Re: [Antennas] G5RV

[PaulKB8N at aol.com]

In a message dated 3/11/2005 2:48:21 P.M. Central Standard Time,  
kz5v at hotmail.com writes:

Larry   et al,

Don't   be  naive, the coax length does matter !  Just think  length
matters !!!!    and you will never go  wrong.

In  a perfect antenna in free  space, maybe length is not an issue,
but I have not seen one  of them yet.

KZ5V



If an antenna is properly designed and is the proper length, it  should 
present 50 ohms of resistive load at the feed  point.  Otherwise, the only reason 
that coax length should matter  is because the coax is picking up common mode 
currents which will indeed vary  with the length of the coax.  This can be 
prevented by using a 1:1 balun,  which can be achieved by coiling a number of 
turns at the feed point, or by  using a commercially available balun.
 
Paul, K5AF